https://aitrainers.jobs/ai-training-jobs/stem-math/country/pt13 open maths and science roles name Portugal as a country they accept, and 27 more maths and science roles are open worldwide. Among the 8 that state an hourly rate, the median is $50/hr.en Tue, 20 Oct 2026 22:05:49 GMT https://aitrainers.jobs/jobs/chemistry-expert-portugal-yede17https://aitrainers.jobs/jobs/chemistry-expert-portugal-yede17Thu, 06 Aug 2026 11:34:48 GMTPart-time remote work building chemistry challenges that require computational rigour and documented solutions. Suits chemists with a graduate degree and research or industry modelling experience. https://aitrainers.jobs/jobs/biology-expert-ai-trainer-portugal-117vorhttps://aitrainers.jobs/jobs/biology-expert-ai-trainer-portugal-117vorTue, 04 Aug 2026 13:14:06 GMTRemote part-time work writing deterministic biology challenges with one correct answer for AI model evaluation. Suits life scientists with a graduate degree and an interest in computational analysis. https://aitrainers.jobs/jobs/mathematics-expert-portugal-1gt79ghttps://aitrainers.jobs/jobs/mathematics-expert-portugal-1gt79gFri, 19 Jun 2026 21:11:48 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-portugal-17jdr9https://aitrainers.jobs/jobs/physics-expert-ai-trainer-portugal-17jdr9Thu, 18 Jun 2026 21:51:30 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/econometrics-instructor-wwe19ghttps://aitrainers.jobs/jobs/econometrics-instructor-wwe19gTue, 03 Mar 2026 20:10:35 GMTYou validate AI-generated econometric questions, models and explanations, checking assumptions, methods and interpretation of results. It suits experienced econometrics teachers and quantitative economists who can give precise written feedback on their own time. https://aitrainers.jobs/jobs/science-specialist-fluent-in-portuguese-portugal-freelance-ai-trainer--qh547khttps://aitrainers.jobs/jobs/science-specialist-fluent-in-portuguese-portugal-freelance-ai-trainer--qh547kMon, 16 Jun 2025 20:52:53 GMTEuropean 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 European Portuguese. https://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-portuguese-portugal-freelance-ai-trai-kz3uxchttps://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-portuguese-portugal-freelance-ai-trai-kz3uxcSat, 14 Jun 2025 01:37:41 GMTFreelance role for mathematics experts fluent in 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-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-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/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/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/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/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/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/research-analyst-ub8tb1https://aitrainers.jobs/jobs/research-analyst-ub8tb1Tue, 03 Mar 2026 20:10:35 GMTAlignerr · 12 countries · $40–120/hr https://aitrainers.jobs/jobs/principal-clinical-scientist-111s01https://aitrainers.jobs/jobs/principal-clinical-scientist-111s01Tue, 03 Mar 2026 20:10:35 GMTAlignerr · 11 countries · $40–80/hr https://aitrainers.jobs/jobs/precision-medicine-data-lead-1o75vmhttps://aitrainers.jobs/jobs/precision-medicine-data-lead-1o75vmTue, 03 Mar 2026 20:10:35 GMTAlignerr · 11 countries · $40–80/hr https://aitrainers.jobs/jobs/clinical-study-manager-fvym58https://aitrainers.jobs/jobs/clinical-study-manager-fvym58Tue, 03 Mar 2026 20:10:35 GMTAlignerr · 11 countries · $40–80/hr https://aitrainers.jobs/jobs/clinical-business-intelligence-manager-1qhayxhttps://aitrainers.jobs/jobs/clinical-business-intelligence-manager-1qhayxTue, 03 Mar 2026 20:10:35 GMTAlignerr · 11 countries · $40–80/hr https://aitrainers.jobs/jobs/biotech-health-data-governance-lead-1ytsk4https://aitrainers.jobs/jobs/biotech-health-data-governance-lead-1ytsk4Tue, 03 Mar 2026 20:10:35 GMTAlignerr · 9 countries · $40–80/hr https://aitrainers.jobs/jobs/hospital-health-data-governance-lead-zibuoxhttps://aitrainers.jobs/jobs/hospital-health-data-governance-lead-zibuoxTue, 03 Mar 2026 20:10:35 GMTAlignerr · 11 countries · $40–80/hr https://aitrainers.jobs/jobs/nursing-informatics-specialist-1xjhy3https://aitrainers.jobs/jobs/nursing-informatics-specialist-1xjhy3Tue, 03 Mar 2026 20:10:35 GMTAlignerr · 11 countries · $35–80/hr https://aitrainers.jobs/jobs/medical-science-liaison-msl-3ze442https://aitrainers.jobs/jobs/medical-science-liaison-msl-3ze442Tue, 03 Mar 2026 20:10:35 GMTAlignerr · 9 countries · $35–75/hr https://aitrainers.jobs/jobs/population-health-informaticist-aps3g0https://aitrainers.jobs/jobs/population-health-informaticist-aps3g0Tue, 03 Mar 2026 20:10:35 GMTAlignerr · 10 countries · $35–75/hr https://aitrainers.jobs/jobs/marketing-instructor-54vyqbhttps://aitrainers.jobs/jobs/marketing-instructor-54vyqbTue, 03 Mar 2026 20:10:35 GMTAlignerr · 7 countries · $35–70/hr