Physics PhD - Relativity & Cosmology Expert at Mercor

Physics PhD Expert | $73.29/hr | Remote (US, UK, Canada, EU)

Join Mercor in shaping the future of AI by evaluating and improving how conversational AI systems understand and explain complex physics concepts. This flexible contract role allows PhD-level physicists to apply deep expertise in improving AI model performance across relativity, cosmology, and high-energy physics.

Why This Role Exists

Mercor partners with leading AI teams to enhance the quality and reliability of general-purpose conversational AI systems. In physics contexts, these systems must demonstrate strong theoretical grounding, quantitative rigor, and precise reasoning. Your expertise will directly improve how AI models explain and respond to physics-related questions.

What You'll Do

• Write and refine prompts to guide AI model behavior in physics contexts
• Evaluate LLM-generated responses for conceptual accuracy, mathematical correctness, and reasoning quality
• Conduct fact-checking using authoritative sources and domain expertise
• Annotate model responses by identifying strengths and areas for improvement
• Assess clarity, structure, and appropriateness of explanations for different audiences
• Apply consistent evaluation standards following detailed guidelines and benchmarks

Required Qualifications

• PhD in Physics or closely related field
• Demonstrated expertise in Relativity, Cosmology & High-Energy Physics
• Significant experience using large language models (LLMs)
• Excellent writing skills with ability to explain complex physics concepts clearly
• Strong attention to detail and ability to identify subtle issues
• Experience reviewing or editing technical or academic writing
• Fluent English language skills

Nice-to-Have Specialties

• Experience in Electromagnetism, Optics, Thermodynamics, Quantum Physics, or Classical Mechanics
• Prior experience with RLHF, model evaluation, or data annotation
• Teaching or mentoring experience with non-expert audiences
• Familiarity with evaluation rubrics or structured review frameworks

What Success Looks Like

You'll identify conceptual inaccuracies in physics-related AI outputs, improve the rigor and clarity of AI explanations, and deliver consistent evaluation artifacts that strengthen model performance. Your work will ensure AI systems are trusted in physics contexts.

Why Join Mercor

This flexible, remote role offers PhD-level scientists the opportunity to directly influence how advanced AI systems reason about complex scientific concepts. Apply your deep expertise beyond academia while contributing to high-impact AI development work.

Full-time or part-time contract work available. Geography restricted to USA, UK, Canada, and EU.