Our Management

Born in Trabzon in 1976, Sezgin Lüle graduated from the Department of Industrial Engineering at Boğaziçi University’s Faculty of Engineering in 1998 and completed a master’s programme in International Banking and Finance at the University of Birmingham in 2004.

Lüle began his career in 1998 as a Trainee Assistant Organisation and Methods Specialist at the Organisation Department and became an Assistant Inspector at the Board of Inspectors in 1999. Between 2008 and 2011 he served as Assistant Manager and Unit Manager at the Project and Change Management Division, and in April 2017 he became Enterprise Architecture Manager. Having completed the Advanced Management Program at Harvard Business School in 2019, Sezgin Lüle was appointed Deputy Chief Executive of Türkiye İş Bankası on 28 January 2021.

Born in Eskişehir in 1977, Kerem Akıner graduated from the Department of Labour Economics and Industrial Relations at Ankara University’s Faculty of Political Science.

Akıner joined the Board of Inspectors of Türkiye İş Bankası A.Ş. as a Trainee Assistant Inspector in 2000. He went on to serve as Assistant Manager of the İstanbul Corporate Branch in 2008, Manager of the İkitelli Sanayi/İstanbul Branch in 2015, Unit Manager in the SME and Business Banking Sales Division in 2017, Head of the Agricultural Banking Marketing Division in 2020 and Head of the Commercial Banking Products Division in January 2024. On 26 November 2025 he was appointed Head of the Human Resources Division, a position he still holds.

Having joined the Board of Erişim Customer Services as a Board Member in April 2026, Akıner has served as Vice Chairman of the Board since September.

He is married and has a daughter.

Born in 1975, Seçil Ünlüsoy Taşarkan completed her secondary and high school education at the Private Sankt Georg Austrian High School and graduated from the Department of Business Administration at Marmara University’s Faculty of Economics and Administrative Sciences. She started her career in 1997 at the Financial Institutions Division of Türkiye İş Bankası A.Ş., and between 1999 and 2020 continued at the bank’s Retail Banking Marketing Division as Specialist, Assistant Manager and Unit Manager respectively.

In 2021 she was promoted to Head of the Payment Systems Products Division of Türkiye İş Bankası A.Ş., and in 2024 she was appointed Head of the Customer Relations Division. Still holding this position at İş Bank, Ms Ünlüsoy Taşarkan was elected to the Board of Directors of Erişim on 26 February 2025.

Born in Hopa, Artvin in 1972, Cahit Sarıahmetoğlu is a graduate of Anadolu University’s Eskişehir Faculty of Business Administration. He joined Türkiye İş Bankası in 1993 at the Mahmutpaşa/İstanbul Branch, where he worked as Service Officer and later as Second Manager. In 2005 he was appointed Manager of the Pazar/Rize Branch, and subsequently served as Manager of the Tuzla OSB/İstanbul Branch in 2007, the Tuzla Deri Sanayi/İstanbul Branch in 2009, the Kartal/İstanbul Branch between 2011 and 2016, the Ümraniye/İstanbul Branch between 2016 and 2018 and the Galata Commercial/İstanbul Branch between 2018 and 2021. Since June 2021 Sarıahmetoğlu has been Manager of the Maltepe/İstanbul Branch. He is married with three children.

Born in Trabzon in 1975, Atakan Öztürk graduated from the Department of Business Administration at Anadolu University’s Faculty of Business. He joined the Dördüncü Levent/İstanbul Branch as a Clerk in 1997, becoming an Officer at the same branch in 2002 and Second Manager in 2007. In 2010 he became Manager of the Şile/İstanbul Branch, and in 2011 he served as Retail Sales Assistant Regional Manager, first at the İstanbul-Kadıköy Regional Directorate of the Retail Banking Sales Division and then at the İstanbul-Kadıköy Regional Sales Directorate. He became Manager of the Alibeyköy/İstanbul Branch in 2016, the Kabataş/İstanbul Branch in 2019 and the Galatasaray-Beyoğlu/İstanbul Branch in 2021. On 29 April 2024 Atakan Öztürk was appointed İstanbul-Bayrampaşa Regional Sales Manager.

Öztürk is married with two children.

Born in Ankara in 1984, Süleyman Emrah Duran graduated from the Department of Electrical and Electronics Engineering at Bilkent University’s Faculty of Engineering in 2006.

The same year he joined the Information Technology Department of Türkiye İş Bankası A.Ş. as a Software Specialist. He worked as a Project Manager at the IT Architecture and Security Division between 2008 and 2012 and as a System Architect at the Information Technologies Division between 2012 and 2015. He continued as Assistant Manager at the Data Management Division in 2017, Assistant Manager at the Information Security Coordination Office in 2020 and Unit Manager at the same office in 2021. On 29 April 2024 he was appointed Head of the Information Security Coordination Office of Türkiye İş Bankası A.Ş.

