Managing Director

Ali Carl Gülerman

Chief Executive Officer

Ali Carl Gülerman has over 20 years of experience as a senior executive in the IT sector. He managed projects on the topics of Big Data and Digital Transformation. Gülerman was managing director of Inforte Inc., a New York stock exchange listed company, as well as Business & Decision Germany (part of French BI company ). In his previous roles he successfully established international go-to-market and growth strategies for several leading professional service and IT companies. Gülerman studied Industrial Engineering at Technical University Berlin and Economics and Business at Stanford University in California.

Executive Staff

Lothar Hänsler

Chief Operations Officer

With a professional track record of more than 35 years, Lothar Hänsler held various IT management positions in Germany, the United States and Singapore. Before joining Radar, Lothar Hänsler was Head of Cybersecurity at Rolls Royce Power Systems AG, a division of Rolls-Royce plc. He was in charge of setting up a Cyber Defense Center. Hänsler holds a degree in Business Administration from Pforzheim University.

Slobodan Keseljevic

Chief Technology Officer

Slobodan Keseljevic brings in more than two decades of experience in top management positions and consultancy in Telecommunications and Finance. He has led several large-scale projects in digital transformation and IT change to success. Keseljevic holds a master’s degree in Mechanical Engineering from Vienna University of Technology and completed certificates in Software Engineering and Advanced Management.

Sebastian Michels

Head of Global Sales

Sebastian Michels has more than 20 years of experience in the IT sector. He is a founding member of base-camp in 2006 and Radar Cyber Security in 2011. The enterpreneur brings in extensive leadership experience in business development, sales and channels.  Michels studied Transport Economy and Logistics at the University of Bremerhaven and Business Administration at the University of Vienna.

Dr. Christian Polster

Authorized Signatory
Chief Portfolio Officer & Chief Security Officer 

Christian Polster is an experienced strategist and brings in more than 20 years of experience in IT Security, as well as a strong customer perspective for the product portfolio including compliance topics. He worked in the global IT management of Lufthansa and in several positions at CSM Security Management AG and SurfControl plc. Polster studied Business Informatics at Vienna University of Technology, Technical University of Madrid, and Business Administration at Vienna University of Business, London School of Economics (LSE), HEC Paris and Singapore Management University (SMU).

Petra Pongratz

Chief Financial Officer

Petra Pongratz brings in several years of finance leadership experience with management positions in IT and technology companies. Prior Radar, she worked at a global IT Consulting group. The proven financial specialist has been in charge of accounting and controlling. Today she additionally manages Legal Affairs and Human Resources. She studied Accounting and Controlling in Graz, majoring in English with a combination of Europe, Economics, Language and Law.

Advisory Board

Thomas Hoffmann


Thomas Hoffman has over 20 years of experience in the international management of IT security companies. He was the founder of EUNET Austria and EUNET International BV. Furthermore Hoffmann also founded CSM Security Management Ltd. Hoffmann signed as Managing Director for Central Europe and advisor to the board of SurfControl. Before founding Radar Cyber Security, Hoffmann was Sales Leader Austria for Security Services and Software Support for IBM Austria. He studied international business at the Vienna University of Economics and Business and the Concordia University in Montreal.

Dr. Gernot Hofer

Invest AG

Dr. Gernot Hofer is Member of the Board at Invest AG. Previously he gained international experience in Hong Kong and with a Vienna venture capital fund. Dr. Hofer has a degree in Business Studies from the Vienna University of Economics and was awarded a doctorate in Venture Capital and Private Equity.

Jörn Werner


Jörn Werner is Operating Partner at Armira and has led several companies in their digital transformation process as their CEO. He has management experience from private equity owned companies, family businesses and public companies. He holds a degree in Economics and Psychology from University of Hamburg.

Jens Westernhagen


Jens Westernhagen is Investment Director at Armira and has several years of experience in the investment sector as a board member. He studied Industrial Engineering at the Karlsruhe Institute of Technology (KIT) and in the USA.