In a fast-paced world, speed and precision are invaluable. At GSI, our tech-driven approach ensures swift, accurate legal solutions tailored to your needs. Using cutting-edge technology, we make informed decisions, strategic moves and maintain utmost client confidentiality. From lightning-fast data analytics to AI-enhanced legal research, our tools navigate complexities with unmatched speed and clarity. Trust us to turn today's challenges into tomorrow's successes, keeping your information secure and interests protected. Discover how our blend of technology and expertise can transform your legal journey. Explore our services for seamless, confidential and efficient legal solutions.

Navigating legal complexities can be daunting, but with GSI, you're never alone. Our mission is to provide more than legal solutions, we deliver peace of mind. As your trusted partner, we handle intricate legal challenges with unmatched expertise and care. We listen, understand and act decisively to protect your interests. From complex litigation to delicate negotiations, our seasoned attorneys ensure you feel secure and confident. Discover how we transform legal uncertainty into assurance. Explore our services and experience true peace of mind with a partner dedicated to your success every step of the way.

At GSI, we specialize in legal intelligence powered by advanced AI and digital technology. Our innovative approach proactively identifies and mitigates risks, ensuring you stay ahead of potential issues. By integrating cutting-edge tools, we provide precise, efficient and comprehensive legal solutions tailored to your needs. With GSI, you benefit from a partnership that combines unparalleled legal expertise with state-of-the-art technology, protecting and empowering your business. Experience the forefront of legal intelligence and let us guide you confidently through the complexities of today's legal landscape.

Navigating legal challenges demands more than knowledge—it requires global insight and local expertise. At GSI, we combine unparalleled global experience with deep-rooted local knowledge to deliver exceptional legal services. Our expansive network spans the globe, ensuring we can handle your challenges anywhere. From international regulations to local statutes, our seasoned team leverages global insights with a local touch. Whether tackling cross-border transactions or local markets, we provide strategic solutions that are globally informed and locally perfected. Trust a partner with the reach and resources to support you anywhere. Explore our services and experience tailored global expertise.

In the relentless world of business, corporate complexity is a formidable threat that can bring down even the strongest companies. Without expert guidance, these intricacies can become overwhelming. At GSI, our seasoned attorneys shield you from these dangers, excelling in navigating intricate corporate challenges. From rigorous regulatory compliance to strategic transactions, we bring unmatched expertise to keep your business thriving. We don't just respond to issues; we anticipate and avert them. Trust us to be your steadfast partner, transforming threats into opportunities for growth. Navigate the corporate labyrinth with confidence and safeguard your business's future.

Philosophy
Overview
Philosophy
At GSI, we thrive on challenging, sophisticated and complex legal matters. We are committed to delivering tailored solutions that require deep expertise, innovative thinking and unwavering dedication. We believe in strategic foresight and execution, going beyond routine legal tasks to achieve remarkable results. Our philosophy is built on excellence, innovation and client-centricity. We understand that clients need more than legal expertise; they need a trusted partner who navigates complex legal terrain, seeks effective solutions and delivers exceptional results.We leverage cutting-edge technologies to deliver exceptional legal services while maintaining a human touch. Every client receives a personalized approach and we build relationships based on trust, understanding and a shared dedication to success. Our commitment to integrity, trust and confidentiality is paramount. We strive for long-lasting relationships built on mutual respect, open communication and achieving shared goals. Ultimately, we aim to be the leading legal partner for those seeking transformative solutions to complex legal challenges. We push the boundaries of legal innovation to empower clients to achieve their full potential.
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Vision
Mission
Values
Capabilities
Practice Areas
As a full-service attorney partnership firm, GSI practice covers a wide range of legal services and sectors.
We provide legal advice to multinational companies investing in Türkiye or doing business with Turkish companies, in addition to many large Turkish industrials, governmental bodies, banks and other financial institutions in their domestic and cross-border transactions, M&A, joint ventures and other equity investments.

Dr. Ali GÖKSU
Founding Partner
Dr. Ali Göksu, Founding Partner at GSI, is a leading figure in the Turkish legal landscape, distinguished by his exceptional experience and expertise in high-stakes transactions. With over two decades of practice, he has played a pivotal role in some of Türkiye's most significant infrastructure, energy, and financial projects. His deep understanding of legal complexities has been crucial in structuring and executing sophisticated M&A deals. Göksu’s extensive involvement in large-scale projects has provided him with profound insights into the importance of managing vast amounts of data effectively. His expertise, combined with his visionary leadership in AI and legal tech, has driven him to set new standards for integrating advanced technologies into legal practice. Passionate about taxonomies, ontologies, and data visualization, he actively explores ways to leverage these innovations to enhance efficiency, clarity, and strategic decision-making. Dr. Göksu is recognized as a transformative leader in the Turkish legal landscape, reshaping the profession through the power of emerging technologies. His practice focuses on complex project finance, restructurings, and strategic investments, ensuring that his clients' ventures are legally sound and financially robust. His academic background in banking and finance law further supports his expertise in these areas. He has successfully navigated the financing of multi-billion-euro infrastructure projects, managed legal advisory for large-scale petrochemical facilities, and overseen substantial investments in renewable energy projects. His experience extends beyond Türkiye, with projects across various countries, including Uzbekistan, Albania, Sudan, Angola, Qatar, Kenya, and Zanzibar. These projects range from multi-billion-dollar petrochemical facilities and textile cities to significant natural gas and oil pipeline ventures. Göksu’s expertise also extends to navigating legal structures and agreements involving disruptive technologies. His first-hand understanding of distrubtive technologies such as artificial intelligence, blockchain, and advanced semiconductors enables him to provide strategic legal advices to the clients that enhances commercial value, mitigates risks, and promotes innovation. Additionally, Göksu is a skilled litigator and arbitrator with a proven track record in both national and international commercial disputes and arbitration proceedings. This experience complements his corporate practice, highlighting his ability to navigate complex legal challenges and achieve favorable outcomes within a comprehensive legal framework. Furthermore, Göksu excels in crisis management, utilizing his extensive experience to understand the commercial and human dynamics of crises. This profound insight allows him to craft sophisticated strategies and solutions, effectively managing even the most challenging situations. His ability to distill complex issues and navigate intricate legal matters has earned him a national and international reputation for excellence in the field.

