https://aitrainers.jobs/ai-training-jobs/stem-math/country/br38 open maths and science roles name Brazil as a country they accept, and 27 more maths and science roles are open worldwide. Among the 7 that state an hourly rate, the median is $45/hr.en Tue, 20 Oct 2026 16:05:40 GMT 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/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/especialista-em-fisica-ai-content-specialist-5esyayhttps://aitrainers.jobs/jobs/especialista-em-fisica-ai-content-specialist-5esyayWed, 14 Oct 2026 00:00:01 GMTDesign challenging physics questions and clear solutions, then assess AI responses for accuracy and quality of explanation. Suits Master's-level physicists in Brazil who communicate complex ideas clearly in English and work independently. https://aitrainers.jobs/jobs/biology-expert-ai-trainer-brazil-19il6lhttps://aitrainers.jobs/jobs/biology-expert-ai-trainer-brazil-19il6lTue, 04 Aug 2026 12:52:27 GMTRemote part-time work writing advanced biology problems with exactly one correct answer and verified solutions. Suits biologists with a graduate degree who are comfortable with Python-based analysis. https://aitrainers.jobs/jobs/mathematics-expert-brazil-1osfv1https://aitrainers.jobs/jobs/mathematics-expert-brazil-1osfv1Thu, 18 Jun 2026 22:42:20 GMTRemote contract work designing rigorous, single-answer math problems with complete solutions to test and train frontier AI reasoning. Suits mathematicians with advanced degrees who write precisely and enjoy building original problems. https://aitrainers.jobs/jobs/physics-expert-ai-trainer-brazil-cech5thttps://aitrainers.jobs/jobs/physics-expert-ai-trainer-brazil-cech5tThu, 18 Jun 2026 20:38:05 GMTRemote contract work designing rigorous, single-answer physics problems with complete worked solutions for AI training. Suits physicists with research or industry experience who write precisely and enjoy building original multi-step problems. https://aitrainers.jobs/jobs/researcher-lean-4-formal-proof-systems-pj8a3fhttps://aitrainers.jobs/jobs/researcher-lean-4-formal-proof-systems-pj8a3fTue, 03 Mar 2026 20:10:35 GMTYou translate informal proofs into Lean 4 and investigate where automated provers fail, informing formal verification pipelines. It suits mathematicians with serious formal proof experience who enjoy frontier, research-style work. https://aitrainers.jobs/jobs/formal-verification-scientist-lean-4-mathlib-1hbpvwhttps://aitrainers.jobs/jobs/formal-verification-scientist-lean-4-mathlib-1hbpvwTue, 03 Mar 2026 20:10:35 GMTYou translate rigorous mathematics into Lean 4 proofs and analyze where proof assistants break down, helping structure formal models. It suits mathematicians who love formal reasoning and can work independently on large formalization problems. https://aitrainers.jobs/jobs/lean-4-proof-engineer-mathematical-formalization-18gh7phttps://aitrainers.jobs/jobs/lean-4-proof-engineer-mathematical-formalization-18gh7pTue, 03 Mar 2026 20:10:35 GMTYou turn advanced mathematical arguments into structured, machine-verifiable Lean 4 proofs and test where the tools fall short. It suits mathematicians and formal verification specialists with Master's-level training and precise written reasoning. https://aitrainers.jobs/jobs/applied-formal-methods-researcher-lean-4-pchfoqhttps://aitrainers.jobs/jobs/applied-formal-methods-researcher-lean-4-pchfoqTue, 03 Mar 2026 20:10:35 GMTYou formalize mathematical arguments in Lean 4 and investigate root causes of automated prover failures for AI research. It suits mathematically mature researchers with Lean or Coq experience who work at the edge of formal tools. https://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-portuguese-brazil-ai-trainer-1xmdughttps://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-portuguese-brazil-ai-trainer-1xmdugMon, 08 Sep 2025 09:20:42 GMTBrazilian Portuguese-fluent mathematicians who write, verify and localise maths problems and AI-generated solutions. Suits people with a quantitative degree who can explain technical ideas clearly. https://aitrainers.jobs/jobs/science-specialist-fluent-in-portuguese-brazil-freelance-ai-trainer-pr-1457xxhttps://aitrainers.jobs/jobs/science-specialist-fluent-in-portuguese-brazil-freelance-ai-trainer-pr-1457xxMon, 16 Jun 2025 20:52:17 GMTBrazilian Portuguese science specialists test an AI model on physical, earth and environmental science, recording each factual or logical error. Suits science graduates with teaching, research or science-communication experience who write fluently in Brazilian Portuguese. https://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-portuguese-brazil-freelance-ai-traine-1y6nschttps://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-portuguese-brazil-freelance-ai-traine-1y6nscSat, 14 Jun 2025 01:37:26 GMTFreelance role for mathematics experts fluent in Brazilian Portuguese to test AI models on math questions and proofs and document failure modes. It suits people with publications, teaching or research experience in mathematics who explain their reasoning clearly. 