San Francisco, CA
Disqus
We're still only 20 people, so it's a terrific time to join our team, especially if you're interested in scaling problems (we serve over 500m uniques per month) or writing high performance third-party JavaScript (our commenting widget is installed on hundreds of thousands of websites).
More here: <a href="http://disqus.com/jobs" >http://disqus.com/jobs</a>
Ask HN: Who is Hiring? (September 2011)