Improve a social network built in Drupal 6

Hi, Here we work on a project that consists in building a Drupal social network for marketing professionals. Quite simple to understand, not that easy to achieve ... We already built and are actively using: managed groups (OG), user-friendly timelines in each group (Facebook status), ticket system (at the moment used to follow the project) ... You would contribute in adding the following features: digests per email (half done), great search and better UX in general, possibility to attach files to comments, correct some bugs. For this purpose we are seeking a Drupal 6 freelance expert (or very used freelance developer) that would speed up the implementation of these last features, working through skype and emails along with me (quite beginner Drupal developer). We estimate that this is a one-month job for such a duo team, and the contract won't probably exceed this duration. To apply, you must be fluent in either English or Spanish (also French, possibly), and you must be able to show us at least one active Drupal (6+) website you worked on. Runtime conditions are to prove to be responsive by skype and emails during the accorded timetable (at least half the office's opening time), to have very good Drupal 6 skills, and to use them to achieve the quoted goals. The client company is a major Spanish Online Marketing consultory based on Madrid. The company is growing fast and lately opened offices in several other countries :) For furter information, and to apply, please contact me by email, private message or by phone (depending on what's shown on the website). Our need is urgent so collaboration is to start as soon as possible. Looking forward to working with you, Alexandre Sonderer (main developer)