Embedded programmer with experience wireless mesh Zigbee, 802.15.4g

I am looking for experience embedded programmer that have working experience and a huge interest in working with wireless mesh technologies. We have radio chip that we want to test one or two open source mesh stacks on. So we are looking for somebody that have very good experience in embedded programming and also have been involved developing system/application using 802.15.4 mesh stack or similar. It is a big advantage if you are familiar and have worked open source mesh stacks så you know about the possibilities as well as challanges with using open source projects. Firts part of the project will be investigative and if that turns out positive we may starta an implementaion phase.