Ongoing Web Project Development Tasks

I want to setup an ongoing outsourcing arrangement with a small group of programmers / developers / marketers (depending the work at hand) to perform various tasks. We're expecting to build-out a number of affiliate sites, membership sites, and some client projects this year -- and need some help. Work can be hourly or task-based, but we prefer a fixed cost for a specific assignment. There will be a mixed bag of tasks in any given time, it's somewhat unpredictable, but ongoing. Fast turnaround and clear communication in English is essential. We're are looking for thoughtful, competent work that does not require us to test out each little bit of functionality -- that's your job ;-). A bit of design style and marketing sense would be particularly welcome. We're a Internet publishing / marketing company -- everything we do is somehow related to marketing and selling a product or service. We prefer to work with a group of individuals or outsourcing company with various skills rather than one individual, knowing that people get sick or are on vacation from time to time, and that a group will have a broader skill set than an individual. Here are some typical tasks . . . - WordPress installs - WordPress template modification: colors, layouts, adding plug-in components, usually not anything extensive - CSS tweaks to match other sites; for example, editing the CSS of a WordPress blog or standard HTML site to match the look of a shopping cart, or matching a blog theme to an HTML site. - Setting up shopping cart backend functionality. Mostly [login to view URL] or Volusion.com. - Develop HTML forms for specific purposes, either hand-coded, or generated by a tool like FormBoss - Converting audio and video into specific sizes and formats. We will provide the specifications and preferred method. - Setting up and adjusting navigation / menu systems. This are usually either WordPress themes or Project Seven menus (for standard HTML sites.) - Miscellaneous Javascript coding, usually small add-on features. - Setting up autoresponders ([login to view URL] or [login to view URL]) - Occasionally, entire site development projects, usually WordPress, HTML, or a hybrid. We have two of these right now. - Setup the backend of membership software on the sever, instruction will be provided. - Keyword research