Mr. Hasan AKICIOĞLU
Senior Managing Partner
Hasan Akıcıoğlu, Senior Managing Partner at GSI, brings a wealth of experience and a formidable track record to the firm. With over 20 years of legal practice, Hasan has been a driving force in shaping GSI's success. He has held the role of Senior Managing Partner since the beginning of 2013, leading the firm through a period of significant growth and evolution. Before his promotion to Managing Partner, Hasan led one of GSI's corporate and energy departments. His expertise spans a wide range of legal fields, including corporate and commercial law, international commercial arbitration, energy law, privatization, media law, construction, and real estate law. This breadth of knowledge has enabled him to provide strategic guidance to clients in complex and high-stakes transactions. Hasan has a proven track record of success in representing both local and international clients in various sectors, including energy, infrastructure, and media. He has advised on major acquisitions, including an international media giant's entry into Türkiye. He has also played a key role in energy projects across multiple countries, including Kazakhstan, Georgia, Ukraine, Egypt, and Northern Iraq, demonstrating his understanding of the intricacies of cross-border transactions. Hasan's expertise extends to the negotiation and review of complex loan agreements and security packages, as well as the resolution of intricate commercial disputes. He has been involved in significant infrastructure and privatization projects, providing strategic counsel to large consortiums in multi-million dollar tenders and advising municipal entities on privatization efforts. His dedication to his clients and his deep understanding of the legal landscape have earned him a reputation for meticulous attention to detail and strategic problem-solving. Colleagues and clients alike recognize Hasan's exceptional legal skills and unwavering commitment to achieving the best possible outcomes for his clients. Under his leadership, GSI continues to excel, delivering top-tier legal services and maintaining its position as a leading law firm in the region.

Ms. Fatma Gözde KARDEŞ
Managing Partner
Fatma Gözde Kardeş is a managing partner at GSI and focuses on project development and finance, as well as banking, finance, and capital market transactions. An expert in project finance and a former academic, she represents a diverse range of parties, including project sponsors, lenders, equipment suppliers, infrastructure funds, and public sector entities. Her work spans various sectors, focusing on the financing and structuring of complex project arrangements. Ms. Kardeş is skilled in negotiating joint ventures, concessions, and other development and financing agreements. She provides comprehensive counsel on local regulations related to banking, securities, stock exchange matters, and other financial products and transactions. Her expertise extends to advising clients on legislative developments in financial markets. Gözde played a key role in the loan agreements and security packages for significant infrastructure projects across Türkiye, Europe, and the Middle East. Gözde's renowned expertise in project finance includes drafting implementation contracts, conducting corporate works, and assisting in arranging, negotiating, and closing facility and security agreements. Her work encompasses direct agreements, shareholder support agreements, and debt assumption agreements. She advises sponsors and lenders on all project-related transactions, including consultancy agreements, supply and service contracts, and subcontracting agreements. As an expert in financial law and capital markets, Gözde offers thorough legal consultancy in the incorporation, acquisition, and daily operations of banks, private equities, hedge funds, funds of funds, and other financial institutions.

Mr. Ali Sefa TÜRKMEN
Managing Partner
Ali Sefa Türkmen, a managing partner at GSI, boasts over 15 years of specialized expertise in construction law, energy and infrastructure projects, and public-private partnerships (PPPs). His profound understanding encompasses the complexities of EPC contracts, wind turbine supply and installation, and O&M contracts, further complemented by a sophisticated grasp of the finance documents that are pivotal to the successful execution of such projects. Throughout his career, Ali Sefa Türkmen has played a pivotal role in the design of project agreements, prioritizing bankability and ensuring that every legal document adheres to the stringent requirements of both financiers and project stakeholders. He actively engages in the negotiation of project agreements and finance documents, prioritizing the specific needs of each project and the critical bankability issues, ensuring that investor priorities are met without compromising the overall viability of the project. His experience extends beyond the borders of Türkiye, reaching across emerging markets in Africa, the Middle East, and Central Asia which has provided him with an unparalleled understanding of the diverse legal and regulatory landscapes that shape project execution in these regions. His approach is informed by a comprehensive understanding of the technical, financial, and regulatory complexities inherent in energy and infrastructure projects. This allows him to craft tailored legal solutions aligned with clients' strategic objectives, ensuring that every project undertaken is positioned for long-term success.

