Chemistry Reasoning Evaluator

About OpenTrain

OpenTrain AI is the hiring and contracting organization for this role. OpenTrain is the #1 platform for finding and building careers in AI training and data labeling, helping people start and grow careers teaching AI through meaningful project work.

• Worldwide opportunity with part-time contractor engagement
• Create an OpenTrain account for free and apply in minutes
• Work on projects that help shape how advanced AI systems reason and communicate

About AI Training Work

AI training is the human side of building artificial intelligence. Contributors review model outputs, write strong examples, and provide detailed feedback so AI systems can produce more accurate, useful, and reliable responses.

• Use specialized knowledge to evaluate and improve AI-generated content
• Work remotely with flexible scheduling around your availability
• Contribute to a fast-growing field at the cutting edge of technology

The Role

OpenTrain AI is seeking Chemistry Reasoning Evaluators to assess AI-generated responses across chemistry topics. You will judge correctness, reasoning depth, clarity, and scientific rigor while identifying subtle conceptual, methodological, computational, and safety issues.

This is an entry-level contract and part-time opportunity for candidates who hold or are pursuing a BS, MS, or PhD in Chemistry or a closely related chemical science. A Top-100 university is preferred. Compensation is $80 USD per hour.

• Role type: Part-time contractor
• Pay: $80 USD per hour
• Work location: Worldwide
• Primary language: English
• Availability: Minimum 17–20 hours per week; approximately 8 hours per day preferred during active sprints

What You'll Do

You will review chemistry responses using detailed evaluation rubrics and produce precise feedback that can guide AI model improvement. Your work will require careful checking of both final answers and the reasoning used to reach them.

• Review AI-generated chemistry responses for accuracy, depth, and clarity
• Identify errors in calculations, units, reaction mechanisms, and stoichiometry
• Evaluate thermodynamics, kinetics, spectroscopy, and analytical methods
• Check chemical claims against reputable public sources
• Assess safety considerations, assumptions, and methodological soundness
• Draft exemplar explanations and model solutions
• Rate and compare multiple responses consistently using detailed rubrics
• Apply dimensional analysis, unit checks, approximations, and uncertainty awareness

Requirements

You must hold or be pursuing a BS, MS, or PhD in Chemistry or a closely related field. You should have a strong foundation across general, organic, inorganic, physical, and analytical chemistry, along with good laboratory and safety literacy.

The role requires C1+ English, excellent scientific writing, clear step-by-step reasoning, and correct notation and units. You should be able to fact-check precisely, apply evaluation criteria consistently, and maintain meticulous attention to detail and reproducibility.

• BS, MS, or PhD in Chemistry or a closely related chemical science
• Top-100 university preferred
• Strong knowledge of general, organic, inorganic, physical, and analytical chemistry
• Clear scientific writing with rigorous, stepwise explanations
• Quantitative reasoning and strong dimensional-analysis skills
• Awareness of units, approximations, uncertainty, laboratory practice, and safety
• Ability to fact-check using reputable public sources
• C1+ English proficiency
• Availability of at least 17–20 hours per week

Preferred Qualifications

The following experience can help you succeed but is not required. Research, analytical writing, debate, or programming experience may be useful when assessing complex reasoning and explaining corrections.

• Research experience
• Analytical writing or debate experience
• Programming literacy, such as Python or Matlab
• LaTeX familiarity
• Prior data-labeling, RLHF, or AI model-evaluation experience

Qualification and Project Exams

Onboarding includes a paid 1–2 hour qualification exam and a paid 1–2 hour project exam. These assessments help establish readiness for the chemistry evaluation work before active project participation.

• Paid qualification exam lasting 1–2 hours
• Paid project exam lasting 1–2 hours
• Detailed rubrics guide the evaluation process

How to Apply

Apply through OpenTrain AI to be considered for this worldwide contract opportunity. OpenTrain accounts are free to create, and the platform supports people building flexible careers in AI training and data labeling.

• Review the role and submit your application through OpenTrain
• Highlight your chemistry education, scientific writing, research, and evaluation experience
• Be prepared to complete the paid qualification and project exams