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178 open AI training roles in STEM.

$36.50/hrmedian listed rate
176 of 178roles list an hourly rate
7platforms, of the 10 we read

Roles for scientists, engineers and mathematicians who build and check hard technical problems for AI models.

Where the roles are

  • Meridial16% of its own list91 roles
  • SME Careers18% of its own list46 roles
  • micro112% of its own list32 roles

STEM roles, newest first

Pay as listed by the platform referral link, your pay is unchanged

Today, Monday 12 October2 roles
up to$69/hr Freelance Mechanical CAD&Simulation Engineer - AI Trainer Remote, 61 countriesPart-time Mindrift $250/task Fintech Engineering Leaders: Interview on Card Issuing Platforms United StatesContract Terac
On the list since Friday 9 October176 roles
up to$69/hr Senior CFD Engineer (OpenFOAM / ANSYS Fluent) - Freelance AI TrainerSenior CAD Engineer (CATIA / SolidWorks / NX / ANSYS) - Freelance AI Trainer United StatesPart-time Mindrift2 roles
up to$69/hr Freelance Mechanical CFD Engineer - AI Trainer Remote, 62 countriesPart-time Mindrift $60 to $150/hr Simulation Expert, Real-to-Sim 3D Environments & Assets Remote, 58 countriesContract micro1Referral link
$40 to $90/hr Senior Mechanical Design EngineerCAD Design Expert (Instructor) Remote, 58 countriesContract micro1Referral link2 roles
$70 to $110/hr Senior NDT Inspector (Level II/III) United StatesContract micro1Referral link $70 to $120/hr Senior Electronics Quality Engineer United StatesContract micro1Referral link $70 to $130/hr Senior Aviation Maintenance Inspector United StatesContract micro1Referral link up to$100/hr STEM & Technical Specialist - Rubric Design United StatesContract SME Careers $60 to $100/hr QA & Source Inspection Remote, 58 countriesContract micro1Referral link $21 to $35/hr Mechatronics Engineer United KingdomContract micro1Referral link $21 to $35/hr Audio Engineer Remote, 58 countriesPart-time micro1Referral link
$40 to $80/hr Mechanical Design Engineer - CAD & ManufacturingMechanical CAD ExpertIndustrial Design CAD ExpertFreeCAD ExpertAerospace CAD Expert Remote, 58 countriesContract micro1Referral link5 roles
$10 to $20/hr Break-It-To-Build-It, Hardware Tester Remote, 58 countriesContract micro1Referral link up to$100/hr Explosives & Energetic Materials Expert for AI Safety Audit Remote, 32 countriesFull-time SME Careers up to$100/hr Chemical Safety Expert for AI Model Safety Audit Remote, 32 countriesContract SME Careers up to$95/hr Materials Scientist Remote, 27 countriesContract SME Careers up to$85/hr Biochemist Remote, 27 countriesContract SME Careers
$100 to $200/hr Physics Expert PhD (Statistical Physics / Quantum Information / Condensed Matter)Physics Expert PhD (AMO / Optical Properties of Materials)Physics Expert (PhD / Postdoc) WorldwideContract micro1Referral link3 roles
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$80 to $150/hr Mechanical Engineering ExpertMaterials Science ExpertCircuit Design ExpertAerodynamics ExpertCAD ExpertSTEM Expert WorldwideContract micro1Referral link6 roles
$50 to $150/hr CFD Engineer Remote, 58 countriesContract micro1Referral link
up to$20/hr Social Sciences & Education Team LeadLife & Environmental Sciences Team LeadComputer Science & IT Team Lead IndiaContract SME Careers3 roles
up to$10/hr School Science (Elementary) Team Lead IndiaContract SME Careers $50 to $100/hr Hardware Expert WorldwideContract micro1Referral link $50 to $70/hr 박사(PhD) 전문가, 한국어 | 사회·행동과학, 인문학, 예술, 언어학 분야 South KoreaKorean Welocalize $50 to $70/hr 博士課程スペシャリスト, 日本語 |社会・行動科学、人文科学、芸術、言語学[PhD-JP] JapanJapanese Welocalize
$40 to $100/hr SolidWorks SpecialistSenior FreeCAD EngineerManufacturing Design Engineer (FreeCAD)CAD Data Generation & Validation Specialist (FreeCAD)Autodesk Fusion 360 Specialist Remote, 58 countriesContract micro1Referral link5 roles
