Mountain View/Sunnyvale, CA
Aarki is a mobile advertising network, working closely with mobile developers to provide more relevant advertising with a better user experience. For us more relevant advertising means people can get great applications for free and see only a small amount of interesting ads, and developers can get paid for their efforts.
We are still a very early stage startup, so small team, compelling equity offerings, diverse and interesting problems to work with.
Looking for:
1) frontend developers to do a lot of advanced development in JS for mobile phones 
<a href="http://aarki.com/jobs#javascript_mobile_engineer" >http://aarki.com/jobs#javascript_mobile_engineer</a>
2) backend developers; we are mostly a Python shop but all backgrounds are welcome if you can find the right tool for new problems and solve them:
<a href="http://aarki.com/jobs#generalist_engineer" >http://aarki.com/jobs#generalist_engineer</a>
Emails sent to jobs-at-aarki.com will get directly to company founders.