https://aitrainers.jobs/ai-training-jobs/stem-mathAI companies pay mathematicians, physicists, chemists, biologists, engineers and STEM PhDs to write, check and grade the data their models learn from. Here are the open maths and science roles on every platform we track.en Tue, 20 Oct 2026 16:05:40 GMT https://aitrainers.jobs/jobs/inpatient-care-physician-md-do-1wnwlqhttps://aitrainers.jobs/jobs/inpatient-care-physician-md-do-1wnwlqTue, 20 Oct 2026 00:00:00 GMTmicro1 · United States · $100–115/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-1w9imfhttps://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-1w9imfTue, 20 Oct 2026 00:00:00 GMTMindrift · United States · Up to $69/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-18jlmwhttps://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-18jlmwTue, 20 Oct 2026 00:00:00 GMTMindrift · 8 countries · Up to $50/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-1c61lihttps://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-1c61liTue, 20 Oct 2026 00:00:00 GMTMindrift · Canada, Australia · Up to $39/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-1ai3zchttps://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-1ai3zcTue, 20 Oct 2026 00:00:00 GMTMindrift · 10 countries · Up to $37/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-1a84dnhttps://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-1a84dnTue, 20 Oct 2026 00:00:00 GMTMindrift · United Kingdom · Up to $36/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-19y4ryhttps://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-19y4ryTue, 20 Oct 2026 00:00:00 GMTMindrift · 16 countries · Up to $31/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-ff66o1https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-ff66o1Tue, 20 Oct 2026 00:00:00 GMTMindrift · 4 countries · Up to $17/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-el7dl4https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-el7dl4Tue, 20 Oct 2026 00:00:00 GMTMindrift · 6 countries · Up to $14/hr https://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-dtte6chttps://aitrainers.jobs/jobs/freelance-mechanical-cfd-engineer-ai-trainer-dtte6cTue, 20 Oct 2026 00:00:00 GMTMindrift · 14 countries · Up to $9/hr https://aitrainers.jobs/jobs/junior-data-scientist-10f6vlhttps://aitrainers.jobs/jobs/junior-data-scientist-10f6vlMon, 19 Oct 2026 00:00:00 GMTEvaluating AI answers to statistics and machine-learning problems, and writing reference solutions and statistical checks. Suits early-career data scientists with at least a year of professional experience at a well-established company. https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-18982shttps://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-18982sMon, 19 Oct 2026 00:00:00 GMTMindrift · 8 countries · Up to $50/hr https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-1dj6tyhttps://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-1dj6tyMon, 19 Oct 2026 00:00:00 GMTMindrift · Canada, Australia · Up to $39/hr https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-19nce9https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-19nce9Mon, 19 Oct 2026 00:00:00 GMTMindrift · 10 countries · Up to $37/hr https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-19xbzyhttps://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-19xbzyMon, 19 Oct 2026 00:00:00 GMTMindrift · United Kingdom · Up to $36/hr https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-1bba0fhttps://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-1bba0fMon, 19 Oct 2026 00:00:00 GMTMindrift · 15 countries · Up to $31/hr https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-cwvt0chttps://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-cwvt0cMon, 19 Oct 2026 00:00:00 GMTMindrift · 5 countries · Up to $19/hr https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-ektf66https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-ektf66Mon, 