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Mercor

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. Roles hired through Cincinnatus are not project-based or freelance engagements. They are structured, role-based positions that typically involve full-time or fixed-term commitments, close collaboration with a client's internal teams, and integration into standard enterprise workflows. Cincinnatus is a legal entity separate from Mercor. While opportunities may be discovered through Mercor's platform, employment, onboarding, payroll, and benefits for these roles are administered by Cincinnatus. Equal Employment Opportunity Cincinnatus is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or any other legally protected characteristic. Cincinnatus is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans throughout the job application process.

Research Scientist – Chemical Sciences

Research ScientistResearch ScientistContractRemoteMid Level

Location

United States

Posted

2 days ago

Salary

$73 / hour

Seniority

Mid Level

LLMRLHFdata annotationmodel evaluation

Job Description

Role Description

  • Write and refine prompts to guide model behavior in chemistry contexts.
  • Evaluate LLM-generated responses to chemistry-related queries for scientific accuracy and quantitative reasoning.
  • Conduct fact-checking using authoritative public sources and domain knowledge.
  • Annotate model responses by identifying strengths, areas of improvement, and inaccuracies.
  • Assess clarity, structure, and appropriateness of explanations for different audiences.
  • Apply consistent evaluation standards by following clear taxonomies and benchmarks.

Qualifications

  • PhD in Chemistry or a closely related field
  • Deep expertise in Organic & Biological Chemistry, Inorganic & Materials Chemistry, Physical & Theoretical Chemistry, or Analytical & Instrumental Chemistry
  • Significant experience using large language models (LLMs)
  • Excellent writing skills and strong attention to detail
  • Experience reviewing or editing technical or academic writing
  • Prior experience with RLHF, model evaluation, or data annotation work (preferred)
  • Experience teaching or explaining chemistry concepts to non-expert audiences (preferred)
  • Familiarity with evaluation rubrics or structured review frameworks (preferred)

Company Description

Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo, Larry Summers, and Jack Dorsey.

Job Requirements

  • PhD in Chemistry or a closely related field
  • Deep expertise in Organic & Biological Chemistry, Inorganic & Materials Chemistry, Physical & Theoretical Chemistry, or Analytical & Instrumental Chemistry
  • Significant experience using large language models (LLMs)
  • Excellent writing skills and strong attention to detail
  • Experience reviewing or editing technical or academic writing
  • Prior experience with RLHF, model evaluation, or data annotation work (preferred)
  • Experience teaching or explaining chemistry concepts to non-expert audiences (preferred)
  • Familiarity with evaluation rubrics or structured review frameworks (preferred)

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