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-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/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/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/competitive-data-scientist-kaggle-1m1u7nhttps://aitrainers.jobs/jobs/competitive-data-scientist-kaggle-1m1u7nMon, 12 Oct 2026 00:00:00 GMTBuilds reproducible data science tasks with verified reference solutions and checks that reject leaky or incomplete approaches. Suits competition-experienced data scientists who can debug unfamiliar Python code. https://aitrainers.jobs/jobs/electrical-engineering-expert-15d3xshttps://aitrainers.jobs/jobs/electrical-engineering-expert-15d3xsMon, 12 Oct 2026 02:04:22 GMTRemote part-time work designing electrical and electronics tasks, including circuit checks and PCB reviews, for AI evaluation. Suits electrical engineers with substantial professional experience in circuit design or electronics development. https://aitrainers.jobs/jobs/mechnical-engineering-expert-tka5zqhttps://aitrainers.jobs/jobs/mechnical-engineering-expert-tka5zqMon, 12 Oct 2026 02:00:49 GMTRemote part-time work creating mechanical design and analysis tasks that test AI agents on realistic engineering workflows. Suits mechanical engineers with substantial professional experience in design, manufacturing or analysis. https://aitrainers.jobs/jobs/civil-engineering-expert-p6ugdahttps://aitrainers.jobs/jobs/civil-engineering-expert-p6ugdaSat, 10 Oct 2026 13:31:13 GMTRemote part-time work checking construction estimates, bills of quantities and tender documents to build reference answers for AI evaluation. Suits quantity surveyors or estimators with substantial professional experience. https://aitrainers.jobs/jobs/chemistry-expert-j8j0gyhttps://aitrainers.jobs/jobs/chemistry-expert-j8j0gyFri, 02 Oct 2026 00:55:44 GMTDoctoral-level chemists design rigorous chemistry questions and review AI reasoning for scientific accuracy. Suited to experts who can write clear reference responses and document errors in model reasoning. https://aitrainers.jobs/jobs/chemist-uqzotyhttps://aitrainers.jobs/jobs/chemist-uqzotyFri, 02 Oct 2026 00:58:50 GMTPracticing chemists evaluate AI answers to applied chemistry questions and flag unsafe or incorrect procedures. Suited to degree-qualified chemists with professional laboratory experience. https://aitrainers.jobs/jobs/physicist-1mba6jhttps://aitrainers.jobs/jobs/physicist-1mba6jFri, 02 Oct 2026 00:06:32 GMTRemote contributor work evaluating AI answers to physics questions, writing reference solutions and flagging unsupported assumptions. Suits physicists with research, lab or industry experience who communicate clearly in writing. https://aitrainers.jobs/jobs/chemistry-specialist-1rbs82https://aitrainers.jobs/jobs/chemistry-specialist-1rbs82Fri, 02 Oct 2026 01:04:07 GMTChemists with subdiscipline expertise write chemistry questions and judge the correctness of AI answers. Suited to people with graduate chemistry training who can explain complex chemistry clearly. https://aitrainers.jobs/jobs/mathematics-expert-1y7z4phttps://aitrainers.jobs/jobs/mathematics-expert-1y7z4pThu, 01 Oct 2026 23:50:30 GMTRemote work writing proof-based and computational problems and verifying AI solutions step by step. Suits mathematicians with rigorous proof-writing skills and experience explaining their reasoning clearly. https://aitrainers.jobs/jobs/statistician-1gn5ruhttps://aitrainers.jobs/jobs/statistician-1gn5ruThu, 01 Oct 2026 23:52:20 GMTRemote work designing statistical analysis tasks with reference answers and reviewing AI-generated statistical reasoning. Suits statisticians fluent in R or Python who can explain uncertainty and method choice. https://aitrainers.jobs/jobs/physics-expert-mc5lh1https://aitrainers.jobs/jobs/physics-expert-mc5lh1Thu, 01 Oct 2026 23:53:50 GMTRemote role reading physics material, writing and reviewing problems, and correcting errors in AI physical reasoning. Suits physicists with a graduate degree and broad command of core physics. https://aitrainers.jobs/jobs/mathematics-expert-latam-europe-s8276vhttps://aitrainers.jobs/jobs/mathematics-expert-latam-europe-s8276vThu, 17 Sep 2026 14:06:02 GMTRemote part-time work designing original mathematics problems that test deep reasoning, each with one verified answer. Suits mathematicians with a master's or PhD and strong Python or numerical methods skills. https://aitrainers.jobs/jobs/physics-expert-phd-postdoc-1ts3c9https://aitrainers.jobs/jobs/physics-expert-phd-postdoc-1ts3c9Mon, 07 Sep 2026 00:00:00 GMTFlexible remote work that solves advanced physics problems with rigorous derivations, checked with symbolic and numerical tools. It suits PhD holders and postdocs who are active in a physics subfield and have recent publications. https://aitrainers.jobs/jobs/bioinformatics-expert-wi617zhttps://aitrainers.jobs/jobs/bioinformatics-expert-wi617zWed, 02 Sep 2026 16:28:12 GMTRemote part-time work creating genetics problems that require