Applied Physics PhD - Assessment Expert - AI Trainer

Obsidian; Philadelphia (Philadelphia County); Remote; USD 32,000 - 52,000; Part time

Benefits offered by this job

Fully remote

Job summary

Obsidian is seeking expert physicists to author and review high-quality academic assessment content for an AI research initiative. You will craft rigorous multiple-choice questions across core physics domains, evaluate solutions, and help establish gold-standard benchmarks used to advance AI capabilities.

You will work asynchronously, fully remote, with a commitment of 10+ hours per week, and may specialize in one of two task types: question authoring or question verification, with strong

Qualifications

• PhD or doctoral candidate in Physics, Applied Physics, Astrophysics, or a closely related field.
• Strong command of graduate-level physics concepts and mathematical formalism.
• Experience with rigorous academic problem design or physics olympiad writing is a strong plus.
• Excellent written English and ability to express complex ideas clearly and concisely.

Responsibilities

• Author original physics questions that test deep conceptual understanding, not surface-level recall.
• Ensure questions are unambiguous, self-contained, and precisely defined — all necessary information must be in the problem statement.
• Rate each question's difficulty: Medium (intro undergraduate), Hard (advanced undergraduate), or Expert (post-graduate and above).
• Provide 1 correct answer and 9 plausible but subtly incorrect alternatives that challenge expert-level solvers.
• Write step-by-step Chain-of-Thought solutions with clear, concise intermediate steps in markdown format.
• Supply 1–5 academic references per question from reputable sources (peer-reviewed journals, university repositories).
• For verification tasks: flag issues with clarity, completeness, precision, or solvability and justify any edits made.

Education

PhD in Physics

Master's degree considered

Job description

Role Overview

We are seeking expert physicists to author and review high-quality academic assessment content for an AI research initiative. You will write and verify rigorous multiple-choice questions across core physics domains, evaluate solution quality, and help establish gold-standard benchmarks used to advance AI capabilities.

You will be assigned one of two task types:

• Question Authoring — Create original, challenging multiple-choice questions in your area of physics expertise, rate their difficulty, and submit them for review.

• Question Verification — Review pre-written questions for accuracy, clarity, and rigor. Edit where needed, rate difficulty, and document any changes made.

Physics Domains Covered

Semiconductor Physics, Nanoelectronics & Spintronics, Photonics, Quantum Optics & Ultrafast, Quantum Sensing & Metrology, Plasma Physics & Fusion Energy, Nonlinear Dynamics & Turbulence, Geophysics & Reservoir Simulation.

Key Responsibilities

• Author original physics questions that test deep conceptual understanding, not surface-level recall

• Ensure questions are unambiguous, self-contained, and precisely defined — all necessary information must be in the problem statement

• Rate each question's difficulty: Medium (intro undergraduate), Hard (advanced undergraduate), or Expert (post-graduate and above)

• Provide 1 correct answer and 9 plausible but subtly incorrect alternatives that challenge expert-level solvers

• Write step-by-step Chain-of-Thought solutions with clear, concise intermediate steps in markdown format

• Supply 1–5 academic references per question from reputable sources (peer-reviewed journals, university repositories)

• For verification tasks: flag issues with clarity, completeness, precision, or solvability and justify any edits made

Ideal Qualifications

• PhD or doctoral candidate in Physics, Applied Physics, Astrophysics, or a closely related field

• Master's degree considered for candidates with exceptional depth in a specific subdomain

• Strong command of graduate-level physics concepts and mathematical formalism

• Experience with rigorous academic problem design or physics olympiad writing is a strong plus

• Excellent written English and ability to express complex ideas clearly and concisely

More About the Opportunity

• Expected commitment: 10+ hours/week

• Asynchronous, fully remote work