TechEmpower - Los Angeles area, California (El Segundo, near LAX)
You may recognize us from the Web Framework Benchmarks that have been discussed on HN periodically: <a href="http://www.techempower.com/benchmarks/" >
We don't want ninjas and rockstars, just good developers
We hire people, not skill sets. If you're a smart, motivated developer who likes our company culture, let's talk.
Over the past 16 years we've cultivated a great group of people to work with. Our developers are smart, thoughtful, respectful to each other, opinionated, dedicated, and fun. We don't hire often, and when we do, we value these qualities as much as technical abilities.
Founded by a former computer science professor, in many ways we keep the same feel as a small computer science lab (without the long hours):
    Challenging and varied projects
    Informal, comfortable environment
    Intelligent, engaged people
    Lively, respectful technology discussions
    Frequent mentoring
    Easy camaraderie
    General culture of helpfulness and friendliness 

Teams at TechEmpower are typically between 2 and 6 people. Because of the small size of our teams, we need developers able to work on all aspects of an application ("full stack" developers). We rely on individual developers to do much of the software design, with guidance and discussion, and actively work to improve each other's technical capabilities.
On average, a typical developer will get exposure to 3 or 4 different projects over the course of a year. Since each project has a different technology stack, developers gain varied experience over time and never stop learning.
We pride ourselves on doing the best work we can for our clients. This means working with them to really understand what they need built, carefully planning how to do it, and delivering what we promise while maintaining a sensible work/life balance. We build quality applications and have fun doing it.
Also, we enjoy programming on high-performance workstations with 4K displays. A lot of code fits in 3840x2160 pixels!
The technologies we use vary over time with our mix of projects. Here is a snapshot of the technologies we use at the moment:
    Languages: Java, JavaScript, Python, C#, Ruby, PHP
    Tools: Git, Jenkins (Continuous Integration), Sonar (static code analysis), Eclipse, IntelliJ, Ant, Maven
    Web: Dropwizard, .NET MVC 5, Play, Django, Rails, Mustache, Handlebars, Backbone, Angular, Knockout, JSP, Servlets, jQuery, etc.
    Mobile: iOS, Android, PhoneGap
    Hosting: AWS (EC2, RDS, etc.), Rackspace Cloud, Linux deployments
    Data Persistence: ORM (Hibernate, etc.), MySQL, Postgres, MS SQL Server, NoSQL (Redis, MongoDB) 

We don't expect new hires to have experience with all of these, but developers at TechEmpower can expect to expand their skillsets with most of these over time.
If this sounds like the kind of place you'd like to work, please apply here: 
<a href="http://jobs.techempower.com/hn" >
Ask HN: Who is hiring? (July 2014)