Mercor
Expert projects for AI labs across software, finance, law, medicine, science and languages.
Pay figures cover the 291 open jobs that publish an hourly rate in USD. They are published rates, not a guarantee of income. Last checked on October 8, 2026.
You apply on work.mercor.com: create a profile, complete a skills assessment, then get matched to projects that fit your background.
Official site: mercor.com. SideHustler is independent of Mercor.
This role asks practicing physicians to judge how well health AI models handle diagnoses, clinical reasoning and care plans. The work is part-time and asynchronous, aimed at MDs and DOs who currently see patients in primary care, internal medicine or hospital-based specialties.
Posted October 8, 2026
This short-term remote project asks practicing oncologists to test how frontier AI models reason through real-world cases, with a focus on clinical trial design, patient eligibility and treatment decisions. Contributors write challenging scenarios, judge model answers against current standard-of-care guidelines, and flag errors or unsafe advice. It suits clinicians with fellowship training and hands-on clinical trial experience who want to apply their expertise to AI research.
Posted October 8, 2026
Participants work on their own real projects using an AI coding assistant in a terminal while each session is recorded for an AI research organization. The role suits both experienced developers and non-coders who build with AI tools.
Posted October 7, 2026
This full-time role involves building, running and improving highly available cloud infrastructure, mainly on AWS and Kubernetes, for complex enterprise production systems. It suits experienced infrastructure, SRE, DevOps or platform engineers who can debug incidents, build observability with tools like Datadog, and work closely with software teams.
Posted October 7, 2026
This contract asks you to test how well AI-powered enterprise search and workplace assistants answer HR questions, scoring the quality of each answer and the sources behind it. It is aimed at experienced HR practitioners currently working in HR, People Ops, Payroll or HR Systems roles at technology companies.
Posted October 7, 2026
Mercor is seeking experienced Administrative Services Managers to evaluate and improve cutting-edge AI systems. You will analyze content and administrative workflows generated by AI, drawing on your operational expertise in planning, coordination, and management of organizational support services such as facilities, document management, procurement, and office operations. This role involves qualitative evaluation of administrative artifacts and improvement recommendations based on your business experience.
Posted October 6, 2026
This is a paid evaluation role for database engineers who will design realistic tasks that test how well AI agents handle database work. Each task is a self-contained problem with a reproducible environment, a working reference solution, tests, and grading criteria that separate robust engineering from code that only looks correct. It is aimed at experts with deep database-engine internals experience, not at DBA, SQL analytics, or ETL-only profiles.
Posted October 6, 2026
Mercor is recruiting experienced private investigators to evaluate and improve advanced AI systems. You will examine content and workflows generated by AI in the investigations domain, drawing on your real expertise in gathering, analyzing, and reporting facts related to legal, financial, and personal matters. This role is for professionals with a minimum of four years of investigations experience.
Posted October 6, 2026
Are you a property or condominium manager with at least four years of experience? Mercor invites you to evaluate content and processes generated by artificial intelligence in the field of property and resident association management. You will leverage your on-the-ground expertise to assess the quality, regulatory compliance, and operational feasibility of solutions proposed by AI.
Posted October 6, 2026
Evaluation of AI model outputs against correctness, maintainability, security, and production readiness criteria, accessible to early-to-mid career professionals.
Advanced evaluation of AI model reasoning on complex systems: design of expert engineering solutions, evaluation rubrics, reference implementations.
Evaluation and comparison of AI model solutions on realistic software engineering tasks: debugging, cross-repository logic tracing, feature implementation, code review, architecture decisions.
Deep expertise in network engineering, legacy/enterprise systems and advanced programming languages (CUDA, C++, Rust, MLOps, COBOL, ABAP, Scala, Kotlin, OCaml).
You will compare images generated by artificial intelligence based on the same prompt and designate the most successful image. This qualitative evaluation role requires careful analysis according to several criteria (faithfulness to the prompt, visual quality, anatomy, rendered text, artifacts) and the writing of a concise justification for your choice.
Posted October 3, 2026
This role involves evaluating and improving how AI models respond to sensitive conversations about relationships, emotional well-being, and personal beliefs. You will analyze whether the model's responses remain balanced, neutral, and safe, and you will help researchers define quality standards. This role is suited for professionals from mental health, counseling, or social work who can clearly articulate why one response is better than another.
Posted October 2, 2026
This role involves evaluating AI assistants live during India-involved T20I cricket matches by asking fan questions and rating the quality, accuracy, and presentation of their responses. The work takes place only on scheduled match days, in two to two and a half hour slots, and requires solid knowledge of international cricket.
Posted October 1, 2026
Board-certified emergency medicine physician sought to evaluate and annotate clinical documentation generated by medical AI tools. The role involves reviewing patient records, validating the accuracy of emergency summaries produced by AI, and flagging errors or omissions to help engineering teams improve these systems. Profile: practicing emergency physician with at least 2 to 3 years of experience.
Posted October 1, 2026
You will evaluate AI assistants live during football matches, asking natural fan questions and rating the quality, accuracy, and clarity of their responses. This role requires genuine passion for football and availability during scheduled match times.
Posted October 1, 2026
Mercor is looking for clinical mental health experts to evaluate the realism and quality of simulated clinical conversations generated by AI. This short-term role, entirely remote, is aimed at mental health professionals capable of applying their clinical experience to judge the authenticity of realistic conversational scenarios.
Posted September 30, 2026
You will contribute to training AI models by writing and validating formalized mathematical proofs in Lean 4. You convert informal mathematical statements into precise declarations and verify that generated proofs are correct both formally and mathematically. This role is aimed at experienced Lean engineers or mathematicians with strong expertise in formal proof.
Posted September 30, 2026
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FAQ
305 Mercor jobs are open on SideHustler today. 11 were posted in the last 7 days. Listings are rechecked against the official postings: the latest check on this list was on October 8, 2026.
Among the 291 open roles that publish an hourly rate in USD, pay runs from $10 to $380 per hour, with a median of $75. These are the rates the platforms publish, not a guarantee of income or hours.
The most requested areas of expertise on these listings are AI Evaluation, Red Teaming, Adversarial Testing, Multilingual Expertise, Vulnerability Assessment. Each listing states its own requirements.
You apply on work.mercor.com: create a profile, complete a skills assessment, then get matched to projects that fit your background.
It depends on the job. 301 of the 305 open Mercor jobs publish the countries they accept, and each listing shows them. The others do not publish a country list.
No. SideHustler is independent of Mercor. We list its public postings and send you to the official one to apply. When an Apply link is a referral link, it is marked as such.
Apply now opens the official posting on the platform, where you complete the application. You need no account on SideHustler. To see which roles fit your background first, add your resume and every open job is scored against your profile.