This job post has expired on November 21, 2025. It is likely that the position has already been filled.
Scientific Physics Labeling Expert at Mercor
posted 11 months agoScientific Physics Labeling Expert | $50–60/hr | Remote in US | Part-Time (30 hrs/week)
Mercor is seeking PhD holders, doctoral candidates, and outstanding Master's graduates in physics and related disciplines to join a high-impact AI research initiative in partnership with a leading artificial intelligence lab. This position focuses on evaluating and advancing large language models (LLMs) by applying deep expertise in theoretical and applied physics to assess model reasoning, accuracy, and depth across advanced physical science domains.
Key Domains
- Electromagnetism and Photonics
- Thermodynamics
- Optics and Acoustics
- Theoretical Optics and Mechanics
- Statistical Mechanics
- Atomic and Molecular Physics
- Solid State Physics and Semiconductor Physics
- Fluid Physics
- Astrophysics and Cosmology
- Biophysics
- Electrical and Mechanical Engineering
- Control Theory and Control Engineering
Key Responsibilities
- Evaluate scientific correctness, conceptual rigor, and depth of LLM-generated responses across physics and engineering topics
- Review outputs involving mathematical modeling, experimental methods, and theoretical frameworks in physics
- Identify factual errors, reasoning flaws, and conceptual misunderstandings in model outputs
- Benchmark model performance on advanced physics and applied engineering problems
- Work independently and asynchronously using proprietary evaluation tools
Requirements
- PhD (or PhD candidate) in Physics, Applied Physics, Electrical or Mechanical Engineering, or a closely related field
- Strong command of graduate-level physics and mathematical reasoning
- Excellent written communication and analytical abilities
- Ability to work independently in a remote, asynchronous setting
- Proficiency in Python for scientific analysis or model evaluation preferred
Role Details
- Part-time position (30 hours per week)
- Remote and asynchronous work environment
- Flexible schedule to accommodate global contributors
- Contractor position via Mercor
- Weekly payments through Stripe Connect
About Mercor
Mercor is a San Francisco-based company connecting top professionals with leading AI initiatives. Investors include Benchmark, General Catalyst, Adam D'Angelo, Larry Summers, and Jack Dorsey.
How to apply for this role
- Upload your resume — keep it up-to-date and in English. Mercor will auto-fill your profile from it.
- Complete the AI interview — a 15-minute conversation about your experience. Be ready to discuss specific projects and challenges you've solved.
- Submit your application — only about 20% of applicants finish all the steps, so completing yours puts you well ahead.