Meridial for AI trainers
The expert network built for frontier AI training
- Open jobs
- 489
- Median pay
- $37/hr
- Typical pay
- $5–65/hr
- 32 reviews
- 1.5
About Meridial
Meridial is the expert marketplace of Invisible Technologies, an AI company that started in 2015. It hires lawyers, doctors, engineers, coders, linguists, and other experts as independent contractors. They write and rank AI answers, red-team models, and build training environments for AI labs and companies. Invisible says it has trained over 80% of the leading AI models. Most Meridial roles are posted as "Freelance AI Trainer Project" jobs, and the same role is often posted once per country.
- Founded
- 2015 (Invisible Technologies)
- Founder
- Francis Pedraza (CEO: Matt Fitzpatrick)
- Headquarters
- San Francisco, USA
- Funding
- $100M at a valuation over $2B (2025)
- Workers
- Independent contractors
- Payment
- Payment provider, every two weeks
How hiring works
- Create a profile on meridial.ai, list your skills, and confirm your identity with your camera. You need clear written English and a computer with 8GB of RAM.
- Apply to open projects and take the skills tests. Reviewers say some tests watch your camera, microphone, and screen.
- Meridial compares your profile with its projects and contacts you when one fits. Joining does not guarantee work.
- Sign a Statement of Work that shows the rate and the expected length. Some projects also need a background check.
What workers say
Good
- You see the rate and the expected length of a project before you sign.
- Meridial says all time on a project is paid, every two weeks.
- Many open roles in law, coding, science, finance, and over 100 languages.
Watch out for
- 91% of Trustpilot reviews are 1 star. Many say they did unpaid tests and then got no work.
- Some applicants were stuck at address verification, and support replies can take weeks.
- During some tasks, Meridial can record your screen and use your camera to check that you are present.
Open jobs at Meridial
Open jobs
Pay amount
489 jobs
LaTex Specialist (Fluent in Spanish - Spain)LaTeXDocument TypesettingMathematical FormattingBibliographic ManagementPackage CustomizationTemplate Development+6$8–65/hr
🌍 Worldwide
Medicine Specialist (Fluent in Japanese)Internal MedicinePharmacologyPathologyClinical DiagnosticsMedical EthicsHuman Physiology+7$8–65/hr
🌍 Worldwide
Medicine Specialist (Fluent in German)Internal MedicinePharmacologyPathologyClinical DiagnosticsMedical EthicsHuman Physiology+7$8–65/hr
🌍 Worldwide
Medicine Specialist (Fluent in French)Internal MedicinePharmacologyPathologyClinical DiagnosticsMedical EthicsHuman Physiology+7$8–65/hr
🌍 Europe
Insurance Specialist (Fluent in French)UnderwritingClaims ProcessingPolicy DesignActuarial AnalysisReinsuranceRisk Management+7$8–65/hr
🌍 Africa, Europe and North America
Healthcare Specialist (Fluent in French)Clinical WorkflowsPatient CareDiagnosticsPublic HealthHealth Systems ManagementEvidence-Based Practice+7$8–65/hr
🌍 Africa, Europe and North America
Education Specialist (Fluent in French)Curriculum DevelopmentInstructional DesignPedagogyAssessment StrategiesEducational PsychologyClassroom Technology+7$8–65/hr
🌍 Africa, Europe and North America
Environment Specialist (Fluent in French)Environmental ScienceClimate ChangeEnvironmental Impact AssessmentPollution ControlEcosystem ManagementBiodiversity Conservation+7$8–65/hr
🌍 Africa, Europe and North America
HR Specialist (Fluent in French)Talent AcquisitionPerformance ManagementCompensation and BenefitsEmployee RelationsOrganizational DevelopmentLabor Law+6$8–65/hr
🌍 Africa, Europe and North America
Manufacturing Specialist (Fluent in French)Production SystemsLean ManufacturingQuality ControlProcess OptimizationIndustrial AutomationSupply Chain Management+7$8–65/hr
🌍 Algeria, Belgium, Canada, Switzerland
Finance Specialist (Fluent in French)Financial ModelingAccountingInvestment AnalysisFinancial MarketsRisk ManagementCorporate Finance+7$8–65/hr
🌍 Algeria, Belgium, Canada, Switzerland
Wetlab Protocol SpecialistWetlab TechniquesProtocol DevelopmentExperimental DesignSterile TechniqueReagent PreparationQuality Control+7$8–65/hr
