BambooInvoice / Codeigniter specialist

For a project I seek a coder that can do some changes to the BambooInvoice system (PHP). ([login to view URL]) It's important that you have knowledge of Codeigniter (the framework bambooinvoice uses). In the future I need additional improvements of the system. ## Deliverables I need the following adaptions to the existing Bamboo Invoice System: - Possibility to add costs with attachment -- Name of costs -- Description of costs -- Date of costs -- (PDF) attachment -- Price of costs - Show existing report function including costs - Add off the shell products to create invoice selecting products -- Possibility to create, edit and delete products -- When creating invoice possibility to select product BambooInvoice is released under the GPL license. But when developing you have to sign a NDA, so this addaptions will NOT be distributed.