Süleyman Emrah Duran holds CISSP, CISM and CISA certifications and speaks English.

Born in Germany in 1976, Meral Elmaz completed her undergraduate studies in 1999 with a degree from the Department of Economics at Middle East Technical University’s Faculty of Economics and Administrative Sciences.

She began her career the same year as an Assistant Training Specialist at the Talent Management Division of Türkiye İş Bankası A.Ş.

Throughout her career she has taken on responsibilities as a specialist and manager in areas such as training design and delivery, recruitment and promotion exams and interviews, and the design and implementation of assessment and development centre activities.

Having earned a coaching certificate after her training at the Erickson Coaching School, Elmaz also carries out in-house coaching activities.

Meral Elmaz speaks English and German, and is married with one child.

Born in Samsun in 1977, Ahmet Emre Karabacak graduated from the Department of Business Administration (English) at İstanbul University’s Faculty of Business. He joined the Consumer Loans Division as a Trainee Assistant Credit Specialist in 2000. He became a Grade 5 Specialist at the Retail Loans Monitoring Division in 2009, Assistant Manager at the same division in 2011 and Unit Manager in 2016, and in 2020 he became Unit Manager at the Loan Monitoring Division. Holding the bank’s Foreign Exchange Specialist (Kambiyocu) title, Ahmet Emre Karabacak was appointed Head of Payment Systems Operations on 26 November 2025.

Since September 2026 he has served as a Board Member of Erişim Customer Services.

Ahmet Emre Karabacak is married with a daughter and speaks English.

İlkay Güneş graduated from the Department of International Relations at Ankara University’s Faculty of Political Science in 2003 and completed master’s degrees in European Studies at Boğaziçi University in 2007 and in Law at the University of Bristol, UK, in 2009. Güneş joined the Subsidiaries Division of Türkiye İş Bankası A.Ş. as an Assistant Specialist in 2004 and was appointed Assistant Manager at the same division in 2014.

Since September 2022 İlkay Güneş has been Unit Manager at the Subsidiaries Division, and serves as a Board Member of TSKB Gayrimenkul Yatırım Ortaklığı A.Ş., Trakya Yatırım Holding A.Ş., İş Merkezleri Yönetim ve İşletim A.Ş., İş Portföy Yönetimi A.Ş., İş Enerji Yatırımları A.Ş., İş Yenilenebilir Enerji Proje Yönetimi Danışmanlık A.Ş., Batı Karadeniz Elektrik Dağıtım ve Ticaret A.Ş., Kasaba Gayrimenkul İnşaat Taahhüt ve Ticaret A.Ş., Enaş Enerji Yatırımları A.Ş. and Ödesis Finansal Teknoloji Girişimleri A.Ş.

Born in Ankara in 1977, Utku Büyükaksoy graduated from the Department of Electrical and Electronics Engineering at Middle East Technical University in 1999.

The same year he joined Türkiye İş Bankası as a software specialist. In the following years he worked as a software designer, project manager and assistant manager at the Software Development Department. Between 2011 and 2015 he managed the software teams at Softtech that developed Türkiye İş Bankası’s call centre, mobile banking and Bankamatik (ATM) solutions. In 2015 he joined the Erişim family as the Director responsible for operations and development. Having served as Deputy General Manager since 2019, Utku Büyükaksoy has been General Manager since October 2024.

Büyükaksoy completed the Executive MBA programme at Sabancı University in 2017 and speaks English.

Born in Nevşehir in 1976, Doğan Çitpiş graduated from the Department of Business Administration at İstanbul University in 1999.

He started his career in 2000 as a Customer Representative at the Türkiye İş Bankası Call Centre and went on to work as a Team Leader. At the Call Centre Business Development Unit, he worked on integrating banking products and applications into the call centre and developing them. After serving as Second Manager at the Türkiye İş Bankası Samsun Branch in 2012, he joined the Erişim family as Operations Supervisor in 2013. He served as Customer Services Manager from 2014 to 2021 and as Customer Services Director from 2021 onwards.

Since 2024 he has continued as Deputy General Manager.

Born in 1978, Taner Yücedağ graduated from the Department of Political Science and International Relations at Marmara University’s Faculty of Economics and Administrative Sciences in 2000. He joined the Board of Inspectors of Türkiye İş Bankası A.Ş. as an Assistant Inspector in 2001, was appointed to the Retail Loans Monitoring Division in 2009 and served there as Assistant Manager and Unit Manager until 2024.

Appointed Head of Internal Systems at Erişim Customer Services in March 2024, Taner Yücedağ speaks English.

