Requirements: 3+ years experience working on a commercial Python and JavaScript application from design to deployment Experience optimizing and scaling web applications Previous experience with a startup company E-commerce and relevant security experience A good eye for UI design using CSS A passion for testing and strong knowledge of software engineering best practices A self starter, able to work in a growing and evolving company A B.S. in Computer Science or a related field Qualifications: You're self-driven, motivated, and can manage time and tasks well on your own You test things prior to committing changes and don't just depend on a big QA team to find problems with your code You're an expert debugger and can solve any issue You know that anything is possible and approach problems with that mindset, and don't just say 'no' because something's too much work Excellent communication and collaboration skills You don't get worked up easily and can handle the pressure of jumping between multiple tasks. Additional Skills: Expert knowledge of Django, Django template tags, filters and everything in between Experience building complex web applications in Javascript, jQuery or similar Experience with MathML, Mathjax or other methods of parsing/rendering math/science notation in a browser Experience with LaTeX Experience with Sproutcore HTML5 framework Familiar with Mercurial and have experience navigating a Unix system Experience integrating and leveraging third-party software and code for use in custom web applications.