Senior Management

Ebubekir Şahin was born in 1974 in Çayeli, Rize. He graduated from Gazi University’s Faculty of Communication in 1995 and obtained his master’s degree in Journalism from the same university in 2002.

He began his professional career at the Ministry of Interior and the General Directorate of Security as a civil servant. During the governments led by the Refah- Yol, he served as Chief Advisor to the Prime Minister, and later as a Parliamentary Advisor at the Grand National Assembly of Türkiye (TBMM). Starting in 2002, he held various roles, including Private Secretary at the Ministry of Justice, Head of Department at the Ministry of Industry and Trade, and senior roles at the Turkish Radio and Television Corporation (TRT), Prime Ministry, and the Prime Ministry’s Directorate of Public Diplomacy.

Between 2011 and 2014, he served as Head of the Administrative and Financial Affairs Department at Anadolu Agency, then as Deputy General Manager and Acting General Manager.

From 2014 to 2017, he was the Undersecretary of the Ministry of Family and Social Policies. In 2017, he was elected by the Turkish Grand National Assembly as a member of the Radio and Television Supreme Council (RTÜK). In 2019, he was elected Chairman of RTÜK and re-elected in 2023, serving a total of four terms in this position.

He has also been serving as the Government Representative on the Board of the Press Advertisement Agency (BİK) since 2019 and as a Board Member of Türkiye Halk Bankası A.Ş. since 2020.

Mr. Şahin is married with two children and speaks English.

Ebubekir Şahin has served as General Manager of Türk Telekom since October 2025.

In 2006, Ömer Karademir graduated from Middle East Technical University, Faculty of Economics and Administrative Sciences, Department of Economics, and in 2015, he received his Master’s degree in Public Administration from Carnegie Mellon University. In 2006, he began his career as an Assistant Expert at the Undersecretariat of Treasury, General Directorate of Foreign Economic Relations.

From 2009 onwards, he worked at the General Directorate of Public Finance as an expert in receivables management, budget monitoring and analysis, and cash management departments, respectively. Between 2017 and 2020, he served as the Head of Department responsible for Credit Risk Management and then Market Risk Management at the same General Directorate. Between 2020-2021, he served as Assistant General Manager responsible for cash and risk management. Between 2021 and 2022, he served as a member of the Board of Directors of the General Directorate of State Supply Office.

Between 2021 and 2025, he served as the General Manager of Public Finance responsible for Treasury operations including cash, debt, risk and receivables management. In 2022, he became a member of the Board of Directors of the Development Bank of Türkiye, and between 2023 and 2025, he served as Vice Chairman of the Board of Directors.

Ömer Karademir has served as Finance Assistant General Manager of Türk Telekom since March 2025.

Dr. Ali Arıöz was born in Ankara in 1978. He graduated from Non-Commissioned Officer Preparatory School in 1994, and Middle East Technical University, Department of International Relations in 1999. Ali Arıöz, who studied banking and finance at Ziraat Bank Banking School between October 1999 and October 2000, received his Master’s degree in Public Administration from Carnegie Mellon University in 2009 and his PhD in Finance from Hacettepe University in 2023.

In 2000, he passed the entrance examination and began working as an Assistant Competition Expert at the Competition Authority and was appointed as a Competition Expert in 2004 after defending his thesis titled “Liberalisation in the Telecommunications Sector.” In his roles as Assistant Expert, Expert and Chief Expert, he conducted audits, research, investigations, SDIF (Savings Deposit Insurance Fund) asset sales and privatisation projects in the telecommunications and media sectors. In 2013, he was appointed as the International Relations Coordinator; in 2015, Head of the Department of External Relations, Training and Competition Advocacy; and in 2018, Head of the First Audit and Implementation Department responsible for the energy, petroleum and petrochemicals, chemical products, mining, machinery and equipment sectors. Ali Arıöz also served as Acting Press and Public Relations Counsel during this time. He has been a member of various commissions and boards established under the Competition Authority, as well as the Conciliatory Commission of the Ministry of Culture and Tourism and the Evaluation Board of the TÜBİTAK SOBAG Call Programme.

Since 2024, Ali Arıöz has been teaching the “Public Regulation in Industries” course in both Turkish and English at Başkent University, Department of Economics and has published articles and book chapters on his fields of study.

He is fluent in English and has intermediate proficiency in French.

Dr. Ali Arıöz, has served as Support Services and Procurement Management Assistant General Manager of Türk Telekom since March 2025. He has also served as acting Legal and Regulation Assistant General Manager since December 2025. 

