Find remote AI training and data labeling jobs open to applicants in Brazil.
Create original Urdu poems, ghazals, verses, and social media captions on themes such as love, life, friendship, separation, nature, and spirituality. Pay is $30 to $150 per hour.
Posted Nov 14, 2026
Annotate aerial and satellite images pixel by pixel using a browser-based tool. This worldwide contract role pays $0.05 per label and requires 20+ hours per week.
Posted Nov 14, 2026
Review AI safety evaluations for policy alignment, reasoning quality, scoring accuracy, and annotation completeness. This remote role is open worldwide and requires professional English fluency with a 20+ hour weekly commitment.
Posted Nov 14, 2026
Apply advanced physics knowledge to solve, review, and explain challenging problems in gravity, cosmology, and holography. This part-time contract role pays $100 to $170 per hour.
Posted Nov 14, 2026
Help train AI in Arabic by rating model responses and writing prompts in Modern Standard and colloquial Arabic. This expert contract role pays $15 to $50 per hour and is open worldwide.
Posted Nov 14, 2026
Review and improve research-level AI training benchmarks in quantum optics and atomic physics. This remote contractor role offers flexible scheduling and pays $100 to $170 per hour.
Posted Nov 14, 2026
Apply advanced physics expertise to solve, audit, and adjudicate research-level benchmark problems remotely and asynchronously for $100 to $170 per hour. A PhD or postdoctoral background and LaTeX proficiency are required.
Posted Nov 14, 2026
Work remotely on South African English audio annotation, reviewing multi-speaker speech, transcripts, accents, dialects, and cultural language markers. The role pays $20 to $45 per hour and is open to candidates in listed countries.
Posted Nov 14, 2026
Classify instruments in short AI-generated audio clips using your music training and listening skills. This remote contract role requires 20+ hours per week, an English-speaking work style, and relevant music experience.
Posted Nov 13, 2026
Create and review CAD models, engineering simulations, calculations, schematics, and Python-based technical tasks used to evaluate AI systems. This contractor role requires 20 to 40 hours per week, with four hours of Pacific Time overlap.
Posted Nov 13, 2026
Evaluate AI-generated nutrition content, food records, and dietary data for scientific accuracy, safety, and cultural relevance. This remote, flexible contractor assignment requires biology, nutrition, dietetics, food science, or related knowledge.
Posted Nov 13, 2026
Create reproducible bioinformatics and computational genomics research tasks for AI training and evaluation. This remote contractor assignment pays $200 per approved task and requires 20+ hours per week.
Posted Nov 13, 2026
Lead software security evaluation for AI coding models. Manage multiple pods, review vulnerability tasks, guide technical contributors, and use delivery data to plan capacity with a commitment of 20+ hours per week.
Posted Nov 13, 2026
Review AI responses to ground combat and special-operations case studies, focusing on tactical reasoning, uncertainty, lawful boundaries, and operational value. This remote part-time contractor role pays $75 to $130 per hour.
Posted Nov 13, 2026
Use equity and credit research expertise to evaluate financial analysis, investment theses, risk assessments, and valuation materials for AI training. This remote contractor role pays $90 to $120 per hour and requires professional English fluency.
Posted Nov 13, 2026
Review investment banking documents, models, valuations, and AI-generated responses while giving clear expert feedback. This part-time contract role pays $90 to $120 per hour.
Posted Nov 13, 2026
Review and annotate entertainment contracts for AI training, including talent agreements, production contracts, and licensing deals. This remote contractor role pays $80 to $130 per hour and requires entertainment-law experience.
Posted Nov 13, 2026
Use civil rights legal expertise to create and review legal data annotations, assess guidelines, and explain complex reasoning for AI systems. This part-time contract role pays $80 to $130 per hour.
Posted Nov 13, 2026
Apply through OpenTrain for remote environmental law work that helps train and evaluate AI using legal documents, fact patterns, and compliance analysis. The contractor role pays $80 to $130 per hour.
Posted Nov 13, 2026
Use your B2B sales experience to evaluate prospect research, lead qualification, cold outreach, and email sequences in a remote, part-time AI training project. Pay is $35 to $65 per hour.
Posted Nov 12, 2026
Use your go-to-market and revenue operations experience to review business scenarios, improve AI systems, and provide clear feedback. This remote, part-time contract pays $50 to $90 per hour.
Posted Nov 12, 2026
Operate specialist desktop software such as ERPNext, UGENE, or Flow5 to complete precise AI benchmarking workflows. This remote contractor project requires 20+ hours per week, lasts about four weeks, and pays per task.
Posted Nov 12, 2026
Lead a remote pod creating and reviewing software security tasks for AI coding models. This expert contract role requires 20+ hours weekly, six years of software engineering experience, and strong vulnerability research skills.
Posted Nov 12, 2026
Complete coding-heavy AI training tasks involving machine learning models, Python, evaluation systems, and performance optimization. Work remotely for about 15 hours per week, with $60 to $120 per hour equivalent, paid per accepted task.
Posted Nov 12, 2026
Review AI-generated answers about Medicare eligibility, enrollment, coverage, benefits, and appeals. This remote contractor role pays $20 to $50 per hour with flexible scheduling.
Posted Nov 12, 2026
Review passport applications, identity documents, and acceptance scenarios to help train AI systems. This remote contractor role pays $20 to $50 per hour and values passport processing expertise.
Posted Nov 12, 2026
Review AI-generated guidance about veterans benefits, claims, advocacy, and support resources. Use your Veterans Service Officer expertise to assess accuracy, clarity, empathy, and regulatory alignment for $20 to $50 per hour.
Posted Nov 12, 2026
Use your financial aid expertise to write, review, and improve content that helps train AI systems. This remote contract role pays $20 to $50 per hour and is open across many countries.
Posted Nov 12, 2026
Evaluate conversational AI by comparing assistant responses, rating quality, and writing concise feedback. This remote project runs November 15 to November 18, requires about 7.5 total hours, and pays $40 to $70 per hour.
Posted Nov 12, 2026
Build and run electromagnetic and circuit simulations for high-speed PCB designs, analyze signal behavior, and automate workflows with Python. This contract role is open worldwide and requires strong signal integrity and electromagnetic engineering skills.
Posted Nov 12, 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.
