Responsibilities:
- Taking directions from the UI Director, but being able to make complex decisions independently based on functional requirements
- Working with product managers to build visual mock ups of new and rejuvenated site features from wireframe models and technical specifications
- Participating in development meetings to drive product vision
- Being able to construct clear, guided, conceptual work, which demonstrates UX flow and user-case scenarios

Design Requirements and Skills:
- 2+ years of UI design and development experience required.
- Solid XHTML/CSS coding skills.
- Execute complete design process from wireframes to final implementation.
- Proven knowledge of Javascript and JQuery – We’re looking for some innovative UI here.
- Portfolio of online applications showing a good sense of usability combined with good layout and visual design.
- Comfortable working in Django templates or a similar template language.

How to apply
Send your resume to: careers@doublespring.com

You may recall that Django 1.4 Alpha was released in December, but as with all alpha and beta packages, it was not for production use.
We are eagerly awaiting the stable version so we can begin migration of our deployments sometime next week.

Note: Django 1.4 has dropped support for Python 2.4. Python 2.5 is now the minimum required Python version. Django is tested and supported on Python 2.5, 2.6 and 2.7

How do they manage to deliver this fantastic service without compromising on speed. How is FaceBook’s performance so good?

There’s no single reason, but a whole lot of reasons:

- Heavy usage of caching (APC and memcached), which drastically cuts processing time (30x faster!)

- Usage of HipHop, which converts PHP into C++ code (which is then compiled into much more efficient machine code than actual PHP).

- Facebook uses PHP and MySQL, but that’s not the only thing they use. For example, they use Erlang for their chat, Hadoop clusters for some of their storage. They also use our favourite programming language: PYTHON

- Facebook has data distributed across many, many servers. In June 2010, FB had 60,000 servers. (think that’s too much? Google had half a million… 5 years ago) And yes they own the data center!

- Facebook sends as little traffic as possible: they use static CDNs to deliver static content. Gzip to compress data. Cookies, Javascript, HTML – everything is cut back to reduce the number of bytes sent over the network. They use a technology they call “BigPipe”, which sends partial content rather than the whole page.

Requirements

- Be smart and be passionate.
- Technical proficiency with Python and Django.
- Technical proficiency in JavaScript.
- Experience with MySQL / PgSQL.
- Unix/Linux expertise.
- Experience with MVC design patterns and solid algorithm skills.
- 1 year of industry experience (or equivalent internship experience).
- B.E. in Computer Science or equivalent degree required.

How to apply
Send your resume to: careers@doublespring.com

While it is true HTML5 and CSS3 are both a work in progress and is going to stay that way for some time, there’s no reason not to start using it right now. After all, time’s proven that implementation of unfinished specifications does work and can be easily mistaken by a complete W3C recommendation. That’s wereProgressive Enhancement and Graceful Degradation come into play.

Experienced developers understand that CSS3 can be added to new projects with progressive enhancement in mind. This ensures that content is accessible while non-supportive browsers fall back to a less-enhanced experience for the user.