Mindrift is seeking a Freelance Mechanical CFD Engineer to help train and evaluate AI agents on expert-level fluid simulation tasks by running simulations, building verified reference solutions, and writing Python checks. Applicants must have a degree in Mechanical or Aerospace Engineering (or related field), several years of hands-on CFD experience with OpenFOAM, ANSYS Fluent/CFX or STAR-CCM+, familiarity with Python and GitHub, and at least B2-level English proficiency. The remote position is located in France and requires an estimated 10–20 hours per week during active project phases.