Find remote AI training and data labeling jobs open to applicants in Brazil.
Analyze connected CRM, billing, and ticketing systems, resolve operational inconsistencies, and document complex revenue decisions. This remote contractor role pays $45 to $90 per hour.
Posted Sep 15, 2026
Review AI-generated psychological content, case studies, assessments, and conversations using mental health expertise. The role pays $100 to $200 per hour and requires advanced English plus professional fluency in at least one listed language.
Posted Sep 15, 2026
Review equity research datasets, financial models, earnings analysis, and valuation work to improve AI systems. This remote contractor role pays $175 to $300 per hour and requires deep equity research expertise.
Posted Sep 14, 2026
Use investment banking judgment to review financial research, valuation models, transaction analysis, and pitchbook materials for AI training. This remote contractor role pays $175 to $300 per hour and is open in listed countries.
Posted Sep 14, 2026
Build and review coding tasks, debug software, and evaluate AI-generated code across major programming languages. 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 14, 2026
Review short video and audio clips, assess AI-generated descriptions, and provide clear feedback that improves labeling quality. This part-time contract role is open to fluent English speakers in selected countries and does not require prior AI experience.
Posted Sep 14, 2026
Review AI systems on advanced atomic and optical physics, including ytterbium calculations and sigma versus pi transitions. Pay is $100 to $200 per hour for less than 20 hours per week.
Posted Sep 12, 2026
Review Cantonese text, speech, and AI model responses for accuracy and fluency in a part-time contract role paying $30 to $40 per hour. Apply through OpenTrain, then complete the application on the hiring site.
Posted Sep 12, 2026
Review multi-part FreeCAD assemblies and write precise technical questions with exact answers. This remote contract role pays $40 to $80 per hour and requires CAD and industrial design, mechanical engineering, or aerospace knowledge.
Posted Sep 11, 2026
Create precise, verifiable engineering questions from multi-part FreeCAD assemblies. This part-time contract role pays $40 to $80 per hour and requires strong mechanical CAD knowledge.
Posted Sep 11, 2026
Review complex aerospace assemblies and write precise questions and answers about design features, functions, and component relationships. This remote, part-time contractor role pays $40 to $80 per hour.
Posted Sep 11, 2026
Review FreeCAD-format mechanical assemblies and create precise question-and-answer sets for AI training. This part-time contractor role pays $40 to $80 per hour and requires strong mechanical CAD knowledge.
Posted Sep 11, 2026
Review Turkish and English content that helps language models improve. Research claims, summarize material, solve reasoning tasks, and provide clear feedback in a remote role requiring 20 or more hours each week.
Posted Sep 11, 2026
Help improve large language models by answering analytical questions, checking written claims, creating reasoning scenarios, and explaining your decisions in English and Norwegian. This remote contractor role requires 20 or more hours per week.
Posted Sep 11, 2026
Review Japanese and English content, solve analytical questions, and give clear feedback that helps improve AI language models. This worldwide contract role requires 20 or more hours each week and does not require prior AI training experience.
Posted Sep 11, 2026
Help improve language models by researching claims, solving analytical questions, creating reasoning examples, and reviewing French and English responses. This remote, entry-level contract requires at least 20 hours per week.
Posted Sep 11, 2026
Review and improve AI-generated answers using Spanish and English, online research, logical reasoning, and clear written feedback. This remote contractor role requires 20 or more hours each week and some overlap with US hours.
Posted Sep 11, 2026
Review curated image collections for artistic quality, originality, composition, lighting, color, styling, and technical execution. This remote contractor role pays $21 to $70 per hour and requires strong visual judgment and written feedback skills.
Posted Sep 9, 2026
Provide professional phone support for reservations, scheduling, confirmations, and other customer requests that help train AI systems. Earn $18 to $28 per hour for scheduled availability across four 5-hour shifts each week.
Posted Sep 9, 2026
Review business datasets and documents for accuracy, completeness, privacy, and consistency. This remote contract role pays USD $31 to $60 per hour and is open to candidates in listed countries.
Posted Sep 9, 2026
Support AI training by creating and reviewing CAD models, simulation models, calculations, schematics, and engineering documentation. This remote 8-week contract requires 20 to 40 hours weekly and at least 10 years of relevant experience.
Posted Sep 8, 2026
Solve advanced physics problems and create clear, reproducible derivations for AI training. This remote contractor role pays $100 to $200 per hour and requires less than 20 hours per week.
Posted Sep 8, 2026
Apply your expertise in statistical physics, quantum information, or condensed matter theory to AI training research. This remote contractor role pays $100 to $200 per hour and takes 5 to 10 or more hours per week.
Posted Sep 8, 2026
Evaluate AI models on complex software engineering problems by building coding environments, reference solutions, and expert reviews. Pay is $50 to $100 per hour equivalent, paid per task that meets the project specifications.
Posted Sep 7, 2026
Transcribe and review Mandarin and English audio to help train AI systems. This remote role offers $20 to $30 per hour equivalent, paid per task, with a 20+ hour weekly commitment.
Posted Sep 7, 2026
Transcribe and annotate Cantonese and English audio, review automated transcripts, and create time-stamped files. Pay is $20 to $35 per hour equivalent, paid per task.
Posted Sep 7, 2026
Evaluate AI-generated answers to advanced CFD problems involving meshing, turbulence, heat transfer, multiphysics, and solver setup. This remote contractor role pays $50 to $150 per hour equivalent, paid per task that meets the project specifications.
Posted Sep 7, 2026
Transcribe and review Dutch and English audio, capture linguistic details, and support AI training. The role offers $25 to $30 per hour equivalent, paid per task, with 20+ hours per week.
Posted Sep 7, 2026
Transcribe and review Portuguese audio for AI training, with occasional English content. Pay is $10 to $18 per hour equivalent, paid per task, with 20+ hours per week.
Posted Sep 7, 2026
Analyze Thai and English content, check claims, answer reasoning questions, and create feedback for AI systems. This remote contractor role requires 20+ hours per week and offers flexible work for bilingual candidates.
Posted Sep 7, 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.
