PhD Physicist AI Trainer — Remote Part-Time

About OpenTrain

OpenTrain is the #1 platform for finding and building careers in AI training and data labeling. The platform helps people discover projects, build a unified training portfolio, and grow a durable freelance career contributing the human expertise behind modern AI systems.

AI training is the human side of building models: people annotate data, rate model outputs, and provide expert feedback that shapes how AI understands complex domains. The work is remote, flexible, and a direct way to influence state-of-the-art systems.

About This Role

OpenTrain is recruiting PhD-level physics experts to contribute advanced subject-matter expertise to an AI development project. You will create and vet technical physics content that helps train and evaluate models, ensuring scientific accuracy and clarity.

This is a remote, contractor, part-time role with a time expectation of 20+ hours per week. The position pays between $80 and $90 per hour (USD) and requires fluent English.

• Employment type: Contractor, Part-time
• Time: 20+ hours per week, flexible scheduling
• Pay: $80–$90 USD per hour
• Location: Remote — worldwide; English required
• Data: Text-based tasks (evaluation and data collection)

What You'll Do

Your primary focus is applying deep physics knowledge to improve training data and model outputs. Work will include creating, reviewing, and refining technical materials as well as evaluating model responses for scientific correctness and clarity.

• Analyze and evaluate real-world physics data, concepts, and scenarios to improve AI training.
• Generate, review, and refine advanced physics problem sets and technical content.
• Provide expert scientific feedback on complex questions and model outputs for technical accuracy.
• Translate intricate theories and phenomena into accessible explanations for AI interpretation.
• Collaborate with stakeholders to align deliverables with evolving project goals.
• Participate in QA by identifying gaps in training data and recommending improvements.

Requirements

Candidates must meet the core academic and professional qualifications below. We will verify that applicants hold the stated credentials.

• Doctorate (PhD) in Physics from an accredited institution (required).
• Extensive background in advanced physical sciences, including theoretical and applied physics.
• Excellent written and verbal communication skills for explaining complex scientific topics.
• Strong analytical and problem-solving skills relevant to scientific research.
• Availability for 20+ hours per week and ability to work remotely in English.

Helpful Background (Nice to Have)

These additional experiences are not required but will help you succeed and move faster in the role.

• Experience developing or reviewing educational or technical physics materials.
• Interest in or familiarity with AI, data science, or digital training environments.

How the Work Is Delivered

Tasks are text-based and include evaluation ratings and data-collection activities. The project uses a labeling platform listed as 'OTHER' — you will receive onboarding and instructions specific to that tool.

As a contractor, you will track hours and submit deliverables per project guidelines. Create an OpenTrain profile to apply, showcase your PhD and relevant experience, and manage communications and applications in one place.

• Label types: Evaluation/rating and data collection on text data.
• (project-specific tool; onboarding provided).
• Application: Apply via your OpenTrain profile and include PhD verification and examples of relevant work.