Erol Lengerli has worked within the body of International Business Machines (“IBM”), one of the biggest technology companies of the world, including IBM Turkey branch, IBM International Technical Support Organization and IBM Global Services, for many years and at the same time, taken part in the post graduate academic staff of Sabancı University, Bahçeşehir University and Istanbul Bilgi University. After being appointed as the Chairman of the Board of Directors of KPMG Turkey, one of the leading audit companies, and Lead Auditor of IT Audits of Banking Regulation and Supervision Agency (“BDDK”), Erol Lengerli continues his works in TRANGELS Angel Investment Network as a partner.