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.
Transcribe natural spoken Italian for AI speech and language systems in a fully remote, flexible contract role. Work 20+ hours weekly on conversations, interviews, meetings, and challenging real-world audio at $15-$35 per hour.
Posted Sep 2, 2026
Join OpenTrain as a remote Hindi Audio Transcriptionist and help improve AI systems through accurate Devanagari transcripts of natural, often noisy conversations. Flexible asynchronous contract work pays $10-$35 per hour.
Posted Sep 2, 2026
Transcribe challenging Brazilian Portuguese audio for AI training, including multi-speaker recordings, background noise, and informal speech. Work remotely on a flexible schedule for 10 to 40 hours per week.
Posted Sep 2, 2026
Create precise German verbatim transcripts for AI training, handling crosstalk, background noise, overlapping speakers, and natural speech. Work independently for 20+ hours per week at $10-$35 per hour.
Posted Sep 2, 2026
Transcribe real-world Italian conversations, interviews, and meetings to help train AI speech systems. Work remotely as an independent contractor for 20+ hours per week, earning $10-$35 per hour.
Posted Sep 2, 2026
Review and correct French audio transcripts for AI training with precise word-level timing and speaker accuracy. This remote contract role offers flexible task-based work for talent in Morocco and worldwide.
Posted Sep 2, 2026
Review and correct AI-generated Castilian Spanish transcripts with word-level precision, timestamps, and careful formatting. Work remotely on a flexible contract schedule for $10-$35 per hour.
Posted Sep 2, 2026
Turn authentic Peninsular Spanish conversations into accurate, structured transcriptions that help AI understand natural speech. Work remotely as an entry-level contractor for 20+ hours each week on a flexible schedule.
Posted Sep 2, 2026
Transcribe spoken Hindi for AI training datasets while working remotely on a flexible contractor schedule. Use your Devanagari typing and listening skills to handle real-world audio, including overlapping speakers and background noise.
Posted Sep 2, 2026
Review and correct German audio transcripts for AI training, including word-level accuracy, timestamps, and formatting. Work remotely on a flexible schedule for $10 to $35 per hour, with Swiss German expertise especially welcome.
Posted Sep 2, 2026
Transcribe challenging Brazilian Portuguese audio for AI training from anywhere. This flexible contract role offers 20+ hours per week, pays $10-$35 per hour, and requires no prior AI experience.
Posted Sep 2, 2026
Earn $50–$100 per hour as a remote STEM Expert helping evaluate AI-generated scientific solutions. Use your expertise and Python skills on flexible, part-time technical reasoning tasks.
Posted Sep 2, 2026
Use your People Operations expertise to evaluate and refine AI-generated HR tools, spreadsheets, and workflows. Work remotely for 20+ hours per week on a flexible contract project through OpenTrain.
Posted Sep 2, 2026
Create and evaluate realistic software-engineering benchmarks for coding agents using production-like repositories, secure coding, and rigorous testing. This fully remote contractor assignment runs 4 to 8 weeks.
Posted Sep 2, 2026
Use advanced materials science and engineering expertise to evaluate AI-generated answers, solve technical problems, and improve AI reasoning remotely. This expert contractor role offers flexible work under 20 hours per week.
Posted Sep 2, 2026
Use deep STEM expertise and Python to solve challenging problems, validate AI-generated solutions, and explain technical corrections. This flexible worldwide contractor role offers approximately 15 hours per week at $50 to $100 per hour.
Posted Sep 2, 2026
Use your music or audio expertise to annotate field recordings, identify instruments and musical details, and evaluate AI-generated descriptions. This remote contract pays $30-$45 per hour for 20-25 hours weekly.
Posted Sep 2, 2026
Use professional safeguarding expertise to evaluate adolescent sexual safety, exploitation, and abuse risks for AI training. This remote contractor role offers $45-$95 per hour and requires 20+ hours weekly.
Posted Sep 2, 2026
Use advanced adolescent suicide and self-harm risk assessment expertise to help train safer AI systems. This remote contract role offers $45 to $95 per hour and requires 10 to 15 or more hours weekly.
Posted Sep 2, 2026
Help improve document-understanding AI by annotating page layouts and transcribing Malayalam PDFs with character-level precision. This remote freelance role pays $12.68 per hour.
Posted Sep 2, 2026
Help improve document AI by mapping Korean PDF layouts and transcribing Hangul, hanja, and handwriting with character-level accuracy. This remote contract pays $33.58 per hour and requires 20+ hours weekly.
Posted Sep 2, 2026
Use your adolescent addiction expertise to evaluate clinical cases for AI training, assessing risk, severity, safety, and appropriate care. This remote contractor role offers part-time flexibility and pays $45 to $95 per hour.
Posted Sep 1, 2026
Use specialist clinical judgment to evaluate adolescent eating disorder cases, medical risk, safeguarding, and treatment fit for AI training. This remote contractor role offers 20+ hours per week at $45-$95 per hour.
Posted Sep 1, 2026
Use your frontend and backend expertise to build reproducible environments, golden solutions, and evaluations that help AI models solve real software problems. This remote contractor role pays $65 to $120 per hour.
Posted Sep 1, 2026
Use your QA engineering expertise to test, rate, and improve technical outputs used in AI evaluation projects. This remote expert contractor role offers $60-$112 per hour for an expected 3 to 6 months.
Posted Sep 1, 2026
Record expressive Korean voice-overs from your home studio while helping train modern AI systems. This flexible, remote contract role offers 20+ hours per week.
Posted Sep 1, 2026
Turn authentic materials science and engineering work into rigorous AI evaluation tasks, grading criteria, and reasoning analyses. This remote freelance role pays $60-$90 per hour with a default 40-hour weekly commitment.
Posted Sep 1, 2026
Use deep engineering expertise to build Python simulations, define quantitative acceptance criteria, and evaluate whether AI-generated designs work from first principles. Remote contract work pays $60 to $90 per hour.
Posted Sep 1, 2026
Use electrical engineering expertise to automate hardware tests, integrate laboratory instruments, and evaluate technical results for AI training workflows. This worldwide contract offers $70-$85 per hour and requires 20+ hours weekly.
Posted Sep 1, 2026
Use your expert CAD, CadQuery, and Python skills to convert STEP files into simple, editable, executable parametric models. This worldwide contractor project is expected to run for 1 to 3 months and pays $20 to $40 per hour.
Posted Sep 1, 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.