$30 to $100/hr Autodesk Inventor Specialist Remote, 58 countriesContract micro1Referral link up to$20/hr FreeCAD Specialist Remote, 5 countriesContract SME Careers up to$30/hr AutoCAD Specialist Remote, 7 countriesContract SME Careers up to$30/hr FreeCAD / Mechanical CAD Expert, AI Computer-Use Trainer Remote, 16 countriesContract SME Careers $100/task Advanced STEM Experts (PhD Level): Scientific Reasoning For AI Training United StatesContract Terac $25 to $30/hr Generative AI Associate(PHD) - Flexible Hours United StatesPart-time Innodata
up to$75/hr Physics Quality Assurance Lead (QAL)Mathematics Quality Assurance Lead (QAL) United States, IndiaContract SME Careers2 roles
up to$70/hr Political Science Quality Assurance Lead (QAL)Geology Quality Assurance Lead (QAL) United StatesContract SME Careers2 roles
up to$90/hr Neuroscience Quality Assurance Lead (QAL) United StatesContract SME Careers up to$110/hr Astronomer Quality Assurance Lead (QAL) United StatesContract SME Careers
up to$75/hr Mechanical Engineer Quality Assurance Lead (QAL)Chemistry Quality Assurance Lead (QAL)Biology Quality Assurance Lead (QAL) United StatesContract SME Careers3 roles
up to$105/hr Electrical Engineer Quality Assurance Lead (QAL)Civil Engineer Quality Assurance Lead (QAL)Chemical Engineer Quality Assurance Lead (QAL) United StatesContract SME Careers3 roles
up to$110/hr iOS Engineer (Swift and Objective-C) Remote, 6 countriesContract SME Careers
up to$90/hr React and Next.js EngineerAngular Engineer Remote, 3 countriesContract SME Careers2 roles
up to$100/hr React Native Engineer Remote, 3 countriesContract SME Careers
up to$70/hr Scala EngineerMechanical EngineerMathematics SpecialistBiologist Remote, 17 countriesContract SME Careers4 roles
up to$60/hr PHP EngineerGo Engineer Remote, 17 countriesContract SME Careers2 roles
up to$65/hr C EngineerC# Engineer Remote, 17 countriesContract SME Careers2 roles
up to$100/hr Electrical EngineerAstronomer & Space ScientistCivil Engineer Remote, 17 countriesContract SME Careers3 roles
up to$100/hr Chemical Engineer Remote, 21 countriesContract SME Careers up to$70/hr Physicist Remote, 8 countriesContract SME Careers up to$70/hr Chemist Remote, 4 countriesContract SME Careers
up to$55/hr Swift EngineerRuby EngineerR EngineerKotlin Engineer Remote, 17 countriesContract SME Careers4 roles
$8 to $30/hr LaTeX Specialist - Freelance AI Trainer Project WorldwideContract Meridial $10 to $30/hr Scientific and Technical Service Specialist - Freelance AI Trainer Project United StatesContract Meridial $35 to $65/hr Pure Mathematics Specialist - Freelance AI Trainer Project WorldwideContract Meridial
$8 to $65/hr Homography Specialist - Freelance AI Trainer ProjectComputer Vision Specialist - Freelance AI Trainer ProjectSound Engineering Specialist - Freelance AI Trainer Project Remote, 3 countriesContract Meridial3 roles
$8 to $65/hr STEM Specialist (Fluent in Vietnamese) - Freelance AI Trainer Project WorldwideVietnamese Meridial $8 to $65/hr STEM Specialist (Fluent in Marathi) - Freelance AI Trainer Project IndiaMarathi Meridial $8 to $65/hr STEM Specialist (Fluent in Chinese) - Freelance AI Trainer Project SingaporeChinese Meridial $8 to $65/hr Chemistry Specialist (Fluent in Egyptian Arabic) - Freelance AI Trainer Project WorldwideArabic Meridial
$8 to $65/hr Wetlab Protocol Specialist - Freelance AI Trainer ProjectSynthetic Biology Specialist - Freelance AI Trainer ProjectPathogen Assays Specialist - Freelance AI Trainer ProjectIsolating Pathogens Specialist - Freelance AI Trainer ProjectFungi Pathogens Specialist - Freelance AI Trainer ProjectAntibiotic Resistance Specialist - Freelance AI Trainer ProjectBiology Specialist - Freelance AI Trainer ProjectExplosive Engineering Specialist - Freelance AI Trainer ProjectEnvironmental Physics Specialist - Freelance AI Trainer ProjectChemical Engineering Specialist - Freelance AI Trainer ProjectPhysics Specialist - Freelance AI Trainer ProjectChemistry Specialist - Freelance AI Trainer Project United StatesContract Meridial12 roles
