Mindrift is seeking a Freelance Mechanical CFD Engineer to help train and evaluate AI agents on expert-level fluid simulation tasks. Responsibilities include setting up simulations from CAD geometry, creating verified reference solutions, and writing Python verification checks. Candidates must have a relevant engineering degree, hands-on CFD experience (OpenFOAM, ANSYS Fluent/CFX, or STAR-CCM+), familiarity with Python and GitHub, and English proficiency at B2 level or above.