🇺🇸 US
Viral Transmission SpecialistViral TransmissionEpidemiologyHost-Pathogen InteractionsVector BiologyInfection ControlOutbreak Investigation+7$8–65/hr
🇺🇸 US
Synthetic Biology SpecialistSynthetic BiologyGenetic Circuit DesignMetabolic EngineeringCRISPR/Cas SystemsSystems BiologyBiomanufacturing+7$8–65/hr
🇺🇸 US
Plant Viruses SpecialistPlant VirologyVirus-Host InteractionsVector BiologyPlant Disease EpidemiologyMolecular DiagnosticsELISA+7$8–65/hr
🇺🇸 US
Pathogen Assays SpecialistMolecular DiagnosticsImmunoassaysPCRqPCRELISAAssay Validation+7$8–65/hr
🇺🇸 US
Isolating Pathogens SpecialistPathogen IsolationMicrobial CultureSelective MediaAseptic TechniqueClinical MicrobiologyGram Staining+7$8–65/hr
🇺🇸 US
Human Pathogens and Clinic SpecialistClinical MicrobiologyClinical DiagnosticsHost-Pathogen InteractionsAntimicrobial ResistanceInfection ControlCulture and Staining+7$8–65/hr
🇺🇸 US
Fungi Pathogens SpecialistMedical MycologyAntifungal ResistanceHost-Fungus InteractionsFungal VirulenceClinical DiagnosticsFungal Culture+7$8–65/hr
🇺🇸 US
Epidemiology SpecialistEpidemiologyStudy DesignDisease SurveillanceOutbreak InvestigationBiostatisticsRisk Factor Analysis+6$8–65/hr
🇺🇸 US
Antibiotic Resistance SpecialistAntibiotic ResistanceMicrobial GeneticsBacterial PathogenesisHorizontal Gene TransferAntimicrobial StewardshipClinical Microbiology+7$8–65/hr
🇺🇸 US
Photoshop SpecialistPhotoshopPhoto CompositingPhoto RetouchingColor CorrectionLayer MaskingAdobe Creative Suite+6$8–65/hr
🇺🇸 US
Biology SpecialistCell BiologyMolecular BiologyGeneticsPhysiologyEcologyEvolutionary Biology+7$8–65/hr
🇺🇸 US
English Language SpecialistEnglish GrammarSyntaxMorphologySemanticsPhoneticsPragmatics+5$6–65/hr
🌍 Asia and North America
Estonian Language SpecialistEstonian GrammarSyntaxMorphologySpellingPhonologyPragmatics+6$8–65/hr
🇸🇪 Sweden
Czech Language SpecialistCzech GrammarSyntaxMorphologyPhonologyPragmaticsNoun Declension+6$8–65/hr
🇨🇿 Czechia
Norwegian Language SpecialistNorwegian GrammarSyntaxMorphologyPhonologyPragmaticsBokmål and Nynorsk+6$8–65/hr
🌍 Europe
Finnish Language SpecialistFinnish GrammarSyntaxMorphologySpellingPhonologyPragmatics+6$8–65/hr
🌍 Europe and North America
Basque Language SpecialistBasque GrammarSyntaxMorphologySpellingPhonologyPragmatics+6$6–65/hr
🌍 Worldwide
Galician Language SpecialistGalician GrammarSyntaxMorphologySpellingPhonologyPragmatics+6$8–65/hr
🇪🇸 Spain
Hungarian Language SpecialistHungarian GrammarSyntaxMorphologyPhonologyPragmaticsVowel Harmony+6$8–65/hr
🇭🇺 Hungary
Bulgarian Language SpecialistBulgarian GrammarSyntaxMorphologySpellingPhonologyPragmatics+6$8–65/hr
🌍 Europe
Slovak Language SpecialistSlovak GrammarSyntaxMorphologyPhonologyPragmaticsNoun Declension+6$8–65/hr
🇸🇰 Slovakia
Croatian Language SpecialistCroatian GrammarSyntaxMorphologyPhonologyPragmaticsCase Inflection+6$8–65/hr
🇧🇦 Bosnia & Herzegovina
Serbian Language SpecialistSerbian GrammarSyntaxMorphologyPhonologyPragmaticsCyrillic and Latin Scripts+6$8–65/hr
🇧🇦 Bosnia & Herzegovina
Afrikaans Language SpecialistAfrikaans GrammarSyntaxMorphologyPhonologyPragmaticsVerb Tense and Aspect+6$8–65/hr
🇿🇦 South Africa
Tagalog Language SpecialistTagalog GrammarSyntaxMorphologyPhonologyPragmaticsVerb Focus and Aspect+6$8–65/hr
🇵🇭 Philippines
Persian Language SpecialistPersian GrammarSyntaxMorphologyPhonologyPragmaticsEzafe Constructions+6$8–65/hr
🇨🇦 Canada
Ukrainian Language SpecialistUkrainian GrammarSyntaxMorphologyPhonologyPragmaticsCase Systems+6$8–65/hr
🌍 North America and Europe
Hebrew Language SpecialistHebrew GrammarSyntaxMorphologyPhonologyPragmaticsHebrew Script and Vocalization+6$8–65/hr
🌍 Israel and US
Romanian Language SpecialistRomanian GrammarPhoneticsMorphologySyntaxSemanticsPragmatics+6$6–65/hr
🇷🇴 Romania
Polish Language SpecialistPolish GrammarPhoneticsMorphologySyntaxSemanticsPragmatics+6$6–65/hr
🇵🇱 Poland
Malay Language SpecialistMalay GrammarSyntaxMorphologyPhoneticsSemanticsPragmatics+6$6–65/hr
🇲🇾 Malaysia
Latvian Language SpecialistLatvian GrammarSyntaxMorphologyPhoneticsSemanticsPragmatics+6$6–65/hr
