Looking for remote AI training and data labeling work open to applicants located in Brazil? This work can involve preparing and reviewing examples used by artificial-intelligence systems, while each posting defines its own requirements. OpenTrain is the hiring organization for roles on OpenTrain. Candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support.
Apply your enterprise sales expertise to create and evaluate AI training tasks covering complex deal cycles, stakeholder alignment, negotiation, forecasting, and strategy. Remote contractor engagement for up to 9 weeks, with flexible part-time or near-full-time availability.
Posted Aug 16, 2026
Create realistic technical sales scenarios, evaluation prompts, rubrics, and gold-standard solutions that help improve frontier AI systems. This remote, nine-week contractor engagement is designed for technical sales, sales engineering, and solutions architecture professionals.
Posted Aug 16, 2026
Use your emergency communications expertise to evaluate AI responses in simulated dispatch scenarios. This remote, project-based contract offers flexible work of less than 20 hours per week at $30–$65 per hour.
Posted Aug 16, 2026
Turn public records and lengthy source materials into accurate, non-opinion articles and summaries that help train next-generation AI systems. Contract work is worldwide, remote, and pays $40–$75 per hour for 20+ hours weekly.
Posted Aug 16, 2026
Use your technical B2B sales expertise to evaluate lead qualification, proposals, objections, and customer decision-making for AI training. Remote contractor work in English, with an indicated rate of $45-$85 per hour.
Posted Aug 16, 2026
Lead technology initiatives and help improve AI models through practical project-management feedback. This remote, part-time contractor role offers $70–$130 per hour and requires 20+ hours per week.
Posted Aug 16, 2026
Use your Tier 2 or Tier 3 IT expertise to help train AI through support-ticket analysis, troubleshooting documentation, and clear technical feedback. This remote contractor role offers flexible scheduling and $30–$55 per hour.
Posted Aug 16, 2026
Design learning programs, digital educational content, and assessments that help shape how next-generation AI systems learn and reason. This remote, part-time contractor role offers flexible work for instructional design and adult-learning specialists.
Posted Aug 16, 2026
Use your preclinical drug development expertise to review scientific data, evaluate AI model outputs, and shape datasets for frontier AI systems in chemistry and drug discovery. Remote contract work pays $85–$142 per hour.
Posted Aug 16, 2026
Review first-person video action segments, verify start and end boundaries, and help improve AI training datasets. This remote contract pays $20–$25 per hour for approximately two weeks, with a 40-hour weekly commitment.
Posted Aug 16, 2026
Evaluate AI-generated music and lyrics using your Telugu language and music expertise. Work remotely on a flexible contract, earning $11–$19 per hour for up to six months.
Posted Aug 16, 2026
Record synchronized first-person video of household activities from home to help train AI and robotics systems. Earn $6 per hour for approved footage, with a potential $20 signing bonus and headstrap reimbursement after 20 hours.
Posted Aug 15, 2026
Apply your investment expertise to create challenging finance tasks and evaluate AI-generated analysis. This worldwide, part-time contractor role requires 20+ hours per week and advanced financial modeling experience.
Posted Aug 15, 2026
Review multilingual, multi-speaker recordings and annotations for transcription, diarization, timestamps, metadata, audio fidelity, and safety. This flexible contractor role is open worldwide and requires 20+ hours per week.
Posted Aug 15, 2026
Evaluate next-generation AI coding agents by reviewing coding trajectories, debugging Python outputs, and validating technical results. This fully remote, one-month contract requires senior Python engineering experience and practical LLM or agent development expertise.
Posted Aug 15, 2026
Create analytical questions, scenarios, explanations, and text-based training data that help improve large language models. This worldwide, remote contractor role offers flexible part-time work of 20+ hours per week.
Posted Aug 15, 2026
Apply advanced historical knowledge to review prompts and AI-generated work for factual accuracy, reasoning quality, and guideline compliance in a remote contract supporting language-model evaluation.
Posted Aug 15, 2026
Use your technical or scientific sales expertise to create and evaluate realistic AI training tasks covering discovery, solution positioning, proposals, objections, and account growth. Remote contractor work requires at least 4 hours daily, with up to 40 hours weekly.
Posted Aug 15, 2026
Use your expertise in politics, governance, elections, public policy, and international relations to evaluate AI responses, design challenging prompts, and improve the accuracy of advanced language models in a remote contractor role.
Posted Aug 15, 2026
Use your technology-contract expertise to train and evaluate legal AI through drafting, redlining, negotiation simulations, and review of AI-generated responses. Remote, part-time contract work pays $80–$200 per hour.
Posted Aug 15, 2026
Design and validate challenging computational benchmarks that test advanced AI systems on particle and nuclear physics research workflows. Remote contract work pays $70–$100 per hour with a flexible 20+ hour weekly commitment.
Posted Aug 15, 2026
Design realistic HR scenarios, reference answers, and evaluation rubrics that help AI systems handle talent management, employee relations, and organizational design. Remote contract work pays $70–$80 per hour for 20+ hours weekly.
Posted Aug 15, 2026
Edit and evaluate German speech recordings for text-to-speech and AI training workflows. Use professional audio restoration skills to improve clarity, consistency, pronunciation, and technical quality at $50 per hour, with 20+ hours of flexible remote work each week.
Posted Aug 15, 2026
Use senior insurance expertise to create realistic enterprise scenarios, reference answers, and evaluation rubrics for AI systems. This remote contractor role pays $50–$60 per hour and requires 20+ hours per week.
Posted Aug 15, 2026
Use your accounting experience to describe real workflows, tools, and professional judgment for AI training. This remote contract opportunity pays $80–$120 per hour and requires 20+ hours per week.
Posted Aug 15, 2026
Create and evaluate rigorous history and political science benchmarks used in AI research. This fully remote contract role offers asynchronous work at $44–$56 per hour for qualified doctoral-level subject-matter experts.
Posted Aug 15, 2026
Use your enterprise IT leadership experience to evaluate AI-generated solutions, workflows, architecture plans, and governance scenarios. Remote contract work pays $60–$75 per hour for about 20 hours weekly over 1–3 months.
Posted Aug 15, 2026
Apply your legal judgment to contract review, regulatory analysis, and legal-document evaluation for AI training. This remote contractor role pays $60–$75 per hour and requires an active law license plus five years of relevant practice.
Posted Aug 15, 2026
Use your financial reporting, audit, tax, and compliance expertise to help improve AI systems. This remote contractor role offers $60–$75 per hour and requires at least five years of relevant experience.
Posted Aug 15, 2026
Use your software development expertise to review code, document architecture, and create programming examples that help train AI systems. Remote contractor work pays $60–$75 per hour and requires 20+ hours per week.
Posted Aug 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.
