Do there exist interest oriented job boards?

Many programmers I know don't express their desired employers in terms of being "in the social chat space" or "working in Uber for employment", rather, they use words like "... working for a company that advances the state of SystemD" (CoreOS would be the archetype here) or "working somewhere where someone can explain the details of HiPE to me" (presumably 2600hz or WhatsApp are candidates here).

Job sites seem to have every aspect of the hiring process fleshed out -- but only the most superficial technical details are conveyed to the applicant.

I'd personally be ecstatic if I could find a firm using SAT Solvers or commercializing program synthesis -- even if I was doing CRUD apps all day. I have a feeling many others would too (although perhaps with some different interest)

Are there any resources that partition companies on this basis?