Mindrift is seeking a Freelance Mechanical CFD Engineer to help train and evaluate AI agents on expert-level fluid simulation tasks, including running simulations and writing Python checks. Candidates need a relevant engineering degree, hands-on CFD experience with tools like OpenFOAM or ANSYS Fluent, Python and GitHub familiarity, and English at a B2 level or above. The position is open to applicants in Brazil, Argentina, Colombia, Chile, Mexico, and Peru.