https://aitrainers.jobs/jobs/health-informatics-analyst-1hxocxhttps://aitrainers.jobs/jobs/health-informatics-analyst-1hxocxTue, 03 Mar 2026 20:10:35 GMTAlignerr · 10 countries · $30–65/hr https://aitrainers.jobs/jobs/environmental-management-scientist-ai-training-1lkmh3https://aitrainers.jobs/jobs/environmental-management-scientist-ai-training-1lkmh3Tue, 03 Mar 2026 20:10:35 GMTAlignerr · 6 countries · $30–55/hr https://aitrainers.jobs/jobs/pure-mathematics-specialist-freelance-ai-trainer-project-apsxp5https://aitrainers.jobs/jobs/pure-mathematics-specialist-freelance-ai-trainer-project-apsxp5Fri, 12 Dec 2025 19:07:30 GMTPure mathematicians build and check proofs, then test an AI model's logic and proof strategy, including Lean 4 code. Suits PhD holders or postdocs fluent in Lean 4 who can explain proof strategies rigorously. https://aitrainers.jobs/jobs/ai-training-specialist-stem-focus-1bmwvehttps://aitrainers.jobs/jobs/ai-training-specialist-stem-focus-1bmwveWed, 10 Sep 2025 13:46:21 GMTContributors with a STEM background who label data and review AI outputs for accuracy and reliability. Suits people with a technical degree and prior work in data annotation or model training. https://aitrainers.jobs/jobs/mathematics-ai-training-specialist-n39cl5https://aitrainers.jobs/jobs/mathematics-ai-training-specialist-n39cl5Wed, 10 Sep 2025 13:40:24 GMTMathematics specialists who annotate data and review AI-generated mathematical reasoning for accuracy. Suits people with a maths degree and proven annotation experience. https://aitrainers.jobs/jobs/ai-training-specialist-hindi-language-expert-2r95zihttps://aitrainers.jobs/jobs/ai-training-specialist-hindi-language-expert-2r95ziWed, 10 Sep 2025 13:48:45 GMTScience-trained contributors fluent in Hindi who label data and review AI-generated scientific content. Suits people with a background in biology, chemistry or physics who work well independently. https://aitrainers.jobs/jobs/latex-specialist-fluent-in-russian-freelance-ai-trainer-project-1nghozhttps://aitrainers.jobs/jobs/latex-specialist-fluent-in-russian-freelance-ai-trainer-project-1nghozThu, 07 Aug 2025 22:12:23 GMTFreelance role for LaTeX experts fluent in Russian to test AI models on typesetting and math and log failure modes. It suits STEM graduates with publishing or technical-writing experience who explain their reasoning clearly. https://aitrainers.jobs/jobs/latex-specialist-fluent-in-thai-freelance-ai-trainer-project-aagrnshttps://aitrainers.jobs/jobs/latex-specialist-fluent-in-thai-freelance-ai-trainer-project-aagrnsThu, 07 Aug 2025 22:10:01 GMTFreelance role for LaTeX experts fluent in Thai to test AI models on typesetting and math and log failure modes. It suits STEM graduates with publishing or technical-writing experience who explain their reasoning clearly. https://aitrainers.jobs/jobs/latex-specialist-fluent-in-german-freelance-ai-trainer-project-1qygvxhttps://aitrainers.jobs/jobs/latex-specialist-fluent-in-german-freelance-ai-trainer-project-1qygvxThu, 07 Aug 2025 22:06:34 GMTFreelance role for LaTeX experts fluent in German to test AI models on typesetting and math and log failure modes. It suits STEM graduates with publishing or technical-writing experience who explain their reasoning clearly. https://aitrainers.jobs/jobs/latex-specialist-fluent-in-spanish-spain-freelance-ai-trainer-project-1sod0phttps://aitrainers.jobs/jobs/latex-specialist-fluent-in-spanish-spain-freelance-ai-trainer-project-1sod0pThu, 07 Aug 2025 21:58:36 GMTFreelance role for LaTeX experts fluent in Spanish to test AI models on typesetting and math and log failure modes. It suits STEM graduates with publishing or technical-writing experience who explain their reasoning clearly. https://aitrainers.jobs/jobs/science-specialist-fluent-in-german-freelance-ai-trainer-project-r6x026https://aitrainers.jobs/jobs/science-specialist-fluent-in-german-freelance-ai-trainer-project-r6x026Mon, 16 Jun 2025 20:51:29 GMTGerman-speaking 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 German. https://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-swedish-freelance-ai-trainer-project-160mzlhttps://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-swedish-freelance-ai-trainer-project-160mzlSat, 14 Jun 2025 01:38:44 GMTFreelance role for mathematics experts fluent in Swedish 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/mathematics-specialist-fluent-in-german-freelance-trainer-project-bjg35https://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-german-freelance-trainer-project-bjg35Sat, 14 Jun 2025 01:36:59 GMTFreelance role for mathematics experts fluent in German 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/mathematics-specialist-fluent-in-korean-freelance-ai-trainer-project-mswmzchttps://aitrainers.jobs/jobs/mathematics-specialist-fluent-in-korean-freelance-ai-trainer-project-mswmzcSat, 14 Jun 2025 01:36:43 GMTFreelance role for mathematics experts fluent in Korean 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.