Create Sync mechanism for SugarCRM & existing user database

Looking for a SugarCRM expert to create a synching mechanism between SugarCRM and an existing user database. When a new user record is added or updated in our mysql user DB, a matching record should be created/updated in the SugarCRM DB and vice versa. Our user information to be synced is stored in 3 different tables and include: user name, location, email, data/time he joined our site, email marketing preference and a custom field. We have identified a couple of ways of achieving this but are looking for someone to implement it. Bids with insights on how it would be implemented would receive higher consideration. Please make sure you also mention your average hourly rare as this is a continuous customization project. Thank you for taking the time to bid on this project.