🇱🇻 Latvia
Lithuanian Language SpecialistLithuanian GrammarSyntaxMorphologyPhoneticsSemanticsPragmatics+6$6–65/hr
🇱🇹 Lithuania
Greek Language SpecialistGreek GrammarSyntaxMorphologyPhonologySemanticsPragmatics+5$6–65/hr
🇬🇷 Greece
Swahili Language SpecialistSwahili GrammarSyntaxMorphologySemanticsPhoneticsPragmatics+6$6–65/hr
🌍 Worldwide
Statistics SpecialistProbability TheoryStatistical ModelingData AnalysisHypothesis TestingRegression AnalysisBayesian Inference+7$6–65/hr
🇺🇸 US
Microbiology SpecialistBacteriologyVirologyParasitologyMycologyMicrobial GeneticsAntibiotic Resistance+6$6–65/hr
🇺🇸 US
Cybersecurity SpecialistNetwork SecurityEthical HackingDigital ForensicsThreat IntelligenceCryptographyMalware Analysis+7$6–65/hr
🇺🇸 US
No jobs match these filters. Try a different search or clear the filters.
Open jobs by category
Languages221 open jobs
STEM85 open jobs
Coding57 open jobs
Voice & Video52 open jobs
Generalist31 open jobs
Medical19 open jobs
Finance11 open jobs
Creative10 open jobs
Legal3 open jobs
Hourly pay of open jobs
- Under $2527 open jobs
- $25–50445 open jobs
- $50–7513 open jobs
- $75–1001 open jobs
- $100–1502 open jobs
- $150–2000 open jobs
- $200 or more1 open jobs
Frequently Asked Questions about Meridial
How much does Meridial pay?
Meridial has 489 open jobs on this site. The median pay is $37/hr, and most jobs pay $5–65/hr. Each job page shows its own rate.
How does Meridial pay workers?
Meridial pays every two weeks to the payment account in your profile, through a third-party payment provider. Each project has a Statement of Work with the rate, set before you start, and Meridial says all time on a project is paid. Many job posts give a range such as $8 to $65 an hour, and the exact rate depends on your experience, skills, and country. To pay you, Meridial can ask for a government ID and a tax ID. You pay your own taxes.
How do I get hired at Meridial?
1. Create a profile on meridial.ai, list your skills, and confirm your identity with your camera. You need clear written English and a computer with 8GB of RAM. 2. Apply to open projects and take the skills tests. Reviewers say some tests watch your camera, microphone, and screen. 3. Meridial compares your profile with its projects and contacts you when one fits. Joining does not guarantee work. 4. Sign a Statement of Work that shows the rate and the expected length. Some projects also need a background check.
Is Meridial legit?
Meridial is a real company. It belongs to Invisible Technologies, a San Francisco company founded in 2015 that raised $100M at a valuation over $2B in 2025. Invisible's customers include Microsoft and AWS. Meridial says it pays every two weeks. But it has 1.5 of 5 on Trustpilot from 32 reviews, and many reviewers say they did unpaid tests and then got no work.
How are Meridial and Invisible Technologies related?
Meridial is the expert marketplace of Invisible Technologies. Invisible sells AI training data and AI software to companies, and Meridial finds the experts who do the work. You work as an independent contractor, not as an employee of Meridial or Invisible. Meridial job posts are on Greenhouse under the name "agency", and some emails come from the invisible.email domain.
What is an AI trainer job?
AI trainers help companies improve AI models. You review and rate model answers, write example answers, find mistakes, or record voice and video data. Experts in law, medicine, coding, languages, and other fields teach models how a professional thinks. Most of this work is remote, flexible, and paid by the hour.
Are AI trainer jobs remote?
Yes. Every job on this site is remote, and most have flexible hours. Some jobs accept people from certain countries only, so check the 🌍 location on each job before you apply.
What skills or degrees do I need?
It depends on the job. Generalist jobs need clear writing and attention to detail. Expert jobs usually ask for a degree or work experience in the field, such as a law license or medical training. Language jobs need native or fluent skill in that language. Coding jobs need real programming experience.