I recently talked with Jean-Luc Valliant, the CTO at LinkedIn, about a new project they're starting. Of course I was interested, but I'm here at Symantec now and jumping ship after just six months is just not how I do things.
But I did say I'd put the word out. They're looking for top-level database theorists - people who have a solid understanding of and have contributed to database research. They're also looking for people with real-world experience building and deploying high performance, highly scalable database solutions, dealing with things like storage, caching, sharding/clustering, messaging and so on.
If you're interested, contact Jean-Luc Valliant at LinkedIn. If you have trouble reaching him, let me know at david at vancouvering dot com and I'll connect you up.