magento installation / customisation

**Magento Experts only please - I will only look at bids that answer the questions in my specification** I am looking for someone who is an expert on magento commerce to integrate it into a job board system we are upgrading. I am looking for a 'lite' install i.e. we only need about 5 digital products and admin setting up, we don't need any of the CMS features (product pages are basically hardcoded), shipping etc. I need to integrate it with a web application that is being built on CodeIgniter framework. Therefore I assume we need to use Magento's web services API to pull the products/add to cart etc, the idea is seamless integration and working with the look + feel we have developed. The shopping cart needs to be templated to the design we are using (we have the PSDs), and coupon codes need to work. I require integration with Worldpay (uk payment processor), initially using their 'select invisible' method - which a module is available on Magento Connect. There may be some additional customisation work required here beyond the initial integration which can be priced up separately. I don't forsee any features required, but I would like to work with someone who knows the featureset well and can recommend anything we may require. You should be an experienced developer, have good spoken english and be able to work fast and efficiently. Please mention your background, your experience with Magento, along with any examples would be great.