Mindrift is seeking a Freelance Mechanical CFD Engineer based in the United Kingdom to train and evaluate AI agents on fluid simulation tasks. Candidates must have a degree in Mechanical or Aerospace Engineering (or related discipline), hands-on CFD experience with OpenFOAM, ANSYS Fluent/CFX or STAR-CCM+, familiarity with Python and GitHub, and B2-level English or higher. The role is fully remote, offering estimated project workloads of 10 to 20 hours per week during active phases.