Born in Sivas in 1977, Kenan Ölmez graduated from the Department of Economics at Balıkesir University in 2000. In 2024 he completed the Human Resources Management programme at İstanbul University.

He started his career in 2001 as a Candidate Clerk at the Türkiye İş Bankası Beyoğlu/İstanbul Branch and continued as an Officer at the Afşin/Kahramanmaraş Branch in 2005. In 2007 he was appointed Officer at the Human Resources Management Division. He took an active role in the bank’s Customer-Oriented Transformation (MOD) project and held various titles in the Career Management and Recruitment units of the Human Resources Management Division, serving there as Second Manager in 2011, Assistant Manager in 2016 and Unit Manager in 2023.

He contributed to the transformation of Türkiye İş Bankası’s Career Management Unit into the Human Resources Representation Unit, managing the requests of many employees at every level through one-to-one communication. Having played an active role in many projects of the digital transformation of the human resources function, Kenan Ölmez joined the Erişim Customer Services family as Coordinator in April 2026.

Born in İstanbul in 1981, Cemal Güllüoğlu graduated from the Department of Computer Engineering at Işık University in 2006.

After working as a Software Specialist in the telecommunications sector between 2003 and 2007, Güllüoğlu worked as a Software Engineer and Product Manager at Turkcell Global Bilgi between 2007 and 2015, as a Consultant and Data Scientist at Nuance Communications between 2015 and 2017, and as Enterprise Applications and IT Governance Manager, Technology Solutions Director and Advisor to the General Manager at Türk Telekom Assistt and İnnova respectively between 2017 and 2022. Between 2022 and 2024 he served as Director and Deputy General Manager responsible for digital transformation and compliance at Procat.

Having completed the Executive MBA programme at Boğaziçi University with honours in 2022, Cemal Güllüoğlu has also been teaching Digital Transformation as a part-time lecturer at Işık University’s Faculty of Engineering and Natural Sciences since 2023. He joined the Erişim family as IT Director in November 2024.

Since December 2025 he has continued as Director of Information Technologies and Artificial Intelligence.

Born in Ceyhan, Adana in 1982, Esra Tan graduated from the Department of Political Science and Public Administration at Middle East Technical University in 2005.

She began her career in 2005 as an Assistant Specialist at İş Bank’s Alternative Delivery Channels Department, working on internet security as well as call centre reporting and business analysis.

She joined Erişim Customer Services in 2013 as Administrative and Financial Affairs Manager, became Human Resources Manager in 2017 and has served as Human Resources Director since March 2023.

Born in İstanbul in 1978, Görkem Yılmaz graduated from the Department of Business Administration at İstanbul University in 2001.

Yılmaz started working in the financial affairs department of İş Net A.Ş. in 2003 and joined the Erişim family in 2017.

After serving as Financial and Administrative Affairs Manager at Erişim Customer Services until 2022, Yılmaz has been Director of Financial Affairs since 2022.

He speaks English.

Born in Samsun in 1978, Aslıhan Sönmez graduated from the Department of Geomatics Engineering at İstanbul Technical University in 2000.

The same year she joined the Türkiye İş Bankası Alternative Delivery Channels Department as a customer representative, and over 13 years worked in a variety of functions including customer services, the trading room, project and business development, and training.

Aslıhan Sönmez managed Human Resources at Erişim Customer Services between 2013 and 2017 and served as Quality and Development Manager from 2017 to 2021. Having worked as Development Manager from 2021, Sönmez has been Head of Talent Management since March 2023.

Born in İstanbul in 1988, Burak Kaya graduated from the Computer Technologies and Programming programme at Selçuk University in 2008 and from the Department of Business Administration at Anadolu University’s Faculty of Business in 2018.

He began his career at Erişim Customer Services as a Customer Representative in 2013. Kaya went on to serve as Team Leader between 2015 and 2016, Reporting Specialist between 2016 and 2021 and Reporting Supervisor between 2021 and 2025.

Since December 2025 he has served as Head of Data Management within the Information Technologies and Artificial Intelligence Directorate.

Born in İstanbul in 1990, Cihan Kılıç completed his studies at the Department of History of Eskişehir Osmangazi University’s Faculty of Science and Letters, together with the Pedagogical Formation Certificate Programme at the Faculty of Education, in 2012. In 2024 he graduated from the Banking and Insurance programme at Anadolu University’s Open Education Faculty.

He began his career in 2014 as a branch employee at Türkiye Garanti Bankası, and in 2015 he joined Erişim Customer Services as a Customer Representative. He served as Team Leader between 2016 and 2021 and as Customer Services Supervisor at the Sales and Affiliate Operations Department between 2021 and 2024.