19 Oct 2026 00:00:00 GMTMindrift · 4 countries · Up to $17/hr https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-eatth7https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-eatth7Mon, 19 Oct 2026 00:00:00 GMTMindrift · 6 countries · Up to $14/hr https://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-jxuzslhttps://aitrainers.jobs/jobs/freelance-mechanical-cad-simulation-engineer-ai-trainer-jxuzslMon, 19 Oct 2026 00:00:00 GMTMindrift · 9 countries · Up to $9/hr https://aitrainers.jobs/jobs/physical-sciences-expert-ai-training-1y2sg4https://aitrainers.jobs/jobs/physical-sciences-expert-ai-training-1y2sg4Mon, 19 Oct 2026 18:21:15 GMTShort contract turning physics, chemistry or materials workflows into reproducible computational tasks that AI agents must solve in a Linux terminal. Suits PhD-level scientists who can build, debug and validate numerical workflows. https://aitrainers.jobs/jobs/engineering-expert-1meyhvhttps://aitrainers.jobs/jobs/engineering-expert-1meyhvMon, 19 Oct 2026 00:00:00 GMTDesigns simulation-based engineering problems with verifiable outcomes and analyses where AI coding agents go wrong on them. Suits Master's or PhD engineers with a decade of design experience and hands-on open-source simulation tools. https://aitrainers.jobs/jobs/stem-researchers-msc-phd-must-own-macbook-8nq044https://aitrainers.jobs/jobs/stem-researchers-msc-phd-must-own-macbook-8nq044Sun, 18 Oct 2026 18:04:13 GMTCompletes and narrates real STEM research tasks, such as literature review, data analysis and technical writing, to create AI training data. Suits STEM postgraduates or MSc and PhD holders who can work part-time. https://aitrainers.jobs/jobs/chemistry-professionals-master-s-or-phd-ongoing-expert-contributions-iufb8vhttps://aitrainers.jobs/jobs/chemistry-professionals-master-s-or-phd-ongoing-expert-contributions-iufb8vSun, 18 Oct 2026 01:19:21 GMTValidates chemical structures and scientific texts and answers domain-specific chemistry queries in an ongoing remote engagement. Suits chemists with a Master's or PhD and academic or applied laboratory experience. https://aitrainers.jobs/jobs/chemistry-master-s-and-phds-paid-expert-contributions-waz2johttps://aitrainers.jobs/jobs/chemistry-master-s-and-phds-paid-expert-contributions-waz2joSun, 18 Oct 2026 01:18:58 GMTAnswers detailed chemistry questions and reviews chemical data in remote, asynchronous tasks for an ongoing expert initiative. Suits chemists with a master's or PhD who can explain technical concepts clearly in writing. https://aitrainers.jobs/jobs/advanced-chemistry-experts-ongoing-scientific-contributions-loi7srhttps://aitrainers.jobs/jobs/advanced-chemistry-experts-ongoing-scientific-contributions-loi7srSun, 18 Oct 2026 00:55:24 GMTSolves advanced chemistry problems, reviews technical scientific texts and annotates specialized chemical datasets through asynchronous desktop tasks. Suits chemists with a Master's or PhD and strong academic backgrounds. https://aitrainers.jobs/jobs/advanced-chemistry-professionals-paid-expert-research-contributions-u3b4gdhttps://aitrainers.jobs/jobs/advanced-chemistry-professionals-paid-expert-research-contributions-u3b4gdSun, 18 Oct 2026 00:39:07 GMTExplains complex chemical mechanisms, structures and reactions in AI-moderated expert sessions and reviews scientific prompts. Suits chemists with a Master's or PhD and strong research or applied industry experience. https://aitrainers.jobs/jobs/physionet-competitor-biomedical-signal-processing-ml-1ppepthttps://aitrainers.jobs/jobs/physionet-competitor-biomedical-signal-processing-ml-1ppeptFri, 16 Oct 2026 00:00:00 GMTCompetition specialists build rigorous biomedical signal problems and write reference solutions in Python or MATLAB. Suits people with PhysioNet-style competition experience and hands-on work with physiological signals such as ECG or