| June 1968 |
Abitur at the old-language Scheffel-Gymnasium in Lahr (Black Forest) |
| 1968 - 1969 |
Radio operator training with the German Navy |
1970 - 1973
|
Radio officer in merchant shipping (temporarily) |
1970 - 1974
|
Studied mathematics/physics/computer science at the University of Bonn |
| 1971 - 1976 |
Scholarship holder of the Cusanuswerk scholarship program |
| 1974 |
Diploma in mathematics |
1974 - 1976
|
Research assistant at the mathematics Schools of the University of Bonn |
| 1976 |
Doctorate (Dr. rer. nat.) with a dissertation in the numerical field of partial differential equations |
1976 - 1978
|
AEG - Telefunken, Constance, Process Computer Division |
| 1979 |
Tandem Computer, Hamburg |
1980 - 1982
|
AEG - Telefunken, Constance, Information Technology Division |
1982 - 1992
|
Professor for data networks and remote data transmission, Aachen University of Applied Sciences |
| 1988 |
Founding of KryptoKom Gesellschaft für kryptographische Informationssicherheit und Kommunikationstechnologie mbH, Aachen |
1988 - 1998
|
Managing Director of KryptoKom, Aachen |
1992 - 2017
|
University Professor of Communications Engineering with a focus on communications engineering at the University of Siegen, School of Science and Technology, Department of Electrical Engineering and Computer Science |
| 2017 - 2025 |
Deputy chair of the above-mentioned chair |
| until today |
Professor Emeritus in the employment of the University of Siegen |