Since December 2024 he has served as Affiliate Operations Manager.

Born in Zonguldak in 1989, Engin Bayrak graduated from the Department of Communication Design and Management at Anadolu University’s Faculty of Communication Sciences in 2012 and from the Department of Sociology at Anadolu University’s Open Education Faculty in 2024. He began his corporate career in November 2012 as one of the first five customer representatives to join Erişim Customer Services when the company was founded. Continuing his career at Erişim Customer Services, he took on the role of Team Leader from 2014 and Training Specialist from 2016. After a short spell as Quality Specialist, Engin Bayrak returned to his role as Training Specialist in 2019.

From 2021 he served as Financial Services Calls Supervisor, and since March 2024 he has been Head of Financial Services Calls.

Born in Eskişehir in 1991, Engin Günel graduated from the Computer Programming programme at Anadolu University in 2011 and from the Department of Business Administration at Anadolu University in 2014. He joined Erişim Customer Services as a Customer Representative in 2014. Günel went on to serve as Inbound Calls Team Leader in 2015, Quality Specialist between 2016 and 2020, Quality Supervisor between 2021 and 2024 and Sales Operations Manager between 2024 and 2025.

In December 2025 Günel took up the role of Head of Customer Experience.

Born in Konya in 1992, Fırat Ardıçlar graduated from the Department of Public Administration at Anadolu University’s Faculty of Economics and Administrative Sciences in 2015. He joined Erişim Customer Services as a Customer Representative in 2013. Ardıçlar went on to serve as Inbound Calls Team Leader in 2015, Bank Credit Card Retention Team Leader between 2016 and 2020 and Customer Services Supervisor between 2021 and 2025.

In December 2025 Ardıçlar took up the role of Sales Operations Manager.

Born in Amasya in 1974, Filiz Soylu graduated from the Department of Business Administration at Anadolu University. She began her career in 2000 as a Customer Representative at the Alternative Delivery Channels Department of Türkiye İş Bankası, and over 13 years worked in the trading room, reporting, and project and business development functions.

She joined Erişim Customer Services on 19 November 2012 as Planning Supervisor and has served as Solution Development Manager since 2014.

Born in Erzurum in 1981, Hakan Atalay graduated from the Department of Public Administration at Çanakkale 18 Mart University’s Faculty of Economics and Administrative Sciences in 2004.

He began his corporate career in 2006 as a Customer Representative at the Alternative Delivery Channels Division of Türkiye İş Bankası. In 2009 he took on knowledge management work in the same division as Business Development Officer, and in 2010 he was appointed Team Leader in the call centre’s inbound calls operation as Service Officer.

In 2012, while Erişim Müşteri Hizmetleri A.Ş. was being founded, his proposal that the company be named “Erişim” was adopted. From 2013 he served as Corporate Communications Specialist at Erişim Müşteri Hizmetleri A.Ş., and from 2016 as Corporate Communications Supervisor. Until 2021 he led the company’s knowledge management and communication management work. He also took part in the company’s technology infrastructure projects between 2013 and 2016 and in its location renovation projects between 2017 and 2018.

From 2021, as Process Projects Supervisor, Hakan Atalay worked on designing business processes in a digital environment, and since 2022 he has served as Head of Process Management. He speaks English and German.

Born in Artvin in 1984, Mehtap Umur graduated from the Department of Economics at Dumlupınar University’s Faculty of Economics and Administrative Sciences in 2008.

She began her career in 2008 as Human Resources Officer at Eras İnşaat, and between 2012 and 2016 she worked as Human Resources Chief at Başak Kiremit.

She joined Erişim Customer Services in 2016 as Resource Management Specialist. Having become Resource Management Supervisor at Erişim Customer Services in 2019, Umur has served as Human Resources Manager since March 2023.

Born in İstanbul in 1983, Oktay Çolak graduated from the Department of Business Administration at Anadolu University in 2004.

He began his career in 2004 as a Financial Controller at İş Net, an İş Bank subsidiary, and became Head of Financial Affairs at İş Net in 2013.

He joined Erişim Customer Services in April 2015 as Financial Affairs Supervisor. Having qualified as a Certified Public Accountant (SMMM) in 2022, Çolak has served as Financial Affairs Manager since March 2023.

Born in Eskişehir in 1992, Pelin Avcıoğlu graduated from the Department of Health Management at Süleyman Demirel University in 2015.

She joined Erişim Customer Services in February 2016 as a Customer Representative, her first professional role, and went on to serve as Bank Inbound Calls Team Leader between 2017 and 2021 and Customer Services Supervisor between 2021 and 2024.

Since December 2024 Avcıoğlu has served as Head of Card Services Calls.