Dr. Mücahit Aydın completed his undergraduate studies at Istanbul University Faculty of Law between 2000 and 2004. He pursued his academic studies in international law in the USA; he received his master's degree in International Trade Law with distinction from Case Western Reserve University, School of Law in 2007–2008. Between 2009 and 2014, he completed his Ph.D. in Corporate Law (SJD) with distinction from the University of Kansas, School of Law. His PhD studies focused on the duty of care of board members in joint-stock companies and corporate decision-making processes.

Dr. Aydın is a legal professional specialized in constitutional law, human rights law, and corporate law, and has held various positions within the Constitutional Court of the Republic of Türkiye since December 2014. Since May 2024, he has served as Deputy Secretary General of the Constitutional Court of the Republic of Türkiye. Previously, he held positions as rapporteur for individual applications (2023–2024), Director of the Centre for Constitutional Justice Studies (2021–2023), Deputy Secretary General (2019–2021), rapporteur for research and jurisprudence (2017–2019), and rapporteur for the General Assembly (2014–2017). In these capacities, he assumed high-level responsibilities in the areas of constitutional litigation processes, institutional evaluation, and legal analysis.

Between 2016 and 2018, he taught corporate law and contract law courses at the undergraduate level; and published academic works in the fields of constitutional law and human rights. He participated as a panelist and speaker at international legal and constitutional conferences held in Europe, Asia, and Africa; and contributed to international legal dialogue.

Dr. Aydın's areas of expertise include corporate governance, Board of Director’s liability, human rights law, constitutional law, and regulatory frameworks, and he combines his academic rigor and institutional experience with public and private sector perspectives.

Dr. Mücahit Aydın is married and has two children. He is fluent in English.

Upon completing his undergraduate education at McGill University with a double major in International Relations and Economics, İskender Bayrak obtained his Master’s degree in Human Resources Management at the same university.

He started his career at THY (Turkish Airlines) Canada in 2003, later working as a project manager at Deva Logistics in North America, and carried out global projects across different sectors within the UK-based human resources consultancy firm The Miles Partnership.

After joining Türk Telekom in 2011 as the HR Business Partner responsible for commercial functions, Bayrak also oversaw channel integration and the corporate business unit during the integration process of the group companies.

İskender Bayrak was appointed as the HR Business Partnership Director in 2018 and has since been responsible for recruitment, compensation management, employee experience, and outsourcing management functions. His most recent position was Employee Experience and Compensation Management Director.

Bayrak has completed the INSEAD Strategic Leadership Programme and holds a professional coaching certificate from the Coaching Training Institute (CTI). He is fluent in English and French.

İskender Bayrak has served as Human Resources Assistant General Manager of Türk Telekom since March 2025.

Hakan Ahmet Deniz graduated from Dumlupınar University's Faculty of Engineering in 2013. He has worked for many years in the fields of data centre infrastructure, network systems, and critical facility operations. Throughout his career, he has worked on large-scale infrastructure and data centre projects focused on physical infrastructure, network security, and back-up.

Between 2014 and 2018, he worked as an Electrical-Mechanical Control Engineer at Istanbul Otobüs A.Ş., where he was responsible for project management activities such as field control, contractor and supplier coordination, progress and payment tracking. During this period, he worked on infrastructure projects involving different disciplines, focusing on quality and adherence to the time schedule.

From 2018 to 2021, he worked as a Planning and Operations Engineer in the Data Centre Department of İsttelkom Inc. He carried out data centre white space planning, structured cabling, cabinet placement, commissioning projects, and operational monitoring of critical power and cooling infrastructures. He coordinated performance and continuity processes through monitoring and alarm systems and contributed to the development of technical teams' operational competencies.

He has worked in the field of Network Data Centre Planning at Turkcell since 2022. In this capacity, he has been involved in server and network infrastructure installation planning, capacity and cabinet infrastructure projects, multi-location infrastructure coordination, and procurement at data centres nationwide.

Hakan Ahmet Deniz is married and has two children. He speaks English fluently.

Gökhan Evren was born in Tokat in 1978. After graduating from Trabzon Yomra Science High School, he graduated from Marmara University, Department of Computer Engineering in 2000. He holds a Master’s degree (MS) in Science and Technology Policy from Middle East Technical University (METU) and a Master’s degree (MA) in Communications from the University of Westminster in London. He completed the Cybersecurity Program at Carnegie Mellon University and the Regulation Program at Michigan State University in the USA. He is currently pursuing a PhD in Political Science at Hacettepe University.

After working as a software engineer in private sector from 2000, Gökhan Evren joined the Information and Communication Technologies Authority in October 2001. He served as ICT Expert and Chief Expert across departments including tariffs, competition, consumer rights, and information technologies. Since 2014, he has held managerial roles, serving as Manager, Head of Department, and Deputy Head of the Institution, overseeing regulation, auditing, and cybersecurity operations.

