AI training and evaluation
job platforms
215 places that pay people to train, evaluate and annotate AI models. Expert evaluation, RLHF, annotation, research panels and the aggregators that track them all, with a section for Portugal and EU eligibility.
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215 platforms shown
Expert AI work
Project-based evaluation, RLHF and domain expert work. This is where the higher rates are: coding, STEM, finance, law and medicine pay well above general annotation.
Mercor
work.mercor.com
Marketplace for expert AI projects
Mercor Experts
mercor.com
SME Careers (SuperAnnotate)
sme.careers
Roles in maths, physics, medicine, law, software, finance, linguistics
Alignerr
alignerr.com
micro1
micro1.ai
AfterQuery
afterquery.com
Terac
terac.com
Turing
turing.com
Braintrust
usebraintrust.com
Handshake AI
joinhandshake.com
Invisible Technologies
invisible.co
Pareto AI
pareto.ai
Surge AI
surge.ai
Snorkel AI
snorkel.ai
Real Train AI
realtrainai.com
Fleet AI
fleet.ai
Deccan AI
deccan.ai
Datacurve
datacurve.ai
Prime Intellect
primeintellect.ai
Epoch AI
epoch.ai
Pays contributors to write hard benchmark problems
METR
metr.org
Model evaluation research, contractor roles
Apollo Research
apolloresearch.ai
Harvey AI
harvey.ai
Legal experts for model evaluation
xAI
x.ai
AI tutor opportunities
Lower barrier to entry
Easier to get onto, usually lower pay. Good for building a track record before applying to the expert platforms.
DataAnnotation
dataannotation.tech
Outlier (Scale AI)
outlier.ai
Mindrift
mindrift.ai
Prolific
prolific.com
Paid research and AI studies
Toloka
toloka.ai
Clickworker
clickworker.com
Appen
appen.com
OneForma
oneforma.com
DataForce (TransPerfect)
dataforcecommunity.transperfect.com
TELUS Digital AI Community
telusdigital.com
Remotasks
remotasks.com
Welocalize
welocalize.com
RWS Train AI
rws.com
Amazon Mechanical Turk
mturk.com
Hive Micro
hivemicro.com
Workada
workada.com
Neevo
neevo.ai
TaskVerse
taskverse.com
uTest
utest.com
Paid testing and AI data collection projects
Applause
applause.com
The company behind uTest
Premise
premise.com
App based data collection tasks
isahit
isahit.com
Impact sourcing annotation work
Keymakr
keymakr.com
Daivergent
daivergent.com
Data work for neurodivergent contributors
Microworkers
microworkers.com
Portugal and EU specific
Remote does not automatically mean EU eligible. Eligibility is usually decided per project, so these country and language filtered sources save a lot of wasted applications. European Portuguese is treated as a distinct requirement and is worth flagging on every profile.
OpenTrain - Portugal
opentrain.ai
OpenTrain - Portuguese language
opentrain.ai
AI Trainer Work - Portuguese
aitrainer.work
Gradient C - annotation, Portugal
gradientc.com
Indeed PT - remote AI training
pt.indeed.com
Indeed PT - AI trainer
pt.indeed.com
Indeed PT - AI evaluator
pt.indeed.com
Indeed PT - LLM evaluator
pt.indeed.com
Indeed PT - data annotation
pt.indeed.com
Indeed PT - AI content reviewer
pt.indeed.com
Indeed PT - AI research remote
pt.indeed.com
Indeed PT - generative AI
pt.indeed.com
LinkedIn - AI trainer, Portugal
linkedin.com
LinkedIn - AI evaluator, Portugal
linkedin.com
LinkedIn - LLM evaluator, Portugal
linkedin.com
LinkedIn - RLHF, Portugal
linkedin.com
LinkedIn - AI trainer, EU
linkedin.com
LinkedIn - LLM evaluator, EU
linkedin.com
LinkedIn - data annotation, EU
linkedin.com
EURES
eures.europa.eu
EuroJobs
eurojobs.com
Europe Language Jobs
europelanguagejobs.com
EU-Startups Jobs
eu-startups.com
English Jobs EU
englishjobs.eu
Welcome to the Jungle
welcometothejungle.com
Landing.jobs
landing.jobs
Portuguese tech job board, remote friendly
ITJobs.pt
itjobs.pt
Net-Empregos
net-empregos.com
Sapo Emprego
emprego.sapo.pt
Expresso Emprego
expressoemprego.pt
EuroTechJobs
eurotechjobs.com
EU Remote Jobs
euremotejobs.com
Aggregators and trackers
The fastest way to cover dozens of platforms at once. Worth bookmarking rather than applying through directly.
AITraining.jobs
aitraining.jobs
Tracks 58+ platforms with country filtering
AITraining.jobs - pay data
aitraining.jobs
AITraining.jobs - platform comparison
aitraining.jobs
AITraining.jobs - highest paying
aitraining.jobs
AITraining.jobs - coding roles
aitraining.jobs
OpenTrain
opentrain.ai
AI Trainer Work
aitrainer.work
Entrena AI
entrenaia.com
GetAIWork
getaiwork.com
GetAIWork - platforms hiring now
getaiwork.com
AI Training Jobs IT
aitrainingjobs.it
DataAnnotationJobs.org
dataannotationjobs.org
Neon Labs Hub
neonlabshub.com
RemoWork
remowork.life
Research and human feedback studies
Not conventional jobs, but AI labs use these panels for preference data, evaluation and experiments. Portugal is often eligible depending on the study.
