Mindrift is seeking a Freelance Mechanical CFD Engineer to help train and evaluate AI agents on expert-level fluid simulation tasks. Responsibilities include handling CAD geometry, setting up and running simulations, building reference solutions, and writing Python validation checks. Candidates need a relevant engineering degree, hands-on CFD experience (e.g., OpenFOAM, ANSYS Fluent, or STAR-CCM+), Python proficiency, and at least B2-level English.