I need a database programmer to migrate data client matter files with associated documents from our existing legal case management system which is on premise server to a cloud hosted environment and new case management system

We are a law firm based in Port Talbot South Wales we employ around 40 staff members. We work via a legal case management system which we are retiring and moving to a cloud based case management system. We need to take around 18000 archived client matter to the new system via csv file format and the same for around 1000 live client matters. We also require the creating of our database by inputting our staff, billing rates, workflows, templates, forms etc. We are moving from Mattersphere case management to Osprey Approach.