I've been designing and building websites for almost 10 years, with an emphasis on frontends and the user experience.
As a developer, I'm a stickler for good coding practice and documentation. At the same time, I believe in taking a pragmatic approach to get things done quickly, which can sometimes mean tradeoffs here and there. I have found that a good foundational design allows for both goals to be accomplished.
What really sets me apart, though, is my ability to also design user interfaces. Put me on your team, and you'll shave time off the project schedule by not having designers and developers going back-and-forth. My first-iteration designs are elegant, simple, easy-to-use UIs which are also implementable in the time available, something few designers can promise.
As icing on the cake, I have a heavy background in math, physics, and numerical methods. If you have one of those projects that calls for such skills, I won't shy away from doing the real programming that most developers these days can get away with not knowing how to do.
I also have some specialized experience setting up video advertising using the OpenX/Revive Adserver. Every combination of online services needed to make this work is unique to a client, so it takes both experience and intuition to make the integration a success. I have done this for two past clients outside of oDesk, and I can make it work for you too.