Mindrift is seeking a freelance Mechanical CAD & Simulation Engineer in the United States to train and evaluate AI agents performing complex CAD engineering tasks. Candidates must have at least 5 years of professional hands-on CAD modeling experience, their own active professional CAD license, familiarity with Python and GitHub, and B2+ English proficiency. The role is fully remote, offering flexible hours of around 10–20 hours per week during active project phases.