Ms. Cansev Erinç İNCEKAŞ
Partner
As an experienced corporate and commercial law expert, Cansev Erinç İncekaş provides legal consultancy services to domestic and international companies various sectors. Her extensive experience spans various sectors, including airport infrastructure, defense, service, software development, telecom, energy, aviation, IT, construction, entertainment, and education. Throughout her career, Cansev has represented a diverse clientele, including contractors, investors, service providers, employers, and shareholders, in various transactional matters. She possesses extensive experience in drafting, reviewing, negotiating, and executing a broad spectrum of commercial contracts. Cansev has played a key role in numerous M&A deals and has managed a wide array of corporate transactions across different sectors. In addition, Cansev has liaised with regulatory authorities, commercial partners, and stakeholders during the establishment of new businesses in Türkiye. In her consultancy role in corporate and commercial law, she has ensured that foreign investors comply with Turkish legal requirements, monitored legal risks, and provided expert interpretations of the legislative environment.

Mr. Fatih GÖKSU
Partner
Fatih Göksu is an accomplished legal professional specializing in project finance, banking law, capital markets, energy law, and real estate and construction law. With a robust career, he has provided strategic legal counsel across a wide range of sectors, guiding clients through complex legal frameworks. Fatih has played a pivotal role in major airport and highway projects, both domestically and internationally, under the Build-Operate-Transfer (BOT) model. His expertise spans from the tender process to financial closure, with a particular focus on Public-Private Partnership (PPP) projects, ensuring compliance with tender and finance documents and Turkish legal regulations. In the energy sector, Fatih has provided legal consultancy for several wind and solar power plants. His work includes advising on project finance, procurement, and EPC contracts, as well as representing oil companies in all contractual matters with customers and suppliers. His experience extends to construction law, where he has successfully drafted and negotiated EPC contracts for various projects, ensuring they meet industry and bankability standards. Additionally, Fatih has guided clients through corporate and M&A transactions, ensuring successful project closure. In banking and capital markets, Fatih has provided legal services for the establishment of banks in Türkiye and advised publicly traded companies on compliance with capital markets regulations, including the issuance of debt instruments. He has also represented energy and mining companies in high-value disputes, advocating for clients in court and arbitration proceedings.

Mr. İsmail Safi IŞIK
Partner
İsmail Safi Işık has unique expertise in intellectual property law and dispute resolution. İsmail has experience in drafting and negotiating various intellectual property contracts, as well as representing clients in litigation and other legal proceedings related to intellectual property law, including patents, designs and trademarks, copyrights and unfair competition. His practice also includes arbitration and dispute resolution in domain name disputes, as well as contractual and court proceedings relating to the protection of data and databases. In addition to his expertise in dispute resolution, İsmail has successfully represented clients before a number of administrative bodies, including the Turkish Patent and Trademark Office, the Ministry of Culture General Directorate of Copyright, the Ministry of Agriculture and Forestry, and the World Intellectual Property Organization. He has also managed the registration of intellectual property rights on behalf of clients before these institutions, ensuring that the relevant procedures were followed in order to protect their rights and to pursue legal action against third parties who had made unfair applications. In parallel with his work on practical matters related to intellectual property, he provides invaluable support to academic studies with his team, particularly in the areas of patents, trademarks, software, databases and artificial intelligence.

Ms. Banu MERT
Partner
Banu Mert, with over 30 years of expertise, is a distinguished legal expert specializing in labor law, with extensive knowledge and experience in corporate law, commercial law, the law of obligations, and real estate law. In the realm of labor law, Banu has deep expertise in employment matters and occupational health and safety issues, which are critical in business. She provides comprehensive day-to-day legal assistance in all aspects of labor law. Her services include preparing employment contracts, internal directives/regulations, workplace safety guidelines, advising on individual and collective dismissals, representing clients in collective bargaining negotiations with unions, and conducting periodic training for management and HR departments. Additionally, Banu has been involved in various employment-related consultancy services for her clients. She has managed the takeover of all assets and liabilities of major media outlets, facilitated transactions, and obtained necessary permissions from the Competition Authority for companies in the media and pharmaceutical sectors. Banu has also participated in conducting due diligence reports for significant acquisition and privatization cases in the energy, automotive, media, and pharmaceutical industries. Her expertise extends to providing day-to-day corporate consultancy to numerous clients. She offers legal assistance in drafting and negotiating all kinds of commercial contracts, as well as in real estate acquisition and leasing. As a highly valued legal consultant, Banu is commended for her exceptional legal support and dedication to protecting the interests of the clients in her portfolio.