EEG. https://aitrainers.jobs/jobs/stem-expert-msc-phd-1quhichttps://aitrainers.jobs/jobs/stem-expert-msc-phd-1quhicFri, 16 Oct 2026 00:00:00 GMTDomain scientists solve and review challenging STEM problems and use Python to test whether AI-generated answers are correct. Suits chemistry, biology, math, physics or geoscience experts comfortable with coding agents and scientific Python. https://aitrainers.jobs/jobs/stem-expert-chemistry-computational-chemistry-phd-33qt03https://aitrainers.jobs/jobs/stem-expert-chemistry-computational-chemistry-phd-33qt03Fri, 16 Oct 2026 00:00:00 GMTChemists design, critique and validate chemistry problems, workflows and reasoning, including reaction mechanisms and simulations. Suits PhD-level chemists with lab or simulation-heavy research experience who document methods clearly. https://aitrainers.jobs/jobs/stem-expert-biology-bioinformatics-phd-y2kcjphttps://aitrainers.jobs/jobs/stem-expert-biology-bioinformatics-phd-y2kcjpFri, 16 Oct 2026 00:00:00 GMTBiologists and bioinformaticians review analysis pipelines and assess biological reasoning in AI outputs. Suits PhD-level specialists with hands-on experience analyzing real biological data in Python or R. https://aitrainers.jobs/jobs/licensed-physician-md-do-freelance-ai-trainer-1ksprvhttps://aitrainers.jobs/jobs/licensed-physician-md-do-freelance-ai-trainer-1ksprvFri, 16 Oct 2026 00:00:00 GMTMindrift · 12 countries · $60/hr https://aitrainers.jobs/jobs/physician-md-do-medical-ai-evaluation-1n3dlnhttps://aitrainers.jobs/jobs/physician-md-do-medical-ai-evaluation-1n3dlnFri, 16 Oct 2026 00:00:00 GMTMindrift · 12 countries · $60/hr https://aitrainers.jobs/jobs/physician-reviewer-md-do-medical-ai-evaluation-a5arqxhttps://aitrainers.jobs/jobs/physician-reviewer-md-do-medical-ai-evaluation-a5arqxFri, 16 Oct 2026 00:00:00 GMTMindrift · 17 countries · $60/hr https://aitrainers.jobs/jobs/licensed-physician-md-do-freelance-ai-trainer-h4156ahttps://aitrainers.jobs/jobs/licensed-physician-md-do-freelance-ai-trainer-h4156aFri, 16 Oct 2026 00:00:00 GMTMindrift · 6 countries · $35/hr https://aitrainers.jobs/jobs/physician-md-do-medical-ai-evaluation-l37ppxhttps://aitrainers.jobs/jobs/physician-md-do-medical-ai-evaluation-l37ppxFri, 16 Oct 2026 00:00:00 GMTMindrift · 11 countries · $35/hr https://aitrainers.jobs/jobs/physician-reviewer-md-do-medical-ai-evaluation-1dtzefhttps://aitrainers.jobs/jobs/physician-reviewer-md-do-medical-ai-evaluation-1dtzefFri, 16 Oct 2026 00:00:00 GMTMindrift · 6 countries · $35/hr https://aitrainers.jobs/jobs/applied-scientist-hupyn8https://aitrainers.jobs/jobs/applied-scientist-hupyn8Thu, 15 Oct 2026 00:00:00 GMTEvaluates AI answers on statistics, machine learning and experimentation, and writes reference solutions for them. Suits data scientists with some industry experience who spot methodological errors and explain them clearly. https://aitrainers.jobs/jobs/mathematician-formalization-ai-foundations-remote-contract-obsgjuhttps://aitrainers.jobs/jobs/mathematician-formalization-ai-foundations-remote-contract-obsgjuWed, 14 Oct 2026 00:00:01 GMTFormalize advanced mathematical theorems in Lean 4 and audit existing proofs for correctness, contributing to large formal libraries. Suits mathematicians with a Master's or PhD who can turn informal arguments into machine-checkable proofs. https://aitrainers.jobs/jobs/mathematician-formal-proof-ai-research-remote-contract-38bguuhttps://aitrainers.jobs/jobs/mathematician-formal-proof-ai-research-remote-contract-38bguuWed, 14 Oct 2026 00:00:01 GMTFormalize advanced theorems in Lean 4 and verify existing formal proofs for logical integrity. Suits mathematicians with a Master's or PhD who thrive on rigorous proof writing and remote, asynchronous work. https://aitrainers.jobs/jobs/mathematicien-ne-formalisation-fondements-de-l-ia-contrat-a-distance-80vfishttps://aitrainers.jobs/jobs/mathematicien-ne-formalisation-fondements-de-l-ia-contrat-a-distance-80vfisWed, 