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.
Use your civil legal expertise to evaluate AI-generated analyses involving housing, family, consumer, foreclosure, and debt matters. This worldwide, remote contract role pays $170 per hour and requires 20+ hours weekly.
Posted Jul 16, 2026
Review first-person household-task videos and create precise frame-level labels for AI training. This remote contractor role offers $10-$12 per hour and requires 20+ hours weekly.
Posted Jul 16, 2026
Evaluate ChatGPT and Claude responses, create challenging prompts, and explain model strengths and weaknesses in clear American English. Work remotely for 20+ hours per week at $20-$30 per hour.
Posted Jul 15, 2026
Use doctoral-level economics expertise to write, evaluate, and benchmark responses that help improve next-generation AI systems. This remote contractor role offers $80-$90 per hour and 20+ hours per week.
Posted Jul 15, 2026
Use advanced computer science expertise to write authoritative answers, evaluate technical solutions, and create benchmark responses for next-generation AI systems. This remote contractor role offers $80-$90 per hour and requires 20+ hours weekly.
Posted Jul 15, 2026
Use advanced biology expertise to evaluate prompts, scenarios, explanations, and AI outputs. This worldwide, part-time contract role pays $80 to $90 per hour and requires less than 20 hours weekly.
Posted Jul 15, 2026
Use your doctoral physics expertise to help train AI models through technical content creation, problem solving, and scientific output evaluation. This worldwide, remote contract role offers flexible work under 20 hours per week at $80 to $90 per hour.
Posted Jul 15, 2026
Use your PhD-level mathematics expertise to write and evaluate precise answers for advanced AI training prompts. This worldwide, part-time contract offers $80-$90 per hour and 20+ hours weekly.
Posted Jul 15, 2026
Use advanced statistical expertise to write, review, and evaluate content that helps AI systems improve. This flexible remote contractor role pays $90-$120/hour and is open worldwide.
Posted Jul 15, 2026
Use advanced chemistry expertise to evaluate AI responses, create authoritative benchmark answers, and improve model quality. This flexible remote contract pays $80 to $90 per hour.
Posted Jul 15, 2026
Create graduate-level mechanical engineering questions, rationales, and AI-material reviews for a flexible, worldwide contractor role paying $60-$130 per hour. Work 20+ hours weekly with OpenTrain.
Posted Jul 14, 2026
Use your advanced electrical engineering and teaching expertise to write graduate-level questions, build rubrics, and evaluate AI-generated technical content. This worldwide contract role offers flexible work under 20 hours per week at $40-$130 per hour.
Posted Jul 14, 2026
Evaluate AI-generated BI dashboards and performance reporting artifacts against expert quality standards in a remote, flexible contract paying $80 to $120 per hour.
Posted Jul 13, 2026
Use your program management expertise to evaluate AI-generated documents, spreadsheets, and slide decks for accuracy, rigor, and presentation quality. This remote contract offers 20+ hours per week at $80-$120 per hour.
Posted Jul 13, 2026
Use 5+ years of marketing or advertising experience to create rubrics and evaluate AI-generated and human work, including campaigns, brand strategy, copy, and presentations. Remote contractor work pays $80-$150 per hour.
Posted Jul 13, 2026
Help train computer vision systems by annotating robotic surgery videos with segmentation, bounding boxes, keypoints, and object tracking. This fully remote contract role pays $15 to $32 per hour and requires 20+ hours weekly.
Posted Jul 12, 2026
Evaluate AI-generated documents, spreadsheets, and presentations for brand, creative, and marketing quality. This remote contractor role offers $80-$120 per hour and requires 20+ hours weekly.
Posted Jul 10, 2026
Use your humanities, arts, or culture expertise to evaluate AI-generated documents, spreadsheets, and presentations. This remote contractor role pays $80-$120 per hour and requires 20 or more hours weekly.
Posted Jul 10, 2026
Review AI-generated business documents, spreadsheets, and presentations for factual accuracy, analytical rigor, and visual quality. Work remotely for $80-$120 per hour with a flexible 20+ hour weekly commitment.
Posted Jul 10, 2026
Use your personal finance expertise to evaluate AI-generated documents, spreadsheets, and slide decks for accuracy, rigor, and presentation quality. This remote freelance role pays $80-$120 per hour.
Posted Jul 10, 2026
Use your FP&A and corporate finance expertise to evaluate AI-generated documents, spreadsheets, and presentations for accuracy, rigor, and business quality. This worldwide contract role offers 20+ hours per week at $80-$120 per hour.
Posted Jul 10, 2026
Review AI-generated documents, spreadsheets, and presentations for cybersecurity and IT GRC quality, accuracy, and clarity. Work remotely for $80-$120 per hour with a flexible 20+ hour weekly engagement.
Posted Jul 10, 2026
Review AI-generated documents, spreadsheets, and slide decks for accuracy, rigor, visual quality, and presentation effectiveness. This worldwide contract role offers 20+ hours per week and pays $80-$120 per hour through OpenTrain.
Posted Jul 10, 2026
Use your product launch and experiment readiness expertise to evaluate AI-generated documents, spreadsheets, and slide decks. Review accuracy, rigor, visual quality, and presentation effectiveness remotely for $80-$120 per hour.
Posted Jul 10, 2026
Evaluate AI-generated documents, spreadsheets, and presentations against privacy and regulatory compliance standards. This remote contractor role offers 20+ hours per week and pays $80-$120 per hour.
Posted Jul 10, 2026
Use your legal contracts, diligence, and redline expertise to evaluate AI-generated documents, spreadsheets, and slide decks. This remote contractor role offers 20+ hours per week and pays $80-$120 per hour.
Posted Jul 10, 2026
Use your finance or accounting expertise to evaluate AI-generated documents, spreadsheets, and presentations. This remote contractor role pays $80-$120 per hour and requires 20+ hours weekly.
Posted Jul 10, 2026
Use your education expertise to evaluate AI-generated documents, spreadsheets, and slide decks for accuracy, rigor, aesthetics, and presentation. Work worldwide on a flexible, part-time contract at $80-$120 per hour.
Posted Jul 10, 2026
Use your people operations or recruiting expertise to evaluate AI-generated documents, spreadsheets, and slide decks. This remote contractor role offers $80-$120 per hour and requires 20+ hours weekly.
Posted Jul 10, 2026
Review AI-generated clinical, biomedical, and pharmaceutical documents, spreadsheets, and presentations for accuracy and rigor. Work remotely for $80-$120 per hour with a flexible 20+ hour weekly engagement through OpenTrain.
Posted Jul 10, 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.