Ms. Öznur ÖZHAN EKİNCİ
Partner
Öznur Özhan Ekinci is an experienced and specialized litigation lawyer offering a wide range of legal services. She specializes in various cases such as labor claims, compensation lawsuits arising from tort, commercial disputes, debt and negative declaratory actions, annulment of disposition and compensation cases, cases arising from rental relationships, and enforcement law cases. Additionally, she is specialized in cases arising from zoning law, annulment cases and full remedy actions seen in tax courts and administrative courts, and individual applications to the constitutional court. Being highly experienced in personal data protection (KVKK) law, she provides services such as identifying and analyzing companies' obligations under KVKK, auditing and regulating the compliance of companies' current operations, registering, tracking, and updating companies in VERBIS, organizing companies compliance, preparing necessary documents for companies, monitoring the complaint processes, and managing and conducting the criminal processes related to KVKK offenses. Öznur provides various legal services to his clients, such as filing lawsuits, representing in execution, investigation (proceedings) stages, participating in hearings, and applying to ordinary and extraordinary legal remedies. He works to protect the rights of his clients and ensure they obtain the best possible outcome in their cases. She has had the opportunity to develop herself by combining law and technology, working in the team that provides the legal infrastructure for the cutting-edge systems within GSI. Aiming to provide high-quality legal services, Öznur constantly monitors current legal developments and keeps his clients informed of the latest developments, aiming to provide them with the best possible service.

Ms. Mutlu ÖZTÜRK YURDAKUL
Partner
Mutlu Öztürk Yurdakul, a partner at GSI, focuses on corporate and commercial law and is actively involved in due diligence reviews, drafting and negotiating share and asset sale and purchase agreements, joint venture and shareholders' agreements and other documents related to acquisitions or foreign investments. Mutlu Öztürk Yurdakul also has extensive experience in cross-border transactions, corporate structuring and international trade transactions, engineering-procurement-construction (EPC), public-private partnerships, privatization applications, technology transfer, renewable energy and electricity generation projects. She has represented numerous foreign and local clients operating in a wide range of sectors including energy, retail, manufacturing, services, defense, healthcare, logistics, chemicals, aerospace, food and fashion. In particular, she has specialized in drafting and negotiating a wide range of contracts, including tender documents, EPC contracts, turnkey & lump sum construction contracts, unit price construction contracts, engineering contracts, EPCM contracts, maintenance and repair contracts, architecture contracts, supply contracts, and design contracts. Her expertise extends to handling FIDIC based agreements, as well as projects supported by the European Bank for Reconstruction and Development (EBRD) and the World Bank, along with their related documents. She is also skilled in the preparation and negotiation of sub-contracting, consultancy, cooperation, and joint venture contracts. In addition to her contract drafting and negotiation skills, she provides comprehensive legal contract management services and has considerable experience in addressing issues related to defective goods and services. Recently, Mutlu has led acquisition processes for several major companies. She has advised on the drafting of contracts in Türkiye's largest solar power plant project, provided legal advice on issues management in an investment project of a listed company, and helped minimize the risks arising from the contracts by conducting risk management on issues arising from the substantive contracts of the project in question. Being an expert in the field, she also negotiated, drafted and took to signature concession agreements for very large investment projects in the Middle East and Africa with counterpart government representatives.

Ms. Göksu SARI
Partner
Başak Göksu Sarı is a partner of GSI with over 15 years of experience in mergers and acquisitions (M&A), general corporate law, projects & project finance. She has extensive know-how in drafting, reviewing and analyzing all sorts of commercial contracts. She is specialized in structuring of joint ventures, representing buyers and sellers in domestic and international acquisitions, and advising clients on all forms of private equity deals. Göksu has led numerous complex cross-border M&A deals in all kinds of industries including renewable energy, mining, aviation, defense industry, construction, media, IT & telecommunications and also financial technologies. Over the years, she has regularly coordinated due diligence reviews and drafted, negotiated, and advised clients in relation to share purchase agreements, shareholders agreements, joint venture agreements and other corporate law documents. Göksu has extensive know-how and experience in corporate governance matters and shareholders disputes. On top of her M&A experience, Göksu has also played an active role in the listing of Turkish companies on foreign stock exchanges including NYSE and Nasdaq. Additionally, she has conducted applications and attended meetings with Turkish Competition Authority on several occasions in relation to structuring of joint ventures and acquisitions. Göksu has advised clients in relation to projects & projects finance as well. She is well experienced especially in renewable energy projects and has advised investors in relation to public-private partnerships and other large-scale infrastructure and superstructure projects. She has drafted, negotiated, and advised investors in relation various EPCs, construction contracts, electromechanical contracts, other FIDIC based contracts and also large-scale purchase agreements and O&M contracts. In the field of aviation, she has negotiated and worked on many aviation fuel contracts, including without limitation fuel purchase and supply contracts with worldwide prominent suppliers, IATA based aviation fuel sales contracts with fuel companies and airlines and also contracts for into plane services. Aside from her transactional experience, Göksu has also acted as the lead counsel in arbitration proceedings involving shareholders’ disputes.

