Platforms:

• Embedded (PPC, 68k, H8, ARM, i386, SLE88)
• Unix (FreeBSD, Linux)
• Web (Apache, Django)

Languages:

• C, C++, Objective C
• Python

Databases:

• SQL (MariaDB/mySQL, PostgreSQL, SQLite)

Communication Protocols:

• TCP/IP, UDP
• HTTP, SMTP, telnet, ftp
• Protokolldesign
• GSM, 3GSM (UMTS)