Prolific
prolific.com
User Interviews
userinterviews.com
Respondent
respondent.io
dscout
dscout.com
CleverX
cleverx.com
Userlytics
userlytics.com
UserTesting
usertesting.com
Userbrain
userbrain.com
TestingTime
testingtime.com
Testbirds
testbirds.com
PlaytestCloud
playtestcloud.com
Userfeel
userfeel.com
Toloka
toloka.ai
CloudResearch Connect
cloudresearch.com
Positly
positly.com
Wynter
wynter.com
Paid B2B research panel
Askable
askable.com
TryMyUI
trymyui.com
BetaTesting
betatesting.com
Language, translation and localization
Especially relevant from Portugal. Audio, transcription, localization and evaluation roles routinely ask for European Portuguese plus English.
Welocalize
welocalize.com
RWS Train AI
rws.com
RWS careers
rws.com
DataForce (TransPerfect)
dataforcecommunity.transperfect.com
TransPerfect careers
transperfect.com
OneForma
oneforma.com
Appen
appen.com
TELUS Digital careers
telusdigital.com
LXT
lxt.ai
Sigma AI
sigma.ai
Defined.ai
defined.ai
Welo Data
welodata.ai
Datamundi
datamundi.ai
Multilingual data crowd, formerly Summa Linguae
Productive Playhouse
productiveplayhouse.com
Lilt
lilt.com
Gengo
gengo.com
Rev
rev.com
Transcription, captions and subtitle work
TranscribeMe
transcribeme.com
GoTranscript
gotranscript.com
Scribie
scribie.com
Verbit
verbit.ai
Smartling
smartling.com
Unbabel
unbabel.com
Lisbon based
Translated
translated.com
Lionbridge
lionbridge.com
Centific
centific.com
TAUS
taus.net
Data annotation and computer vision
Labeling, segmentation, audio and image work. Broad availability, lower rates than expert evaluation.
iMerit
imerit.net
Sama
sama.com
Innodata
innodata.com
CloudFactory
cloudfactory.com
Cogito Tech
cogitotech.com
Anolytics
anolytics.ai
Shaip
shaip.com
Kili Technology
kili-technology.com
V7 Labs
v7labs.com
SuperAnnotate
superannotate.com
Labelbox
labelbox.com
Centaur Labs
centaur.ai
Medical data labeling
TaskUs
taskus.com
Abaka AI
abaka.ai
Twine
twine.net
Wirestock
wirestock.io
Uber AI Solutions
uber.com
Taskverse
taskverse.com
AI lab and company career pages
Not gig platforms. Remote EU contract, evaluation and research positions surface here from time to time.
Anthropic
anthropic.com
OpenAI
openai.com
Google DeepMind
deepmind.google
Cohere
cohere.com
xAI
x.ai
Perplexity
perplexity.ai
Mistral AI
mistral.ai
Aleph Alpha
aleph-alpha.com
Hugging Face
huggingface.co
Reka
reka.ai
Inflection AI
inflection.ai
Scale AI
scale.com
Databricks
databricks.com
NVIDIA
nvidia.com
Meta
metacareers.com
Microsoft AI
microsoft.com
google.com
Amazon
amazon.jobs
Apple
apple.com
AI Singapore
aisingapore.org
General remote job boards
Useful for AI evaluator, AI trainer and RLHF roles that never get posted on the specialist platforms.
RemoteOK
remoteok.com
We Work Remotely
weworkremotely.com
Remote.co
remote.co
Remotive
remotive.com
Working Nomads
workingnomads.com
Wellfound
wellfound.com
FlexJobs
flexjobs.com
Virtual Vocations
virtualvocations.com
RemoteJobs
remotejobs.com
LinkedIn Jobs
linkedin.com
Glassdoor
glassdoor.com
Indeed
indeed.com
Adzuna
adzuna.com
Jooble
jooble.org
JobRapido
jobrapido.com
JobServe
jobserve.com
ZipRecruiter
ziprecruiter.com
Europass
europass.europa.eu
Freelance marketplaces
AI labs and data vendors post evaluation, annotation and prompt writing gigs here as ordinary freelance contracts. Worth a saved search rather than a one time browse.
Communities and platform reviews
Where workers compare pay, flag scams and post when a platform reopens applications. Read these before signing up anywhere unfamiliar.
Before you apply
- Remote does not mean globally eligible. Most of these platforms decide eligibility per project, so check the individual listing rather than the company page.
- Expert evaluation pays far more than general labeling. Coding, STEM, finance, law and medicine sit at the top of the range.
- Language pairs are leverage. European Portuguese is treated as a separate requirement from Portuguese, so name it explicitly.
- Platforms open and close projects constantly. Aggregators are the efficient way to watch dozens of them at once.
Independent directory. Candyfloss AI is not affiliated with any platform listed and does not receive referral fees. Listings and eligibility change often, so verify on the source site.