Open-Source projects I am involved:

• http://www.glastopf.org/team.php - Glastopf is a Honeypot which emulates thousands of vulnerabilities to gather data from attacks targeting web applications.
  
• Whitepaper on Glastopf : http://www.honeynet.org/papers/KYT_glastopf
• HoneyNet - a central database for our HoneyNet: http://honeystats.info/
• German Security+Honeypot Blog: http://blog.botnetzprovider.de/
• Bitcloud: http://bitcloudproject.org/w/User:MCM-Mike

Expertise:

• Server security/administration - mostly Debian based system - ISP scale - Penetration tests
• Forensic - including post mortem analysis
• Honeypots
• Central logging
• Central-Backup / disaster recovery
• IRC Aficionado

more information can be found here: http://redd.it/3904gr