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Hiring now · posted 3d ago Health Contract · On-site / hybrid

Clinical / Health Domain Expert

$90–$150/hr

Published pay. The final rate depends on your test, experience and country.

United States Language: English Posted 9 Nov 2026

Clinical / Health Domain Expert is AI-training work for doctors, paying $90–$150/hr, open to applicants in United States. Posted 9 Nov 2026, still open on 13 Nov 2026. Zekai lists it for free; the application goes to the employer's platform.

About this role

Preparing for this role? See the best AI tools for doctors, practise with ready-made prompts for doctors, read Best Free AI Tools for Doctors: What's Actually Free in 2026 and take the free 30-day AI challenge.

Join a leading AI lab's cutting-edge GenAI team to be at the core of the AI revolution, where your expertise fuels the development of the most advanced Large Language Models.

1. Overview

Join a leading AI lab's cutting-edge GenAI team and help build foundational AI models from the ground up. We're seeking talented licensed Clinicians and Health subject-matter experts (SMEs) with clinical expertise and active licensure in medicine, nursing, pharmacy or allied health to bring deep clinical domain expertise and elevate the quality of our AI training data.

This is a W-2 employment position with Cincinnatus LLC, with the opportunity to be placed at a leading AI Lab as part of their extended workforce.

2. Key Responsibilities
  • Guide research and engineering teams to close knowledge gaps and improve AI model performance in clinical medicine and health, diagnosis and treatment, and patient communication and clinical guidelines topics.
  • Design challenging, domain-relevant tasks, and write accurate and well-structured solutions to clinical medicine and health problems.
  • Evaluate clinical medicine and health tasks and solutions and provide clear, written technical feedback.
  • Write realistic clinical cases and questions and produce accurate, guideline-based reference answers.
  • Develop rubrics to assess clinical accuracy, safety and appropriateness of AI-generated health information.
  • Collaborate with other subject matter experts to ensure consistency and accuracy in training data.
3. Core Qualifications
  • 3+ years of dedicated post-training clinical practice at a recognized hospital, health system or clinical organization.
  • Active, unrestricted US license as an MD, DO, NP, PA, RN or PharmD.
  • Board certification or specialty credentials are a strong plus.
  • Demonstrable career progression.
  • Ability to engage reliably for at least 20 hours/week during weekdays.
  • Strong written communication skills and the ability to explain complex technical decisions clearly.

About Cincinnatus LLC: Cincinnatus LLC is an enterprise staffing company that partners with leading technology companies to source and employ highly skilled professionals for contingent and contract-based opportunities. 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.

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.

Location: United States.

How applying works

  1. Click Apply now and enter your email.
  2. You go straight to the application. We email you a copy of this role and your link.
  3. Most platforms ask for a CV and a short skills test or AI interview in your field.
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Your plan for “Clinical / Health Domain Expert”

What to know before you apply

Pay
At the published rate, 10 hours a week would be about $900–$1,500 and 20 hours about $1,800–$3,000 before tax. Hours depend on the project, so treat this as a ceiling, not a promise.
Location
Only applicants located in United States can be paid for this role. Platforms usually verify where you are, so apply only if you are based there.
Credentials
The listing asks for a medical degree, 3+ years of experience. Put it in the first line of your profile: reviewers screen for it before anything else.
Test tips for doctors
  • Lead every review with patient safety: flag dangerous dosing, missed red flags and contraindications first.
  • Cite the guideline you rely on (WHO, NICE, specialty society) when you correct the AI.
  • Keep answers at the level of a specialist colleague, not a patient leaflet, unless the task says otherwise.
Prepare free with Zekai

3 steps to stand out as one of the best doctors

  1. 01

    Know the AI tools doctors use

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  2. 02

    Practise with real prompts

    Many tests ask you to write or judge prompts in your field. Practise on these first.

    Justify an E/M Level

    Based on the 2023 E/M guidelines, create a summary of the Medical Decision Making (MDM) from the provided clinical note to support a [[e.g., 99214]] level of service. RULES: 1. Extract and list the number and complexity of prob…

    Draft a Peer-to-Peer Appeal

    Create a script with key talking points for a peer-to-peer review to appeal a denial for [[Procedure/Medication]]. Use ONLY the information from the provided clinical notes. RULES: 1. Start with a one-sentence summary: "I am ca…

    Prompt library for doctors →
  3. 03

    Take the free 30-day AI challenge

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    Guides for doctors

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