I am the lead developer of the x264 project.  My consulting page, with CV.

I offer professional consulting services for anything related to open source multimedia technology (esp. video compression and streaming).  I also do coding work; my primary expertise, besides video specifically, being x86 SIMD assembly optimization (esp. integer SIMD).  I've written thousands of lines of SIMD optimization for x264 H.264 encoding, ffmpeg VP8 decoding, ffmpeg H.264 decoding, CoreAVC H.264 decoding, and more.

In addition to my normal, dollar-based rates, I'll also now work for BTC.  Contact me at jason@x264.com for details.