multi-step inheritance, pedigree or genomic reasoning, with verified answers. Suits geneticists or molecular biologists with a graduate degree and statistical analysis skills. https://aitrainers.jobs/jobs/bioinformatics-expert-xh6m54https://aitrainers.jobs/jobs/bioinformatics-expert-xh6m54Wed, 02 Sep 2026 16:27:29 GMTPart-time remote work designing bioinformatics tasks that require interpreting biological data through multi-step computation. Suits computational biologists or genomics specialists with a graduate degree and strong Python or R skills. https://aitrainers.jobs/jobs/energy-expert-1hgb0whttps://aitrainers.jobs/jobs/energy-expert-1hgb0wWed, 02 Sep 2026 16:25:47 GMTRemote part-time work building energy systems problems that require quantitative analysis and optimisation, with verified solutions. Suits engineers with a graduate degree and experience in power, renewables or energy modelling. https://aitrainers.jobs/jobs/electrical-engineering-expert-1hekzxhttps://aitrainers.jobs/jobs/electrical-engineering-expert-1hekzxWed, 02 Sep 2026 16:24:06 GMTPart-time remote project work writing electrical engineering problems that need quantitative reasoning and checked answers. Suits engineers with a master's or PhD in electrical or electronics fields. https://aitrainers.jobs/jobs/architectural-engineering-expert-107zq8https://aitrainers.jobs/jobs/architectural-engineering-expert-107zq8Wed, 02 Sep 2026 16:22:26 GMTRemote part-time work designing building engineering problems that integrate structural, energy and environmental constraints. Suits engineers with a graduate degree and experience in building systems or energy performance. https://aitrainers.jobs/jobs/civil-engineering-expert-1b3zjehttps://aitrainers.jobs/jobs/civil-engineering-expert-1b3zjeWed, 02 Sep 2026 16:21:08 GMTPart-time remote work creating civil engineering problems that require multi-step analysis, with verified solutions. Suits engineers with a graduate degree and strong structural, geotechnical or infrastructure experience. https://aitrainers.jobs/jobs/mechanical-engineering-expert-2b2a4uhttps://aitrainers.jobs/jobs/mechanical-engineering-expert-2b2a4uWed, 02 Sep 2026 15:59:49 GMTRemote part-time work designing mechanical engineering problems with one verifiable answer to test AI reasoning. Suits engineers with a master's or PhD and strong analysis, simulation and CAD experience. https://aitrainers.jobs/jobs/chemistry-expert-remote-europe-latam-6mptz2https://aitrainers.jobs/jobs/chemistry-expert-remote-europe-latam-6mptz2Thu, 06 Aug 2026 11:14:39 GMTPart-time remote work designing chemistry problems that go beyond recall, each with one verified answer. Suits chemists holding a graduate degree who are comfortable with simulation or cheminformatics tools. https://aitrainers.jobs/jobs/biology-specialist-masters-phds-jtecs4https://aitrainers.jobs/jobs/biology-specialist-masters-phds-jtecs4Tue, 03 Mar 2026 20:10:35 GMTBiology specialists with advanced degrees design problems in genetics and biotechnology and check AI reasoning for scientific accuracy. It suits detail-oriented scientists who code in Python or R. https://aitrainers.jobs/jobs/biology-researcher-masters-phds-9covuphttps://aitrainers.jobs/jobs/biology-researcher-masters-phds-9covupTue, 03 Mar 2026 20:10:35 GMTBiology researchers develop problems across the life sciences and evaluate AI-generated scientific content for depth and accuracy. It suits advanced-degree scientists based in the listed countries who communicate clearly. https://aitrainers.jobs/jobs/biology-expert-masters-phds-1nkojzhttps://aitrainers.jobs/jobs/biology-expert-masters-phds-1nkojzTue, 03 Mar 2026 20:10:35 GMTBiology experts with Master's or PhD training solve advanced life-science problems and critique AI reasoning. It suits detail-oriented researchers who are comfortable with Python or R. https://aitrainers.jobs/jobs/material-science-specialist-masters-phds-13g9lhhttps://aitrainers.jobs/jobs/material-science-specialist-masters-phds-13g9lhTue, 03 Mar 2026 20:10:35 GMTMaterials scientists with advanced degrees design rigorous problems in semiconductor and molecular modeling and evaluate AI reasoning. It suits researchers who code in Python or MATLAB and write clearly. https://aitrainers.jobs/jobs/semiconductor-material-science-masters-phds-1rzxalhttps://aitrainers.jobs/jobs/semiconductor-material-science-masters-phds-1rzxalTue, 03 Mar 2026 20:10:35 GMTMaterials science specialists craft complex technical problems and assess AI-generated science for accuracy and depth. It suits advanced-degree experts currently based in the listed countries who value scientific precision. https://aitrainers.jobs/jobs/material-science-expert-masters-phds-1tvkwfhttps://aitrainers.jobs/jobs/material-science-expert-masters-phds-1tvkwfTue, 03 Mar 2026 20:10:35 GMTMaterials science experts develop rigorous problems and evaluate AI-generated scientific reasoning for accuracy. It suits Master's or PhD holders based in the listed countries who can write clearly for different audiences.