Update Drupal CMS

We are looking for a web developer fully experienced at working with Drupal. We have an existing Drupal CMS which urgently needs updating. We would require your assistance on a ‘when needed’ basis. Individual must be reliable, fast, efficient and responsive when contacted. Our immediate request is adding Twitter feeds. We have the API details which need to be implemented. Should you prove successful in this requirement, we would contract you for all further updates (price quoted per task). Please contact me for full details.