$6 to $65/hr Microbiology Specialist - Freelance AI Trainer ProjectStatistics Specialist - Freelance AI Trainer ProjectNeuroscience Specialist - Freelance AI Trainer ProjectMicrobiology Specialist - Freelance AI Trainer ProjectCivil Engineering Specialist - Freelance AI Trainer ProjectAnthropology Specialist - Freelance AI Trainer ProjectElectrical Engineering Specialist - Freelance AI Trainer ProjectDatabase & Network Specialist - AI Trainer Project- Freelance AI Trainer Project United StatesContract Meridial8 roles
$8 to $65/hr Synthetic Chemistry Specialist - Freelance AI Trainer ProjectStructural Engineering Specialist - Freelance AI Trainer ProjectRadiochemistry/Nuclear Chemistry Specialist - Freelance AI Trainer ProjectOrganic/Inorganic Chemistry Specialist - Freelance AI Trainer ProjectNuclear Physics Specialist - Freelance AI Trainer ProjectNuclear Engineering Specialist - Freelance AI Trainer ProjectMechanical Engineering Specialist - Freelance AI Trainer ProjectMaterials Science/Engineering Specialist - Freelance AI Trainer ProjectEnvironmental Science Specialist - Freelance AI Trainer ProjectElectrical Engineering Specialist - Freelance AI Trainer ProjectDrug Discovery Specialist - Freelance AI Trainer Project PhilippinesContract Meridial11 roles
$8 to $65/hr Analytical Chemistry Specialist - Freelance AI Trainer Project WorldwideContract Meridial
$8 to $65/hr Science Specialist - Freelance AI Trainer ProjectSTEM Specialist - Freelance AI Trainer ProjectMathematics Specialist - AI Trainer Project- Freelance United States, IndiaContract Meridial3 roles
$8 to $65/hr Science Specialist (Fluent in Swedish) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Swedish) - Freelance AI Trainer Project SwedenSwedish Meridial2 roles
$8 to $65/hr Science Specialist (Fluent in Spanish - Spain) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Spanish - Spain) - Freelance AI Trainer Project SpainSpanish Meridial2 roles
$8 to $65/hr Science Specialist (Fluent in Russian) - Freelance AI Trainer Project PolandRussian Meridial
$8 to $65/hr Science Specialist (Fluent in Portuguese - Portugal) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Portuguese - Portugal) - Freelance AI Trainer Project PortugalPortuguese Meridial2 roles
$8 to $65/hr Science Specialist (Fluent in Portuguese - Brazil) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Portuguese - Brazil) - Freelance AI Trainer Project BrazilPortuguese Meridial2 roles
$8 to $65/hr Science Specialist (Fluent in Korean) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Korean) - Freelance AI Trainer Project South KoreaKorean Meridial2 roles
$8 to $65/hr Science Specialist (Fluent in Japanese) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Japanese) - Freelance AI Trainer Project JapanJapanese Meridial2 roles
$8 to $65/hr Science Specialist (Fluent in Italian) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Italian) - Freelance AI Trainer Project ItalyItalian Meridial2 roles
$8 to $65/hr Science Specialist (Fluent in Indonesian) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Indonesian) - Freelance AI Trainer Project IndonesiaIndonesian Meridial2 roles
$8 to $65/hr Science Specialist (Fluent in Hindi) - Freelance AI Trainer ProjectScience Specialist (Fluent in Hindi - Roman Script) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Hindi) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Hindi - Roman Script) - Freelance AI Trainer Project IndiaHindi Meridial4 roles
