VoIP: I am a seasoned VoIP architect/engineer. I have worked with the MGCP and SIP signaling protocols and with almost every vendors' equipment. I don't think there's a problem that I haven't seen before. :-)
Networking/IT: All IP based applications require a high-quality and resilient IP network, and a solid IT infrastructure to perform adequately.
Security: Thwarting bad guys and detecting them if they breach defenses are obsessions of mine.
Programming: I love to code. Python is my new favorite language.