Adil Kaya serves as CEO of SIGOS. He joined SIGOS in 1990 and became Managing Director in 2008, driving and increasing the company’s worldwide success continuously.. Mr. Adil Kaya is an established international manager of broad experience in telecommunications. With his in-depth technical and market knowledge he has made significant. contributions to network operators, vendors as well as standardization institutes.. Mr. Adil Kaya holds a Master’s degree in Electrical Engineering from the University of Applied Sciences in Cologne, Germany.