Mercor · STEM & research
Physics - Research Collaborator
Listed on Mercor as “Physics - Research Collaborator”
What this actually is
You design problems that stump current AI models, evaluate AI reasoning against the correct answer, write rubrics, and provide expert feedback. Often the highest-paid category because the expertise pool is small. The platform title (Physics - Research Collaborator) reflects the rate band and the expertise required, not the day-to-day work.
Can you do this on your visa?
F-2 / F-4 / F-5 / F-6: open. E-1 to E-7: needs concurrent-employment permit. D-2 / D-4 students: S-3 permit, 20 hr/week cap. D-10 / D-8: case by case.
Korean tax on USD income
First 5 years in Korea: foreign-source income only taxed if remitted into Korea. After year 5: worldwide income. Full tax guide.
Original posting from Mercor
Join a leading AI lab’s cutting-edge research team to be at the core of the AI revolution, where your expertise fuels the development of the most advanced LLMs.
**1\. Role Overview**
We are seeking advanced Physics Researchers & PhD Students to contribute to a project supporting a frontier-model evaluation effort focused on physics reasoning and problem-solving. You'll design and validate challenging benchmark tasks to help surface and diagnose reasoning gaps in a target model. The work centers on building robust, real-world physics tasks with verifiable solutions and then analyzing model behavior.
**2\. Key Responsibilities**
- Design challenging, real-world physics problems spanning areas such as classical mechanics, electromagnetism, quantum mechanics, thermodynamics, statistical mechanics, and other physics subfields.
- Prepare all necessary components, including detailed problem statements, golden solutions, and evaluation criteria.
- Evaluate the model's performance on the tasks.
- Identify tasks where the target model fails, specifically classifying failures in physics reasoning and mathematical derivation.
- Analyze model trajectories to observe and extract core capability loss patterns.
**3\. Core Qualifications**
- Currently enrolled in or recently completed a PhD program in Physics or a closely related field (e.g., Astrophysics, Applied Physics, Condensed Matter) at a top-tier university.
- Deep expertise in one or more subfields of physics, with strong mathematical and analytical skills.
- Ability to write clear, rigorous, and well-structured physics problems and solutions.
- Verbal and written communication skills, problem-solving skills, and the ability to work independently.
- Ability to engage reliably for 8+ hours/week.
**4\. More about the Opportunity**
- About Cincinnatus LLC: Cincinnatus is an enterprise staffing company that partners with leading technology companies to source and employ highly skilled professionals for full-time and long-term contingent roles. Cincinnatus serves as the employer of record for these engagements, providing W-2 employment, payroll, benefits, and compliance, while placing employees directly within client teams to work on high-impact initiatives.
- Applicants must be located in the United States with eligible work authorization.
Quoted from Mercor’s public listing on 2026-06-02. We don’t edit platform copy; honest framing is in the title and the “what this actually is” block above.
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About Mercor
AI-interview-based talent network. One application, voice interview with their AI, then matched to projects across coding, research, and specialist work. Pay scales with track and seniority.
Mercor review: AI-interview talent network
4.1/5 on Glassdoor, fastest-growing platform in the category (+509% YoY). What the AI video interview actually asks, real pay across coding/research/medical/legal/finance tracks ($25-$200/hr), and the project-availability problem.
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