CloudFlare, Inc
Locations: San Francisco, CA, US; London, UK; Singapore, SG; VISA ONSITE
CloudFlare is the leading edge network performance and security company -- with customers ranging from "mommy blogger" WordPress blogs all the way through large, highly dynamic sites like HN, Reddit, and many enterprise sites.  There are all the challenges of making the Internet better from a performance perspective as well as trying to drive security forward for everyone.
We're rapidly growing and always looking to fill a variety of roles (we started 2015 at 128 and are looking to double every year...), but a few in particular.
<a href=" has a full listing.  Please apply through the website.
1) Principal Engineer -- we're looking for someone who can help re-architect the parts of our site which are starting to show scaling issues (a high class problem to have).  A lot of our stack is in PHP and Postgres stored procedures, but there's no requirement it remain so, and no requirement you be a PHP expert.  We're very interested in fully transitioning to Go and a microservices architecture, so we'd highly value someone who is familiar with the transition.  
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2) VP Engineering -- 
Our team is growing rapidly (and 50% engineering), and we're looking for an engineering leader with a people-first philosophy.  We're looking for someone with a track record of snipping great products and who can build great organizations where engineers love to work.
<a href="
Ask HN: Who is hiring? (June 2015)