Ms. Sema TAŞVEREN
Partner
Dr. Sema Taşveren’s practice focus on contract and energy law, with a primary focus on international natural gas and LNG sales, transit contracts, and renewables. She has been actively involved in the preparation and execution of numerous such contracts and has overseen their daily implementation. Throughout this work, she has led and participated in various negotiations and resolved disputes arising from these contracts. She has also played a key role in resolving disputes related to multiple corporate transactions involving international natural gas and LNG contracts, as well as those in the renewable energy sector. Dr. Taşveren possesses extensive experience in negotiating and drafting contracts, particularly concerning price revisions and adjustments of other commercial terms in energy deals. She has participated in numerous complex and high-value international arbitration proceedings, both ad hoc and institutional, concerning natural gas and energy contracts. During these proceedings, she led the team in the preparation and submission of legal and technical papers and represented her clients before the tribunals. She has also testified before the international arbitration tribunals several times as a witness, contributing to the explanation of the link between technical and commercial issues stated in the contracts related to international natural gas contracts. Additionally, she has represented her clients in proceedings to set aside arbitration awards. She is also experienced and skilled in offering her clients solution-focused recommendations for resolving disputes between parties in international sales, investment, and energy contracts.

Mr. Emre ULCAYLI
Partner
Emre Ulcaylı is rendering legal consultancy services to both multinational and local clients with specific emphasis on corporate law, commercial law, foreign direct investment law, capital markets law, banking law, competition law, intellectual property law and media law. He has led large-scale and intricate M&A projects in various sectors, including FMCG, retail apparel, textiles, automotive, tourism, media, broadcasting and entertainment, publishing, energy, aviation, shipping, port logistics, insurance, real estate, education, health care, logistics, chemicals and pharmaceuticals, IT and telecommunication and capital markets. He has provided legal consultancy services to prominent infrastructure and superstructure project companies in Türkiye and Middle East region addressing their daily corporate concerns, contract negotiations and contract management. As part of his M&A practice, he has led numerous data room preparations and conducted legal due diligence studies regarding corporate matters, material contracts, intellectual property, environmental and regulatory issues. He has actively participated in competition filings of cross-border M&A transactions. He has offered legal expertise concerning Turkish law aspects related to the listing of Turkish companies on foreign stock exchanges including NYSE and Nasdaq. He has also played a pivotal role in ICSID and ICC arbitration proceedings.

Mr. Ahmet YILMAZ
Partner
Ahmet Yılmaz is a seasoned legal professional with a proven track record in corporate and commercial law, construction law, energy law, and real estate law. He possesses a particular focus on real estate and construction projects, demonstrating expertise in navigating complex legal landscapes and achieving optimal outcomes for clients. Ahmet has represented both multinational and local clients in all stages of project deals in various sectors including automotive, tourism, energy, aviation, real estate, logistics, chemicals. His expertise encompasses all stages of projects, including notable BOT deals. Notably, he played a crucial role in one of Türkiye’s largest airport BOT projects, managing legal relations with public authorities, overseeing crisis management and participating in overall legal strategy development. In addition to his specialization in real estate and construction law, Ahmet provides comprehensive legal consultancy for companies’ day-to-day operations. He is skilled in identifying and mitigating legal risks within the corporate environment, and excels in negotiating, drafting, and reviewing contracts and legal documents. He also represents clients in judicial proceedings.

Ms. Nur Sezgi ALTIOKKA
Managing Senior Associate
Ms. Altıokka is an experienced Turkish lawyer specializing in labor law, rental law, foreigners law (immigration and citizenship), and real estate law. She provides comprehensive legal counsel to both local and international clients, offering practical solutions across a wide range of legal matters. Her expertise includes drafting and negotiating contracts—particularly employment agreements and lease contracts—and delivering preventative legal strategies to address potential disputes in the employer–employee relationship. As a trusted immigration and citizenship lawyer in Turkey, she guides foreign nationals through residence and work permit applications, as well as the complex process of acquiring Turkish citizenship. Ms. Altıokka also advises on real estate and construction law, helping clients manage the legal risks associated with subcontractors and on-site workers in large-scale projects. Additionally, she represents major players in the technology and media industries, handling all legal aspects of hiring and retaining foreign employees, including residence and work permits. With a client-focused approach and in-depth knowledge of Turkish law, Ms. Altıokka ensures businesses and individuals receive continuous, reliable, and results-oriented legal support.

Mr. Ahmet Tayyib ERENOĞLU
Partner
Ahmet Tayyib Erenoğlu offers comprehensive legal consultancy services to a wide range of domestic and foreign clients at GSI. He specializes in Arbitration Law and has a solid background in Commercial Law and Energy Law. Ahmet has extensive experience in managing both project and contract management processes for clients and adeptly resolves disputes that arise. He navigates intricate transactions and challenges in both pre-and post-arbitration processes. His strategic approach and thorough understanding of arbitration processes have made him a key player in resolving complex disputes. Ahmet began his professional path at GSI, focusing on corporate and M&A before directing his efforts towards arbitration. He handles cases stemming from energy, real estate and construction contracts, both within Türkiye and internationally. His expertise in Arbitration Law, supported by his background in Commercial and Energy Law, is backed by considerable knowledge and experience, making him a valuable asset to his clients and the firm.