He contributed to the establishment of the National Cyber Incident Response Centre (USOM) within ICTA, the creation of malware and digital analysis laboratories, the development of domestic and national cybersecurity solutions and systems, the acquisition of cyber threat intelligence capabilities, and the formation of the national cybersecurity organisational structure and capacity-building processes.

He has served as General Manager of Communications at the Ministry of Transport and Infrastructure from 2018, where he has led projects to expand universal service mobile infrastructure and networks. He also serves as Vice Chairman of the Cybersecurity Working Group at the International Telecommunication Union (ITU). He is married and has one child.

Gökhan Evren, most recently served as Wholesale Services Assistant General Manager. Gökhan Evren, is serving as Information Technologies Assistant General Manager of Türk Telekom since March 2025.

After graduating from Istanbul Kültür University, Department of Industrial Engineering, Ahmet Kamil Gençel completed his MBA at the same university. He started his career in the Regulatory Strategy Department at Avea. He played an active role in key processes such as mobile number portability and the 3G tender process. During the liberalisation of our country’s Telecommunications sector, when the number of operators in the market increased rapidly, he assumed a strategic role by serving as Inter-Operator Relations and Wholesale Services Manager. Following this position, Ahmet Kamil Gençel served as Strategy & PMO Director at Turkish Radio and Television Corporation TRT, where he managed the preparation of TRT’s new term strategy and business plans, the Corporate Transformation process, the establishment of TRT World, and played an active role on the formation of TRT’s digital VOD platform and game vertical. Prior to joining our company, he served as the Assistant General Manager responsible for TRT Strategy & Digital Products.

Ahmet Kamil Gençel, most recently served as Head of Strategy, Investment and Subsidiary Management. Ahmet Kamil Gençel, is serving as Strategy and Wholesale Services Assistant General Manager of Türk Telekom since March 2025.

Zafer Orhan was born in Elazığ in 1973. After graduating from the Department of Electronics of Elazığ Central Technical High School, he completed his undergraduate education at Fırat University, Department of Mechanical Engineering. He has a Master’s degree with a thesis in Business Management from Bahçeşehir University. He started his career in 1993 as Elazığ PTT Network Group Chief Engineer, and in 2000, he worked at the Marketing Department of Türk Telekom Elazığ Provincial Directorate. In 2003, he was appointed Organisation and Process Management Manager of the Strategy Directorate of Türk Telekom General Directorate and later served as the Organisational Development Manager. Between 2011 and 2016, he worked as Deputy Regional Director of Access and Deputy Regional Manager of Commercial Activities at the Türk Telekom Ankara Regional Directorate of Central Anatolia. Between 2016 and 2020, he managed the institutional transformation program of the CBRT as Assistant General Manager at the Central Bank of the Republic of Türkiye and later as General Manager of Corporate Transformation. In 2020, he first served as Assistant General Manager of Business Development and then as General Manager at Ulak İletişim A.Ş., a telecommunications company affiliated with the Presidency of Defence Industry. In February 2024, he stepped down as General Manager of Ulak İletişim A.Ş. and became the General Manager and Group CEO of Molekül A.Ş., which includes Masttech, Inttow and Numesys companies.

Zafer Orhan has served as Assistant General Manager of Network at Türk Telekom since July 2024.

Zeynep Özden graduated from the Department of Public Relations (English) at Bilgi University. She began her professional career in Corporate Customer Services at BP and later held both professional and managerial roles in the communications and media sector, focusing on strategic planning and performance management. In 2017, she joined Türk Telekom Group as Commercial Planning Director, where she led key initiatives such as “Efficiency of Sales Channel” and the “Restructuring of Corporate Sales Customer Segmentation.” Zeynep Özden later served as the Marketing Intelligence and Customer Experience Director, overseeing marketing, customer services planning, pricing, customer experience, and customer analytics.

Since September 2022, Zeynep Özden has served as Marketing and Customer Experience Assistant General Manager.

Serdar Toraman graduated from Istanbul University, Department of Electronic Engineering in 1999. Toraman began his career at IBM and held various positions at Sentim Bilişim Teknolojileri, ServisNET Telekomünikasyon Hizmetleri (a NETAŞ company), and Eczacıbaşı Bilişim.

Toraman has held senior roles in leading information technology companies, serving in executive positions at Avnet Technology (TechData), Borsa Istanbul, and the Information and Communication Technologies Authority.

Toraman later served as IT Director and Consultant at AssisTT Guidance and Customer Services, a subsidiary of Türk Telekom, and as General Manager of PTT Bilgi Teknolojileri A.Ş. Serdar Toraman served as the CEO of our subsidiary company İnnova between 2020-2025.

Serdar Toraman has served as Head of Corporate Risk of Türk Telekom since March 2025.