Note that this is not a comprehensive list of my skills, only an indication of some commonly requested ones.
| Category | Skill | Duration |
| High level | Software architecture (Shaw, Perry & Wolf, Fielding) | 15 years |
| Web architecture (HTTP, URI, REST) | 13 years | |
| Mobile/wireless (J2ME, WAP, low bandwidth, embedded development) | 6 years | |
| Object Orientation | 12 years | |
| Distributed systems (DCE, CORBA, Web, SOAP & Web services, DCOM, Tuple spaces, etc..) | 17 years | |
| Modelling (UML, Schlaer/Mellor, Ward/Mellor, Booch, etc..) | 6 years | |
| Documentation (DoD 2167A) | 4 years | |
| Performance Modelling, Analysis, and Simulation | 2 years | |
| Programming | Java J2ME | 5 years |
| Python | 2 years | |
| Java J2SE/J2EE | 4 years | |
| C/C++ | 6 years | |
| Scripting (Bourne/ksh, awk) | 10 years | |
| Technologies/environments | Unix (SunOS/Solaris, HP/UX, Linux, SCO, etc..) | 22 years |
| Protocols (TCP/IP, HTTP, SOAP) | 15 years | |
| XML (XML, Namespaces, etc..) | 10 years | |
| Semantic Web & Linked Data | 6 years |