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.
Mercor is recruiting physicians (M.D./D.O.) to evaluate and train AI models on clinical reasoning. You will be called upon to perform annotation, scoring, and algorithm validation tasks on an as-needed basis according to your areas of specialty, while explaining your medical expertise.
Posted September 15, 2026
This role involves designing and evaluating MLOps infrastructure tasks for training large language models, in the areas of GPU programming, performance profiling, debugging distributed workloads, and high-performance inference. You will generate quality training data by writing precise technical solutions and providing detailed feedback to research and engineering teams. This role targets engineers with confirmed hands-on expertise in ML systems and infrastructure, capable of reasoning about trade-offs between throughput, latency, and memory on modern accelerators.
Posted September 15, 2026
This job involves evaluating and testing how AI models use office and productivity software. You put your practical knowledge to work improving these tools by writing realistic tasks, rating the results generated by AI, and reporting compatibility or robustness issues. This job is for professionals with solid expertise in these software programs who want to participate in AI evaluation.
Posted September 15, 2026
Mercor is recruiting physicists to evaluate and rate responses generated by advanced AI models. You will write physics problems, verify model derivations and reasoning, and provide critical expertise based on your research experience.
Posted September 15, 2026
Mercor is looking for experienced software engineers to evaluate and rate code generated by AI models. You will be asked to write engineering problem statements, examine AI solutions for production robustness, and identify hidden defects. This role is aimed at developers with solid industrial experience and excellent ability to document their technical analysis.
Posted September 15, 2026
You will write test prompts to evaluate whether AI models can distinguish legitimate chemical requests from potentially dangerous misuses. As an analytical chemist, you will develop scenarios along the dual-use line, assess model responses against a defined policy, and document your analyses with accessible technical reasoning.
Posted September 14, 2026
You will listen to audiobooks generated by text-to-speech synthesis in Dutch and evaluate the natural quality and accuracy of the narration. By identifying pronunciation defects, reading errors and unnatural intonations, you will contribute to improving AI models. This part-time role is aimed at native Dutch speakers who are passionate about audiobooks.
Posted September 14, 2026
You will listen to audiobooks generated by text-to-speech synthesis and evaluate the quality of the narration, identifying pronunciation errors, inaccuracies, and lack of naturalness. This role suits a native English speaker passionate about audiobooks, capable of precisely identifying where narration deteriorates so that AI models can be improved.
Posted September 14, 2026
You will listen to audiobooks generated by French text-to-speech synthesis to assess the naturalness and quality of narration. Your role will consist of identifying pronunciation defects, intonation errors, and audio anomalies, documenting them precisely to improve the underlying AI models. This job suits a French-speaking listener passionate about audiobooks, capable of combining critical listening with analytical rigor.
Posted September 14, 2026
This job involves evaluating the quality of audiobooks generated by text-to-speech synthesis in German by carefully listening to recordings to identify defects in pronunciation, intonation, and articulation. Candidates must be native or near-native speakers of German (Germany) with a genuine passion for audiobooks and experience in annotation or proofreading tasks.
Posted September 14, 2026
You will evaluate audiobooks generated by text-to-speech synthesis in Italian by carefully listening to the quality, accuracy, and naturalness of the narration. You will identify and document imperfections in the synthesized speech to help improve voice generation models. This role is intended for native or near-native Italian speakers who have audiobook narration experience and a critical ear.
Posted September 14, 2026
You will listen to audiobooks generated by text-to-speech synthesis in Brazilian Portuguese and evaluate the naturalness and accuracy of the narration. You will identify pronunciation errors, mispronounced or omitted words, and intonation defects to help improve the underlying AI models. This role is suited to a native Brazilian Portuguese speaker who enjoys audiobooks and has 20 hours per week available for remote work.
Posted September 14, 2026
You will evaluate audiobooks generated by text-to-speech synthesis in European Portuguese, listening carefully to identify pronunciation defects, intonation issues, or other anomalies in the narration. Your role consists of annotating these errors precisely in order to improve the underlying AI models. This job is intended for native or near-native speakers of European Portuguese who are passionate about audiobooks and have experience in annotation or careful revision.
Posted September 14, 2026
You will listen to audiobooks generated by text-to-speech synthesis in North American Spanish to evaluate the naturalness and quality of the narration. Your job is to detect pronunciation errors, inaccuracies, and acoustic defects, then document them precisely to improve the underlying models. This role suits a native Spanish speaker passionate about audiobooks and experienced with detailed annotation work.
Posted September 14, 2026
You will analyze official communications from a non-G7 central bank (statements, minutes, speeches) to evaluate and improve AI models in macroeconomics. Based on fixed time cutoffs and without hindsight knowledge, you will interpret monetary policy signals, compare them to market expectations, and provide calibrated analyses on the central bank's stance. This role requires deep expertise in a specific central bank and mastery of its communication language.
Posted September 14, 2026
You will work on evaluating frontier AI models to test their ability to distinguish legitimate chemical requests from malicious uses. As a chemical defense researcher, you will write targeted questions, evaluate model responses against a defined policy framework, and document your judgments with rigorous technical justifications. This role requires deep expertise in chemical defense to draw the line between routine professional questions and those with high potential for misuse.
Posted September 14, 2026
You will contribute to evaluating AI models as an expert in explosives and energetic materials. Your role involves writing sharp technical questions in your field, evaluating model responses against a safety policy, and documenting correct answers with technical justification. This work requires the ability to distinguish legitimate professional questions from suspicious requests that could serve malicious purposes.
Posted September 14, 2026
This role consists of analyzing how events affecting a company propagate to its suppliers, customers, competitors, and other stakeholders in the sector. You will map economic networks based on official documents and estimate the financial impact of each identified link, reasoning without privileged information or hindsight.
Posted September 14, 2026
You will contribute to evaluating AI models for radiological safety by writing test requests at different difficulty levels and judging whether the model's responses meet safety standards. This role requires recognized expertise in radiological crisis management, capable of distinguishing legitimate professional questions from potentially dangerous requests.
Posted September 14, 2026
This role involves predicting the content and timing of research note publications produced by sell-side equity analysts in response to market catalysts. You must leverage your practitioner experience to document the judgment a senior analyst would have formed at a given moment, reasoning solely from public and historical information.
Posted September 14, 2026
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FAQ
305 Mercor jobs are open on SideHustler today. 10 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.