Looking for remote AI training or data labeling work open to applicants located in Portugal? OpenTrain is the hiring organization for these roles. Candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support. Each live posting determines eligibility and provides the responsibilities, qualifications, hours, location rules, pay, and other details for that role.
Review Thai audio and AI-generated speech for pronunciation, fluency, intonation, and linguistic authenticity. Earn $30-$65 per hour in flexible, worldwide remote contract work through OpenTrain.
Posted Aug 14, 2026
Review Turkish audio clips and speaker or model outputs for fluency, pronunciation, intonation, and linguistic authenticity. This flexible contractor role offers $30-$65 per hour for native Turkish speakers with B2+ English.
Posted Aug 14, 2026
Review Polish audio and model-generated language for nativeness, fluency, pronunciation, and intonation. Use your language expertise in a flexible, worldwide contractor role paying $30-$65 per hour.
Posted Aug 14, 2026
Review Vietnamese speech and AI-generated audio for nativeness, fluency, pronunciation, and intonation in a remote contractor role paying $30-$65 per hour. Bring native Vietnamese, B2 English, and at least 20 hours per week.
Posted Aug 14, 2026
Evaluate robotics and human-activity video clips, compare actions, and refine AI-generated annotations in a remote contractor project paying $15-$80 per hour.
Posted Aug 14, 2026
Turn physics, chemistry, or materials science expertise into rigorous AI evaluation tasks, research artifacts, and grading rubrics. Work remotely for $30 to $50 per hour, 20+ hours weekly, through OpenTrain.
Posted Aug 13, 2026
Use consulting, finance, or corporate strategy expertise to create board decks, investment memos, Excel models, and evaluation rubrics for advanced AI training. This remote contractor role is open to specialists in North America and Europe.
Posted Aug 13, 2026
Create rigorous AI benchmark tasks from scientific literature, laboratory protocols, and primary data. This worldwide, part-time contract role pays $30-$50 per hour and suits life sciences researchers with strong methodological judgment.
Posted Aug 13, 2026
Use advanced presentation-design expertise to create polished decks, define visual evaluation standards, and help improve AI systems. This remote contractor role offers flexible, project-based work at $20-$60 per hour.
Posted Aug 13, 2026
Use your technology-contract expertise to evaluate legal AI systems through simulated negotiations, redlining exercises, and expert feedback. This part-time remote contractor role pays $80 to $200 per hour.
Posted Aug 13, 2026
Use hands-on social science research expertise to design rigorous evaluation tasks for frontier AI benchmarking. Create surveys, coded datasets, statistical analyses, research artifacts, and detailed grading rubrics as a remote contractor.
Posted Aug 13, 2026
Use your corporate finance expertise to design rigorous tasks and evaluate AI-generated budgeting, forecasting, reconciliation, and modeling work. Remote contract work offers $50 to $100 per hour with a 20+ hour weekly commitment.
Posted Aug 13, 2026
Review transformed documents containing personally identifiable information and help improve the accuracy, privacy, and integrity of AI training data. This remote contractor role offers $31-$60 per hour with 20+ hours per week.
Posted Aug 13, 2026
Record natural Japanese speech and controlled vehicle or office sounds for AI training from a remote setup. Earn $30-$65 per hour while contributing 20+ hours weekly as a bilingual audio contributor.
Posted Aug 13, 2026
Write and edit a weekly enterprise AI newsletter covering agent testing, benchmarks, and real-world AI failures. This remote contract role offers approximately 20 hours per week at $45-$50 per hour.
Posted Aug 13, 2026
Create rigorous technical documentation, benchmark tasks, and grading rubrics that help AI systems learn from expert guidance. This worldwide contract role offers flexible part-time work at $30-$60 per hour.
Posted Aug 13, 2026
Use your native Korean fluency to record realistic audio, transcribe clips, and evaluate speech data for next-generation AI models. This remote contractor role offers $20 to $65 per hour.
Posted Aug 13, 2026
Use your Thai music expertise to evaluate generative AI lyrics for quality, originality, prompt adherence, and natural language. Work flexibly for up to six months at $18 per hour.
Posted Aug 13, 2026
Use your Slovak language and music expertise to evaluate AI-generated lyrics and music for originality, naturalness, creativity, and prompt fit. This flexible remote contract pays $20-$36 per hour.
Posted Aug 13, 2026
Evaluate AI-generated Punjabi music and lyrics for quality, originality, prompt adherence, and natural regional expression. This worldwide, part-time contract pays $15/hour and requires 20+ hours weekly.
Posted Aug 13, 2026
Use your software engineering expertise to create coding challenges, reference solutions, and evaluations that improve AI systems. This remote contractor role offers flexible work of about 15 hours per week and listed pay of $50 to $100 per hour.
Posted Aug 13, 2026
Create rigorous sociology assessments, aligned rubrics, and actionable feedback for an AI training project. This flexible worldwide contract offers 20+ hours per week at $50-$90 per hour.
Posted Aug 12, 2026
Use your civil engineering expertise to author evaluation tasks, technical documents, complex problems, and rubrics for AI models. This worldwide contractor role offers flexible work at $50-$100 per hour.
Posted Aug 12, 2026
Use your technical B2B sales expertise to evaluate AI model outputs, review professional documents, and provide clear feedback. This remote contractor role offers flexible part-time work at $45-$85 per hour.
Posted Aug 12, 2026
Use your mechanical engineering technology expertise to create technician workflow tasks, technical datasets, and grading rubrics for advanced AI benchmarks. This remote contractor role pays $30 to $70 per hour and requires less than 20 hours weekly.
Posted Aug 12, 2026
Use your contract drafting, review, and risk assessment experience to evaluate legal documents and improve AI systems. This remote contractor role pays $80–$180 per hour.
Posted Aug 12, 2026
Use your mechanical design expertise to create CAD models, interpret technical drawings, and help train advanced AI systems. This remote contractor role offers flexible work under 20 hours per week at $55-$100 per hour.
Posted Aug 12, 2026
Use advanced biostatistical expertise to create rigorous AI evaluation tasks covering clinical trials, regulatory reviews, and observational studies. Contract work pays $60-$100 per hour for 20+ hours weekly.
Posted Aug 12, 2026
Apply your securities and commodities expertise to create realistic evaluation tasks, market scenarios, and compliance-focused rubrics for frontier AI systems. This remote contractor role pays $30 to $80 per hour for approved work.
Posted Aug 12, 2026
Use your supply chain expertise to help train next-generation AI systems through ERP workflows, demand forecasting, supplier scorecards, and inventory analysis. This remote freelance role offers 20+ hours per week and pays $55 to $100 per hour.
Posted Aug 12, 2026
AI training work involves preparing and reviewing examples used by artificial-intelligence systems. Roles open to applicants located in Portugal can involve annotating images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. The individual live posting explains which responsibilities and requirements apply.
OpenTrain is the hiring organization for roles open to applicants located in Portugal. Candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they will support. Refer to each individual live posting for every other role-specific detail.
