Find remote AI training and data labeling jobs open to applicants in Brazil.
Review short video and audio clips, rate AI-generated descriptions, and flag unclear or inappropriate content. This remote, flexible contractor project pays $8 to $10 per hour and requires strong written English.
Posted Sep 23, 2026
Review and redline technology contracts, negotiate simulated deal terms, and rate AI legal responses. Pay is $90 to $130 per hour equivalent, paid per task that meets the project specifications.
Posted Sep 22, 2026
Review technology transaction contracts and AI-generated responses for an AI training project. This part-time remote role pays $90 to $130 per hour equivalent, paid per task that meets the project specifications.
Posted Sep 22, 2026
Review corporate and M&A agreements, redline simulated negotiations, and evaluate AI-generated legal responses. Pay is $90 to $130 per hour equivalent, paid per task that meets project specifications.
Posted Sep 22, 2026
Review investment fund agreements and AI-generated legal responses using your contract expertise. This part-time role pays $90 to $180 per hour equivalent, paid per task that meets project specifications.
Posted Sep 22, 2026
Review technology contracts, redline simulated negotiations, and evaluate legal AI responses. This part-time contract role pays $90 to $110 per hour equivalent, paid per task that meets project specifications.
Posted Sep 22, 2026
Design multi-step computational life sciences tasks that test whether AI agents can inspect data, run code, solve problems, and explain results. This remote contractor role pays $280 per approved task.
Posted Sep 22, 2026
Design difficult computational genomics tasks, datasets, reference solutions, and grading criteria for AI evaluation. This remote contractor assignment lasts 5 weeks, pays $260 per approved task, and requires 20+ hours per week.
Posted Sep 22, 2026
Review AI-generated medical communications for scientific accuracy, compliance, fair balance, and audience fit. This part-time contract pays $50 to $80 per hour.
Posted Sep 21, 2026
Edit, retouch, and annotate 2D and 3D design assets for AI training. This remote contractor project runs 8 to 10 weeks and welcomes part-time artists working 25 to 30 hours per week.
Posted Sep 21, 2026
Create backend coding tasks and deterministic verifiers for AI systems. This remote contractor role offers flexible scheduling for about 15 hours per week, with $30 to $100 per hour equivalent, paid per task that meets project specifications.
Posted Sep 20, 2026
Create realistic coding challenges and verifier scripts for AI models with flexible remote work of about 15 hours per week. Pay is $30 to $100 per hour equivalent, paid per task that meets the project specifications.
Posted Sep 20, 2026
Review AI-generated motions, legal arguments, and case-law analysis using your federal civil litigation experience. This remote, part-time contractor role pays $150 to $300 per hour.
Posted Sep 19, 2026
Transcribe and review Korean and English audio for AI training, annotate files with metadata, and help improve transcription workflows. This part-time role pays $20 to $36 per hour and requires less than 20 hours per week.
Posted Sep 19, 2026
Transcribe Japanese audio, review transcripts, and add context that helps AI understand spoken language. This part-time role pays $20 to $36 per hour and requires fewer than 20 hours each week.
Posted Sep 19, 2026
Review and score AI-generated legal responses for clarity, accuracy, support, and audience fit. This contractor role pays $90 to $140 per hour and requires strong legal writing experience.
Posted Sep 19, 2026
Evaluate AI-generated writing for clarity, accuracy, tone, coherence, and instruction following. Write concise rationales for your decisions and earn $90 to $140 per hour.
Posted Sep 19, 2026
Review and compare AI-written responses, score them against clear standards, and write evidence-based feedback. This remote contractor role pays $90 to $140 per hour and requires strong written English and assessment experience.
Posted Sep 19, 2026
Listen to short AI-generated music clips and identify their instrument family and specific instrument. This remote, fixed-price project pays $150-$160 and must be completed within a flexible two-day window.
Posted Sep 19, 2026
Earn $50 to $80 per hour as a Clinical Publications AI Evaluation Author reviewing AI-generated medical writing, checking claims against clinical sources, and writing structured feedback.
Posted Sep 18, 2026
Take self-portraits and requested photos with your smartphone, then complete short questionnaires for an AI data collection project. The work is remote, open in listed countries, and pays $140 per task.
Posted Sep 18, 2026
Use senior accounting and finance experience to answer complex questions, analyze financial data, and give clear advisory recommendations for AI applications. This remote freelance engagement runs up to 40 hours per week for an initial 10 weeks.
Posted Sep 18, 2026
Review public or synthetic contracts, identify legal risks, and write clear recommendations for AI training. Pay is $80 to $180 per hour equivalent, paid per task that meets the project specifications, with fewer than 20 hours per week.
Posted Sep 17, 2026
Create, debug, translate, test, and review challenging software-engineering tasks for AI training. This remote contractor role pays $100 to $150 per hour equivalent, paid per task that meets project specifications.
Posted Sep 16, 2026
Support customer data ingestion and transfer workflows as an Associate Forward Deployed Engineer. The contractor, part-time role pays $40 to $60 per hour and involves Python, APIs, troubleshooting, and workflow automation.
Posted Sep 16, 2026
Create competitive programming problems, reference solutions, test suites, and C++ checkers for AI training. Pay is $45 to $65 per hour equivalent, paid per task that meets project specifications, with less than 20 hours per week.
Posted Sep 16, 2026
Review, build, debug, and validate software across front-end and back-end systems for AI training. Pay is $50 to $100 per hour equivalent, paid per task that meets the project specifications, with less than 20 hours per week.
Posted Sep 16, 2026
Build and improve open source software for AI training, including feature work, bug fixes, refactoring, code review, and technical explanations. Remote work takes less than 20 hours per week, with $50 to $100 per hour equivalent, paid per task that meets project specifications.
Posted Sep 15, 2026
Remote, part-time contract work for a Big Data Engineer building Python pipelines, distributed data systems, and reliable databases. Pay is $30 to $80 per hour, with applications open across 50 countries.
Posted Sep 15, 2026
Analyze behavioral cues in text, audio, and video, create detailed annotations, and evaluate AI-generated responses. This part-time contractor role pays $20 to $70 per hour and is open across several regions.
Posted Sep 15, 2026
AI training and data labeling involve human work used to prepare and review examples for artificial-intelligence systems. Depending on the individual role, tasks can include labeling images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. For applicants located in Brazil, only the individual posting can confirm whether that opportunity accepts applications from Brazil and explain the work involved.
OpenTrain is the hiring organization for these roles, and candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they will support. Review each individual posting for the details and requirements that apply to that opportunity, including whether applicants located in Brazil are eligible.
