Berk is admitted to İzmir Bar Association (1999 and then to Istanbul Bar Association (2001). He focuses  in  M&A, corporate regulatory  and compliance practices and restructuring . His client relationships embrace large international companies and foreign investment companies across a range of sectors including finance, pharma, food, automation, , construction, manufacturing, property development and mining.

Berk is Partner at Cektir Law Firm and acts on behalf of his clients before Turkish courts and arbitral tribunals in different jurisdictions. In addition, he frequently provides advice and support to clients in early stage dispute management for the purpose of providing either quick resolution or tactical advantage in any subsequent proceedings.

Berk provides legal services also on the UK market, focusing on due diligence process, corruption cases, company compliance and investment in Turkey.

Berk has authored numerous articles published in English and Turkish languages .

Berk is a member of AIJA (2006) and  New York State Bar Association (2009).

Berk speaks fluently Turkish and English.