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  During his six years' occupation at Fraunhofer Institute FOKUS Berlin, Mr. Vassiliou-Gioles became senior expert in testing and was assigned as Deputy Chief of Competence Center for Testing Interoperability and Performance. He is being involved in several standardization groups of ETSI for many years, e.g. the TTCN-3 working group.
Mr. Vassiliou-Gioles holds a Master in Electrical Engineering from Technical University Berlin.


Theofanis Vassiliou-Gioles
Founder and Chief Executive Officer




  Before co-founding Testing Technologies, Mr. Pietsch had worked as a researcher and project leader at Fraunhofer Institute FOKUS Berlin for several years.
Based on his strong testing and development background, he is in charge of Testing Technologies' test development tool series as chief architect.
Mr. Pietsch holds a Master in Electrical Engineering from Technical University Berlin.

Stephan Pietsch

Founder and Chief Technology Officer




  Mrs. Schieferdecker has been working as a researcher at Fraunhofer Institute FOKUS since 1993. She has founded, and been head of Competence Center for Testing, Interoperability and Performance at FOKUS since 1997.
Ms. Schieferdecker holds a Master in Mathematics from Humboldt University Berlin and a Ph.D. in Engineering from Technical University Berlin. She is Professor for Computer Science at Technical University Berlin. 

Prof. Dr. Ina Schieferdecker
Founder and Chief Strategy Officer




  Before joining Testing Technologies in 2005, Gabor Matyus had acted as an international sales executive in fast growing software companies like Lotus Development (IBM), Attachmate, NMS Communications or Trados for more than 20 years.
He holds a Master in Economics from the University Goettingen.

Gabor Matyus
Vice President Sales



  Until 1998, Dirk Borowski was occupied in the Automated Test Department of DeTeWe - a leading German phone manufacturer. Afterwards he started working in the area of testing private branch exchanges at Fraunhofer Institute FOKUS.
Mr. Borowski joined Testing Technologies shortly after its foundation. He became certified TTCN-3 Training expert in 2007. Mr. Borowski holds a Master in Electrical Engineering from Technical University Berlin.

Dirk Borowski
Vice President Customer Care






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   July 16: TTsuite-Presence out now! The test suite with about 290 predefined test cases for testing Presence service in IMS networks. Read more. >>>
   July 2: Dramatic efficiency increase with TTCN-3 load testing resulting from a partnership between Nexus Telecom and Testing Technologies. >>>
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