$8 to $65/hr Science Specialist (Fluent in German) - Freelance AI Trainer Project WorldwideGerman Meridial $8 to $65/hr Science Specialist (Fluent in French) - Freelance AI Trainer Project SwitzerlandFrench Meridial $8 to $65/hr Science Specialist (Fluent in Dutch) - Freelance AI Trainer Project NetherlandsDutch Meridial
$8 to $65/hr Science Specialist (Fluent in Arabic) - Freelance AI Trainer ProjectSTEM Specialist (Fluent in Arabic) - Freelance AI Trainer Project EgyptArabic Meridial2 roles
$8 to $65/hr STEM Specialist (Fluent in Russian) - Freelance AI Trainer Project Poland, SlovakiaRussian Meridial $8 to $65/hr STEM Specialist (Fluent in German) - Freelance AI Trainer Project United StatesGerman Meridial $8 to $65/hr STEM Specialist (Fluent in French) - Freelance AI Trainer Project Remote, 3 countriesFrench Meridial $8 to $65/hr STEM Specialist (Fluent in Dutch) - Freelance AI Trainer Project WorldwideDutch Meridial $6 to $65/hr Mathematics Specialist (Fluent in Swedish) - Freelance AI Trainer Project WorldwideSwedish Meridial $6 to $65/hr Mathematics Specialist (Fluent in Spanish - Spain) - Freelance AI Trainer Project SpainSpanish Meridial $6 to $65/hr Mathematics Specialist (Fluent in Spanish - Latin America) - Freelance AI Trainer Project Remote, 4 countriesSpanish Meridial $6 to $65/hr Mathematics Specialist (Fluent in Russian) - Freelance AI Trainer Project Poland, SlovakiaRussian Meridial $6 to $65/hr Mathematics Specialist (Fluent in Portuguese - Portugal) - Freelance AI Trainer Project PortugalPortuguese Meridial $6 to $65/hr Mathematics Specialist (Fluent in Portuguese - Brazil) - Freelance AI Trainer Project BrazilPortuguese Meridial $6 to $65/hr Mathematics Specialist (Fluent in Korean) - Freelance AI Trainer Project WorldwideKorean Meridial $6 to $65/hr Mathematics Specialist (Fluent in Japanese) - Freelance AI Trainer Project JapanJapanese Meridial $6 to $65/hr Mathematics Specialist (Fluent in Italian) - Freelance AI Trainer Project ItalyItalian Meridial $6 to $65/hr Mathematics Specialist (Fluent in Indonesian) - Freelance AI Trainer Project IndonesiaIndonesian Meridial
$6 to $65/hr Mathematics Specialist (Fluent in Hindi) - Freelance AI Trainer ProjectMathematics Specialist (Fluent in Hindi - Roman Script) - Freelance AI Trainer Project IndiaHindi Meridial2 roles
$6 to $65/hr Mathematics Specialist (Fluent in German) - Freelance Trainer Project WorldwideGerman Meridial $6 to $65/hr Mathematics Specialist (Fluent in French) - Freelance AI Trainer Project Switzerland, LuxembourgFrench Meridial $6 to $65/hr Mathematics Specialist (Fluent in Dutch) - Freelance AI Trainer Project NetherlandsDutch Meridial $6 to $65/hr Mathematics Specialist (Fluent in Arabic) - Freelance AI Trainer Project EgyptArabic Meridial

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Open these 178 roles in the finder

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Who hires for STEM

Open STEM roles on each platform, and what share of that platform's own list they are.

Meridial 91 16% of 570 SME Careers 46 18% of 261 micro1 32 12% of 266 Mindrift 4 44% of 9 Terac 2 4% of 47 Welocalize 2 1% of 367 Innodata 1 5% of 21

STEM lists $36.50/hr, close to the whole list's $36.50/hr

Middle half of listed hourly rates, median marked. Languages is the nearest field by median.

STEM $36.50$36.50 to $70
All roles $36.50$29.75 to $55
Languages $35.50$25 to $36.50

How the numbers are made: bars above count STEM roles out of 178, and the share is of each platform's own open list. Pay uses the 176 of 178 STEM roles, 679 of 979 in Languages and 1,340 of 1,695 overall that list an hourly rate in USD, each once at the midpoint of its range; "up to" rates count at that maximum, so they read high. Pay report of 12 October 2026.