The primary duty of validation engineers is testing. They establish validation standards, develop testing protocols, prepare equipment, document test results and maintain records for later analysis. They often need to coordinate with other personnel or departments who will be affected by testing.
Validation engineers compose reports and make adjustments to equipment or processes that require improvement. They could also decide if equipment needs to be repaired or entirely replaced. Other duties include preventative maintenance, maintenance of testing equipment and overseeing the inventory of validation supplies.