Principal Engineer / Professor
OpenTrain AI$85–$185 per hour
100% remote
Part-time
Fully flexible schedule
Create and evaluate difficult engineering and physical science problems that test AI systems against real technical constraints, on your own schedule.
AI companies need principal-level engineers, scientists, and faculty to design problems that show whether an AI system can reason through real technical work. You will build realistic scenarios with supporting data, provide a correct solution, and set standards that let another expert check the result. This is that work, done remotely around your schedule.
What you'll do
• Create demanding questions in your engineering or physical science specialty, with real constraints and supporting data
• Provide a correct solution and explain the reasoning so another expert can verify it
• Set clear standards that let reviewers make consistent correctness decisions
• Review submitted problems for technical accuracy and flag work that cannot be graded reliably
Why this is worth your time
• Get paid $85–$185 an hour
• Apply principal-level judgment across aerospace, semiconductors, manufacturing, industrial engineering, materials science, or another relevant area
• Work directly on AI training tasks by writing solutions, defining correctness, and evaluating technical work
• Fully remote and flexible, no fixed shifts, no commute
Who this is for
• A PhD or master's degree in engineering, physics, materials, or another closely related field
• Hands-on principal, staff, or fellow-level work at a major engineering organization or government research lab, or a faculty appointment at a leading university
• Deep expertise in one or more relevant engineering or physical science specialties
• Technical judgment and clear communication, with the ability to validate proposed solutions
• Professional fluency in English
• Helpful evidence includes publications, patents, or technical leadership that demonstrates practical ownership of complex technical or scientific work
No AI experience needed.
Pay and details
• $85–$185 hourly under an independent-contractor arrangement
• Part-time, fully flexible schedule; fully remote, United States
How to apply
1. Apply on OpenTrain with your resume.
2. Complete the application on the hiring platform.
3. If shortlisted, take a short AI interview.
Ready to design difficult technical problems, write verifiable solutions, and review the work used to evaluate AI? Apply today.
About OpenTrain AI
OpenTrain AI connects experienced professionals with paid, part-time AI training work: shaping and improving the AI systems that companies are building right now.