Mr. Beratcan ÖZDEMİR
Managing Senior Associate
Mr. Özdemir is a Managing Senior Associate with extensive experience advising multinational corporations, institutional investors, investment funds, and public sector bodies on complex cross-border transactions and international disputes. His practice focuses on structuring, executing, and financing large-scale projects in the energy, infrastructure, and construction sectors, with a particular emphasis on Public-Private Partnership (PPP) and privatization initiatives. He regularly guides clients through every stage of high-value project development, from structuring and regulatory strategy to implementation and financing. In the investment management space, Mr. Özdemir advises across the full lifecycle of private equity and venture capital funds, including fund structuring and formation, negotiation of core legal documentation, and subsequent investment activities such as mergers, acquisitions, and equity financing rounds. His experience also extends to capital markets transactions, where he advises on initial public offerings (IPOs) and related regulatory matters in Türkiye. Beyond his transactional practice, Mr. Özdemir represents clients in international arbitration proceedings, developing strategic approaches to resolve complex, high-value commercial disputes. He also provides ongoing counsel on corporate governance, foreign investment, and international structuring, ensuring clients operate with efficiency and compliance in multiple jurisdictions.

Mr. Tolgahan GÖRMÜŞ
Partner
Tolgahan Görmüş is an experienced litigation attorney who provides a wide range of legal services. He specializes in various cases such as labor claims, compensation claims arising from torts, debt and negative determination lawsuits, annulment of disposition and reasonable compensation lawsuits, lawsuits arising from lease relationships, and lawsuits arising from enforcement law. He is also specialized in cases arising from zoning law, annulment lawsuits and full remedy actions heard in tax courts and administrative courts. In addition, he provides services in the field of criminal law, including crimes against persons and property, crimes committed through mass media such as social media and the internet, lawsuits arising from the violation of personality rights through the internet, criminal and legal lawsuits falling within the scope of the press law, and reputation management. Tolgahan provides various legal services to his clients, such as filing lawsuits, representing in execution, investigation (proceedings) stages, participating in hearings, and applying to ordinary and extraordinary legal remedies. He works to protect the rights of his clients and ensure they obtain the best possible outcome in their cases. Aiming to provide high-quality legal services, Tolgahan constantly monitors current legal developments and keeps his clients informed of the latest developments, aiming to provide them with the best possible service.

Mr. Onat UZALDI
Managing Senior Associate
Onat Uzaldı provides comprehensive legal services to his clients, primarily on corporate law, commercial law, construction law, energy law and projects & project finance. He has been acting for private organizations in domestic and international projects, including PPPs, infrastructure, transportation (roads, railways and airports), energy projects including renewable energy, oil, gas, and mining. He has served his clients across a broad spectrum of projects, playing pivotal roles in various industries. His legal assistance has been particularly valuable to contractors in the construction industry, where he has been instrumental in drafting and negotiating EPC+F, subcontracting, cooperation, service, and supply agreements for the implementation of infrastructure line projects. Onat has participated in various mergers, including due diligence procedures, and has been involved in drafting shareholders and joint venture agreements, as well as preparing independent legal expert reports for IPOs, particularly for firms in the agriculture and defense industries.

Ms. Gizem ALUÇ
Managing Senior Associate
Gizem Aluç specializes in banking and finance, capital markets, project finance, and financial restructuring. She provides comprehensive legal counsel to local and international clients on a range of transactions, including the negotiation and drafting of complex facility and security agreements. In the capital markets area, she is experienced in managing bond issuances and advising companies through the entire process of IPO’s. Her work extends to regulatory compliance, where she supports publicly traded companies in meeting their ongoing legal obligations. Additionally, Gizem is involved in the incorporation of holding companies abroad, establishing holding structures, and facilitating the opening of related bank accounts, as well as guiding clients through the process of bank incorporation. Throughout her career, Gizem has played a role in numerous high-profile projects. She has provided legal support for large-scale infrastructure developments and corporate finance transactions, ensuring that financing arrangements and security packages are legally sound and aligned with clients’ strategic objectives. In the context of financial restructuring, she has worked on the restructuring of existing credit facilities, negotiating revised terms and conditions to stabilize and optimize clients’ financial positions. Her expertise in bond issuances includes preparing the necessary legal documentation and advising on compliance with regulatory frameworks both in Türkiye and internationally.

Mr. Burak Cem TÜTER
Managing Senior Associate
Burak Cem Tüter is a seasoned attorney with a strong background in corporate law, commercial law, contract law, labor law, enforcement and bankruptcy law, and compliance. He has been engaged with local and international clients, providing counsel on a wide range of matters. He has extensive experience in defense industry contracts, mergers and acquisitions, initial public offerings, and corporate restructurings. He has also played a key role in the transition and implementation of compliance processes for international companies he has represented. Additionally, he has been involved in preventive law, analyzing potential risks for companies and providing consultancy services to businesses on their development. In this capacity, he has developed strategies to ensure clients’ legal compliance, mitigate risks, and achieve their business objectives. His expertise in navigating complex regulatory environments has been invaluable to his clients, and he continues to be a trusted advisor in the field of corporate law.