14 Oct 2026 00:00:01 GMTTranslate advanced mathematical arguments into structured Lean 4 proofs and audit existing formal work. Suits mathematicians with a Master's or PhD who write rigorous proofs and want to contribute to frontier AI research. https://aitrainers.jobs/jobs/mathematician-proof-formalization-ai-research-remote-contract-3oeq76https://aitrainers.jobs/jobs/mathematician-proof-formalization-ai-research-remote-contract-3oeq76Wed, 14 Oct 2026 00:00:01 GMTBuild clean, well-structured Lean 4 proofs of advanced theorems and audit existing formal proofs for correctness. Suits mathematicians in Canada with a Master's or PhD who turn informal reasoning into machine-checkable form. https://aitrainers.jobs/jobs/mathematician-formal-systems-ai-foundations-remote-contract-10a4fwhttps://aitrainers.jobs/jobs/mathematician-formal-systems-ai-foundations-remote-contract-10a4fwWed, 14 Oct 2026 00:00:01 GMTFormalize advanced theorems in Lean 4, contributing to large formal libraries and checking existing proofs. Suits mathematicians in Germany with a Master's or PhD who are rigorous, self-motivated and comfortable working asynchronously. https://aitrainers.jobs/jobs/mathematician-foundations-formalization-ai-research-contract-hthqdxhttps://aitrainers.jobs/jobs/mathematician-foundations-formalization-ai-research-contract-hthqdxWed, 14 Oct 2026 00:00:01 GMTWork on formal proofs and large libraries in Lean 4, verifying arguments across many mathematical fields. Suits mathematicians with a Master's or PhD who enjoy rigorous logic and independent, remote work. https://aitrainers.jobs/jobs/mathematician-formal-proof-ai-foundations-remote-contract-29ap9bhttps://aitrainers.jobs/jobs/mathematician-formal-proof-ai-foundations-remote-contract-29ap9bWed, 14 Oct 2026 00:00:01 GMTWrite and check Lean 4 formal proofs of advanced theorems, including contributions to large libraries such as mathlib. Suits mathematicians in Brazil with a Master's or PhD who enjoy rigorous, machine-verifiable proof work. https://aitrainers.jobs/jobs/mathematician-foundations-formal-proof-ai-training-ovoii6https://aitrainers.jobs/jobs/mathematician-foundations-formal-proof-ai-training-ovoii6Wed, 14 Oct 2026 00:00:01 GMTFormalize mathematical arguments in Lean 4 and audit proofs for completeness and logic across disciplines. Suits mathematicians with a Master's or PhD who are methodical and happy working on their own schedule. https://aitrainers.jobs/jobs/stem-expert-mandarin-chinese-mainland-china-3whv82https://aitrainers.jobs/jobs/stem-expert-mandarin-chinese-mainland-china-3whv82Wed, 14 Oct 2026 05:31:45 GMTScientists and engineers write realistic technical tasks in Mandarin and grade AI agents' work for accuracy. Suits Chinese-speaking researchers and engineers who can work about 21 hours a week on a pilot. https://aitrainers.jobs/jobs/stem-expert-german-germany-12un16https://aitrainers.jobs/jobs/stem-expert-german-germany-12un16Wed, 14 Oct 2026 05:30:21 GMTScientists and engineers write realistic technical tasks in German and grade AI agents' work for accuracy. Suits German-speaking researchers and engineers who can work about 21 hours a week on a pilot. https://aitrainers.jobs/jobs/stem-expert-spanish-spain-11pfkzhttps://aitrainers.jobs/jobs/stem-expert-spanish-spain-11pfkzWed, 14 Oct 2026 05:29:49 GMTScientists and engineers write realistic technical tasks in Spanish and grade AI agents' work for accuracy. Suits Spanish-speaking researchers and engineers who can work about 21 hours a week on a pilot. https://aitrainers.jobs/jobs/experto-en-fisica-ai-content-specialist-vt9tw3https://aitrainers.jobs/jobs/experto-en-fisica-ai-content-specialist-vt9tw3Wed, 14 Oct 2026 00:00:01 GMTCreate advanced physics problems with worked solutions and evaluate AI answers for scientific accuracy and clarity. Suits Master's-level physicists in Mexico who write clearly in English and enjoy self-paced, asynchronous work.