I have an existing, established ecommerce website that I'm looking to improve and add features to.
Knowledge of these technologies is a necessity.
It would be a bonus if you have experience with design patterns, writing unit tests, and working with legacy codebases. Writing clean code, and improving the existing codebase, is a high priority - we anticipate using this system widely and want to be building it up in a maintainable way. You'll be working with at least one other developer on this.
I want this to be a fairly regular arrangement, so please let me know your expected weekly rate and why you're the right choice. Alternatively I can give you a set of tasks that I think would take a week and you can quote me how much they'll cost.