Mr. Metehan BASKICIOĞLU
Managing Senior Associate
Metehan Baskıcıoğlu is a skilled legal practitioner at GSI, where he has developed extensive expertise across a broad spectrum of legal disciplines, including commercial law, criminal law, enforcement and bankruptcy law, and personal data protection law. His practice also encompasses specialized areas such as insurance law, administrative law, and tax law. Metehan is particularly well-versed in handling complex cases involving the correction of judicial decisions, trial renewal processes, and the intricate procedures required for individual applications to both the Constitutional Court and the European Court of Human Rights. In addition to his broad legal expertise, Metehan has actively participated in the drafting, negotiation, and resolution of a diverse array of contracts, including labour contracts, sales contracts, construction contracts in return for land share, and exclusive dealership contracts, among others. His experience in arbitration proceedings is noteworthy, having contributed to the resolution of complex disputes involving license agreements, CISG-governed goods purchase and sale agreements, and line lease agreements, often working alongside leading professors as an arbitrator. Metehan has also been involved in company dissolution (liquidation), the appointment of trustees, the concordat process, bankruptcy procedures, and the protection of shareholders' rights.

Ms. Birsu BAYDEMİR
Senior Associate
Birsu Baydemir specializes in energy, construction/real estate, and commercial law. She brings a wealth of experience to her practice, skillfully managing all facets of project transactions with proficiency in drafting, negotiation, and execution of project documents. Her focus on construction and real estate law is marked by extensive expertise in the nuanced areas of engineering, procurement, and service agreements, especially concerning power plant and construction projects. Notably, Birsu has played a pivotal role in developing contracts for complex construction projects, catering to the needs of high-profile clients. Her responsibilities also encompass leading litigation for these projects, showcasing her comprehensive legal expertise and strategic approach.

Mr. Aliberk BİRLİK
Senior Associate
Aliberk Birlik specializes in corporate law, commercial law, project development, capital markets and contracts law, and actively delivers comprehensive legal consultancy services to a broad spectrum of clients. Moreover, he has accrued substantial experience in managing both project and contract processes for his clients. As a senior associate, Aliberk offers strategic guidance and consultation on a wide array of legal matters. His contributions extend to the drafting of shareholders' agreements, consultancy agreements, service procurement agreements, license agreements, and a variety of corporate documents. He was involved in numerous data room preparations and conducted legal due diligence studies regarding corporate matters, demonstrating his extensive expertise and commitment to addressing the multifaceted legal needs of GSI’s clients.

Ms. Elif Doğa BOYNUKISA
Senior Associate
Elif Doğa Boynukısa offers extensive legal advisory services to both national and international clients, with a primary focus on corporate and commercial law. Her expertise encompasses active involvement in complex cross-border mergers and acquisitions, strategic partnerships, and joint ventures across a diverse range of industries, including construction, defense, energy, aviation, mining, agriculture, media, and fintech. Doğa has led data room preparations, conducted comprehensive legal due diligence studies, and drafted and negotiated critical documents such as share purchase agreements, shareholders’ agreements, joint venture agreements and consortium agreements. Doğa is also experienced in managing the closing procedures of M&A transactions and coordinating the applications for necessary governmental approvals and clearances, including those from the Turkish Competition Authority. Additionally, Doğa has also advised on the IPO of clients on both national and international scales. In addition to structuring transactions, Doğa possesses significant experience in resolving post-merger and acquisition disputes between shareholders, whether through settlement or judicial proceedings.

Mr. Arda İLÇÖL
Senior Associate
Arda İlçöl is a highly regarded attorney with extensive expertise in the fields of energy, construction/real estate, and commercial law. He has accumulated a wealth of experience in managing the full spectrum of project transactions, consistently demonstrating his proficiency in drafting, negotiation, and execution of all relevant legal documents. His methodical approach and keen attention to detail allow him to deliver tailored solutions in complex legal matters. In the area of construction and real estate law, Mr. İlçöl’s practice is characterized by his deep understanding of engineering, procurement, and service agreements, particularly within the context of power plant and large-scale infrastructure projects. He has been pivotal in the development of specialized contracts for intricate construction ventures, providing comprehensive legal counsel to meet the specific needs of high-profile clients. In addition to his transactional expertise, Mr. İlçöl also leads litigation processes, employing his broad legal knowledge and strategic perspective to effectively resolve disputes.

Mr. Hakan KESKİN
Senior Associate
Hakan Keskin is a seasoned attorney with deep expertise across multiple areas of law, including administrative, tax, criminal, labor, obligations, commercial, enforcement and bankruptcy, and personal data protection law. Known for his meticulous approach, Keskin thoroughly examines each client's legal matters, managing litigation with precision to deliver optimal results. He serves both Turkish and international clients, offering culturally aware and customized legal solutions that address diverse client needs and expectations. With a comprehensive range of services, Keskin assists clients in filing lawsuits, representing them during execution and investigation stages, attending hearings, and pursuing ordinary and extraordinary legal remedies. He is dedicated to safeguarding his clients' rights and achieving the most favorable outcomes for their cases. Beyond litigation, Keskin plays an instrumental role in contract review and revision, ensuring his clients' rights are robustly protected with a keen attention to detail. By staying at the forefront of legal developments within his practice areas, he continuously enhances his knowledge and experience to provide effective and dependable support, offering clients a blend of litigation and consultancy services they can trust.

