Our domains

Six domains, deep not wide.

Who is in the network for each domain, the degrees they hold and the work we staff.

Software engineering · Machine learning & AI · Science & STEM · Finance & accounting · Medical & health · Legal

019,200+experts

Software engineering

Working engineers who ship production code. They write and review agentic coding tasks, repo-level bug fixes and terminal environments a model has to solve.

Degree coverage

  • 2,900+ computer science degrees
  • 1,500+ computer engineering or IT degrees
  • 5,700+ with Python, 4,900+ with JavaScript or TypeScript, 2,300+ with C or C++

Work we staff

Agentic coding tasksTerminal and repo environmentsCode review and grading

Typical engagements

  • Agentic coding tasks built on real repositories, with tests that decide pass or fail.
  • Terminal environments with verifiers, stress-tested against shortcut solutions.
  • Review and grading of model-written code against a rubric you agree with us.
025,700+experts

Machine learning & AI

ML engineers and data scientists who know how models fail. They design evaluations, write rubrics and audit training data and pipelines.

Degree coverage

  • 2,000+ with ML, AI or data science titles or degrees
  • 2,900+ in LLM evaluation, RLHF and red-teaming
  • 1,900+ in deep learning (PyTorch, TensorFlow), 1,500+ in computer vision

Work we staff

Eval and benchmark designRubric writingTraining data review

Typical engagements

  • Evaluation and benchmark design with a written quality bar.
  • Rubrics that turn expert judgment into criteria a grader can check.
  • Audits of training data and model pipelines.
034,200+experts

Science & STEM

Researchers and engineers across the hard sciences, including specialists for safety review in sensitive scientific fields.

Degree coverage

  • 830+ engineering, 470+ mathematics & statistics
  • 290+ chemistry, 300+ life sciences, 190+ physics
  • 250+ with published research, 460+ in simulation and scientific computing

Work we staff

Step-by-step reasoningHard problem designScientific safety review

Typical engagements

  • Step-by-step reasoning in physics, chemistry, mathematics and biology.
  • Hard problems with worked answers that can be checked.
  • Safety review of chemical, radiological and energetics questions.
041,900+experts

Finance & accounting

Analysts, accountants and finance professionals who can check a model the way a reviewer checks a junior's work.

Degree coverage

  • 420+ finance or accounting degrees, 220+ economics
  • 200+ MBAs and chartered professionals (CPA, CFA, ACCA)
  • 310+ in financial modeling and valuation, 570+ in accounting and audit

Work we staff

Financial modelingStatement analysisDecks and deliverables

Typical engagements

  • Financial models and statement analysis that a reviewer can check line by line.
  • Grading of model answers on valuation, accounting and reporting.
  • Decks and deliverables built the way an analyst would build them.
051,100+experts

Medical & health

Clinicians and health professionals for work where a wrong answer has consequences.

Degree coverage

  • Licensed physicians (MD, MBBS or DO)
  • Nurses, pharmacists, dentists and allied health professionals
  • Clinicians in active practice

Work we staff

Clinical reasoningMedical QASafety review

Typical engagements

  • Clinical reasoning and diagnosis tasks written by clinicians.
  • Medical QA with answers checked against sources.
  • Safety review of health answers.

Counts are experts whose resume shows a degree, a role or real experience in the domain, or who applied in it, so one person can count in more than one domain. Degrees count only when completed. Counted from their resumes as of November 2026; every figure is rounded down.

Need a field?

Don’t see your field? Ask us.

We recruit to order. Tell us the expertise, languages or data you need and we’ll tell you straight whether we can staff it. We already run multilingual, video and specialist projects outside these six.

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