Mechanical Engineer, Part-Time AI Video Annotation - Remote (United States)

OpenTrain AI connects experienced professionals with paid, part-time AI training work that shapes and improves emerging AI systems. The Mechanical Engineer will review and annotate videos of robots, machines, tools, and physical tasks, validate annotations, and provide feedback on unclear or challenging cases to help AI understand the physical world.

Responsibilities:

• Review footage of robots working with machine parts, tools and equipment, including how their parts interact
• Label the objects, movements, actions and mechanical interactions shown as the footage progresses
• Check whether each annotation is accurate, consistent and complete, then compare it with project standards
• Identify labels that are wrong or hard to interpret, and provide direct feedback on challenging video cases

Requirements:

• Experience spanning at least two years in a related field, such as mechanical engineering, mechanical design, manufacturing or robotics
• Practical knowledge of how parts move and interact within physical systems, including mechanical components, tools and machines
• Good written English, strong attention to detail, and independent work from detailed instructions