Ms. Elif KORKMAZ KARASAÇ
Senior Associate
Elif Korkmaz Karasaç has extensive experience in contract law, which has been a focal point of her professional career. She is particularly active in managing the legal processes of multinational companies and foreign investors in Türkiye, delivering solutions tailored to their specific needs. Labor law is another area of special interest to her. To further her expertise, she has pursued various trainings and obtained certifications in this field. Elif is personally involved in managing the labor law processes for world-renowned client companies, successfully minimizing their legal risks and ensuring the smooth continuation of their business operations. In corporate law, she offers consultancy services on company formations, mergers and acquisitions, capital increases, general assembly meetings, board of directors’ decisions, and internal compliance processes. Her role involves producing strategic and practical solutions to meet the legal needs of client companies, helping them achieve their business objectives. She closely monitors her clients’ legal processes and provides them with quick and effective solutions to any legal issues they may encounter.

Mr. Enis Eyyüp MİNGSAR
Senior Associate
Enis Eyyüp Mingsar is a Senior Associate specializing in Mergers & Acquisitions, Corporate and Commercial Law, and Arbitration. He advises domestic and international clients across a wide range of sectors, with a strong emphasis on corporate and commercial matters. His practice includes advising on complex domestic and cross-border transactions, including mergers and acquisitions, strategic partnerships, and joint ventures. He also provides ongoing legal support to corporate clients, handling their day-to-day legal needs and retainer matters. Enis has extensive experience in drafting and negotiating key transactional documents such as share purchase agreements, shareholders’ agreements, investment agreements, and joint venture agreements. He regularly manages and coordinates all aspects of transaction closings. In addition, he has notable experience in resolving shareholder and partnership disputes, representing clients in both settlement negotiations and arbitration proceedings.

Ms. Elif SODAZAİ
Senior Associate
Elif Sodazai provides legal consultancy services to national and international clients, and has specialized in corporate law, commercial law, contract law, and labor law. She has gained significant experience in the management of the project and contract processes. Her comprehensive expertise and unique approach ensure the effective fulfillment of her clients' complex legal needs. Elif’s expertise encompasses a broad spectrum of commercial and corporate legal services, including the establishment of companies, M&A processes, IPO processes, legal due diligence, negotiations, preparation and review of commercial contracts across various industries, drafting detailed legal reports, providing informed legal opinions, efficiently conducting procedures before relevant authorities, and managing legal digitalization processes.

Mr. Cenk TELLİ
Senior Associate
Cenk Telli provides comprehensive services at every stage of criminal investigations and lawsuits related to Criminal Law. These include overseeing the execution of criminal investigations, providing representation and defense during the prosecution (trial) phase, attending search procedures, filing objections to search and arrest warrants, attending hearings, and pursuing both ordinary and extraordinary legal remedies. Additionally, he offers expertise in handling cases involving crimes against persons and property, offenses committed through mass media such as social media and the internet, and lawsuits stemming from the violation of personality rights online. His practice also extends to criminal and civil lawsuits governed by press law and reputation management. In the field of Labor Law, he has significant experience managing mandatory mediation processes for disputes, pursuing receivables and declaratory actions related to employee-employer relations, and handling compensation claims for workplace accidents. He is also skilled in litigating annulment of disposition cases, overseeing company dissolution and liquidation, facilitating trustee appointments, and managing concordat and bankruptcy procedures.

Mr. Ali TAŞAR
Of Counsel
Ali Taşar, a graduate of Bahçeşehir University Faculty of Law in 2013, chose to specialize in Criminal Law, completing his internship in this field in November 2014. His work encompasses a broad range of criminal law areas, including crimes committed via mass media, such as TV/radio, social media, and the internet, crimes against persons and property under Turkish Penal Law, forgery, crimes against constitutional order and its functioning, government security, espionage, state secrets, terrorism, organized crimes, and offenses against life, physical integrity, and sexual immunity, as well as Press Criminal Law and Penal Procedure Law. Mr. Taşar provides comprehensive services in Criminal Law-related investigations and cases. His expertise includes conducting criminal investigations, representing and defending clients in prosecution processes, being present during search procedures, objecting against search and arrest warrants, and taking legal actions. He has represented many high-level bureaucrats as victims or plaintiffs in cases and investigations against terrorist organizations of significant national interest. In addition to his Criminal Law practice, Mr. Taşar has represented well-known politicians, journalists, academics, and businessmen in social media-based cases concerning violations of personal rights. His experience extends to exercising rights of reply and disavowal in Press Law and Radio-TV Law, blocking internet content, litigations of nullity, and full remedy in Administrative Law. He is skilled in actions of pecuniary and non-pecuniary damages in the Law of Obligations, Family Law litigations, and legal applications arising from administrative fines. Mr. Taşar also has expertise in International Private and Procedure Law. He is the author of an article titled 'International Authority of Turkish Courts in Blocking off Access to the Contents of the Internet,' published in both Turkish and English.
Career
Career at GSI

Embodying Experience And Dynamism
Talented Lawyers & Counselors recognized for their expertise in their fields
Our team is comprised of more than 100 lawyers, counsellors and administrative staff, who are all recognized for their expertise in their fields as well as their professional skills.



