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 Arabic fluency and cultural judgment to evaluate sensitive AI prompts, identify adversarial patterns, and improve model safety. This remote contractor role offers $28-$32 per hour with a default commitment of 7 hours per week.
Posted Sep 4, 2026
Use your CAD, CAM, CNC, and manufacturing expertise to evaluate AI-generated workflows, refine review rubrics, and explain technical decisions. This worldwide, part-time contractor role offers $80 to $130 per hour.
Posted Sep 4, 2026
Use advanced mechanical engineering and CAD expertise to evaluate AI-generated technical responses, solve design problems, and improve AI reasoning. This remote contractor project requires under 20 hours per week and pays $90 per approved task.
Posted Sep 4, 2026
Use your U.S. immigration law expertise to evaluate legal AI outputs, review documents, and improve next-generation models. This remote contractor role offers $140 to $400 per hour, 20+ hours weekly, for an expected 3 to 6 months.
Posted Sep 4, 2026
Use your CAD, CAM, and CNC expertise to evaluate AI-generated manufacturing content, develop quality rubrics, and help train next-generation AI systems. This remote contractor role requires fewer than 20 hours per week.
Posted Sep 4, 2026
Use advanced parametric CAD and mechanical engineering expertise to help train next-generation AI systems. This remote contractor project pays $40-$100 per hour and is expected to run for 3 to 6 months.
Posted Sep 4, 2026
Use senior accounting expertise to evaluate financial reports, audit procedures, models, tax compliance, and legal documents for AI training. This remote contractor project runs 1 to 3 months and pays $58-$110 per hour.
Posted Sep 4, 2026
Capture naturalistic third-person video for next-generation AI systems using an action or 360-degree camera. Work worldwide as an entry-level contractor for 20+ hours per week at $20 per hour.
Posted Sep 3, 2026
Record real-world 360-degree video for AI training at $20 per hour, including walking, indoor, outdoor, and vehicle activities. Work 20+ hours weekly as a remote contractor with OpenTrain.
Posted Sep 3, 2026
Review and correct Castilian Spanish audio transcripts, including word-level edits, formatting, and timestamps. This remote, part-time contract pays $10-$35 per hour and offers flexible work starting at 20 hours weekly.
Posted Sep 3, 2026
Review and refine Castilian Spanish audio transcripts for AI speech systems in a remote contract role paying $10-$35 per hour. Work 20+ hours weekly while applying your language expertise to precise, high-impact audio data.
Posted Sep 3, 2026
Review and correct Brazilian Portuguese audio transcripts, including words, punctuation, timestamps, and timing alignment. Work remotely on a flexible contract paying $10-$35 per hour.
Posted Sep 3, 2026
Edit and align Simplified Chinese audio transcripts to help AI understand spoken language. This fully remote contract role offers flexible scheduling, 20+ hours per week, and $10-$35 per hour.
Posted Sep 3, 2026
Transcribe real-world French conversations for AI training from anywhere in the world. Use your language skills to capture speakers, slang, disfluencies, and difficult audio with precision at $10-$35 per hour.
Posted Sep 3, 2026
Transcribe challenging German recordings for AI training as a remote, flexible contractor based in Warsaw. Earn $10-$35 per hour while applying your language and listening skills to cutting-edge speech technology.
Posted Sep 3, 2026
Transcribe natural Italian speech for AI systems, including conversations with crosstalk, accents, background noise, and regional variations. Work remotely as an independent contractor for 20+ hours per week at $10 to $35 per hour.
Posted Sep 3, 2026
Use advanced mechanical engineering expertise to evaluate AI-generated technical responses, solve complex analysis problems, and improve model reasoning. This remote contractor project requires under 20 hours weekly and may begin within 48 hours of onboarding.
Posted Sep 3, 2026
Use your product design, UX, and frontend expertise to analyze decisions, document trade-offs, and help train next-generation AI systems. This worldwide contractor role offers $90-$140 per hour and requires 20+ hours weekly.
Posted Sep 3, 2026
Use your business analysis, research, and analytical writing expertise to help train next-generation AI systems. This flexible remote contract pays $90 to $140 per hour for about 20 hours weekly.
Posted Sep 3, 2026
Use your product marketing, enterprise sales, or strategy consulting expertise to create and evaluate business documents that improve AI systems. Remote contract work is available worldwide at $90-$140 per hour for 20+ hours weekly.
Posted Sep 3, 2026
Use senior corporate accounting judgment to evaluate financial documents, audit practices, models, tax materials, and legal documents for AI training. This worldwide, part-time contractor role pays $58-$110 per hour.
Posted Sep 3, 2026
Use your product management expertise to evaluate AI reasoning, review product documents, and assess prioritization decisions. This worldwide contractor role offers 20+ hours per week and pays $90-$140 per hour.
Posted Sep 3, 2026
Create, refine, and evaluate developer and product documentation that helps train next-generation AI systems. This worldwide, part-time contractor role offers $90 to $140 per hour and requires 20+ hours weekly.
Posted Sep 3, 2026
Review code, architecture proposals, and technical documents to help train AI systems, while earning an advertised $90-$140 per hour remotely. This flexible contractor role is open worldwide and does not require prior AI training experience.
Posted Sep 3, 2026
Use your UX research expertise to synthesize usability evidence, evaluate digital products, and create clear training inputs for AI systems. This worldwide contract role offers 20+ hours per week and pays $90-$140 per hour.
Posted Sep 2, 2026
Use your product design expertise to explain decisions, trade-offs, constraints, and user impact for next-generation AI training. This worldwide, part-time contractor role offers $90-$140 per hour and requires 20+ hours weekly.
Posted Sep 2, 2026
Use your frontend engineering expertise to evaluate code, architecture, and technical decisions that help improve AI systems. This remote contractor role offers $90-$140 per hour and requires 20+ hours each week.
Posted Sep 2, 2026
Review interface mockups and component libraries, write rigorous design rationales, and shape AI training data with Figma expertise. This flexible worldwide contract pays $90-$140/hour for about 20 hours weekly.
Posted Sep 2, 2026
Create detailed Brazilian Portuguese transcripts from natural speech, including accents, crosstalk, pauses, and background noise. This fully remote contract offers flexible work and $15-$35 per hour.
Posted Sep 2, 2026
Review and correct German audio transcripts for AI training from anywhere. Use your native-level German, sharp listening skills, and attention to timing in flexible part-time contractor work paying $10 to $35 per hour.
Posted Sep 2, 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.
