Mindrift is seeking a freelance Mechanical CFD Engineer to help train and evaluate AI agents on complex fluid simulation tasks, including running simulations, building verified reference solutions, and writing Python checks. Applicants must have a relevant engineering degree, hands-on CFD experience with tools like OpenFOAM or ANSYS Fluent, Python and GitHub skills, and at least B2 English proficiency. The role is open to candidates in Serbia, Estonia, Malta, Bosnia and Herzegovina, Lithuania, and Latvia.