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 advanced mathematics expertise to author, review, and rigorously evaluate problems and proofs for AI training. This remote contractor role offers flexible scheduling and pays $80-$90 per hour.
Posted Aug 7, 2026
Use advanced CAM, CNC machining, and Fusion 360 expertise to evaluate AI-generated manufacturing workflows and recommendations. This remote contract offers 20+ hours per week at $80-$120 per hour.
Posted Aug 6, 2026
Use Autodesk Fusion 360 to develop and evaluate advanced 3-, 4-, and 5-axis CNC toolpaths that help train next-generation AI systems. This worldwide contractor role offers 20+ hours per week at $80-$120 per hour.
Posted Aug 6, 2026
Use your CNC machining expertise to help train next-generation AI systems from anywhere. This flexible contract offers 20+ hours per week and pays $80 to $120 per hour.
Posted Aug 6, 2026
Submit 30 unedited selfies and 10 short videos from the past five years to support AI facial recognition training. This remote, entry-level collection project requires no prior AI experience.
Posted Aug 6, 2026
Transcribe and review Korean and English audio for AI training from anywhere. This remote contractor role offers flexible part-time work, a listed commitment of 20+ hours weekly, and an advertised rate of $24-$35 per hour.
Posted Aug 5, 2026
Build realistic cloud infrastructure environments that test how AI systems deploy, troubleshoot, secure, scale, and recover production systems. This remote contractor role offers $50 to $100 per hour and requires 20+ hours weekly.
Posted Aug 5, 2026
Help shape next-generation AI by building reinforcement learning environments that evaluate coding agents on debugging, feature development, refactoring, and optimization. This worldwide, part-time contract offers flexible work for experienced software engineers.
Posted Aug 5, 2026
Use advanced stochastic modeling, renewal theory, and first-passage analysis to support AI training on bacterial population physics. This flexible worldwide contract pays $80 to $160 per hour for under 20 hours weekly.
Posted Aug 5, 2026
Use advanced expertise in gravitation and cosmology to solve and evaluate research-level AI benchmark problems. This remote contractor project offers $80-$160 per hour for about 10 hours weekly over 8 to 10 weeks.
Posted Aug 5, 2026
Record, edit, and deliver high-quality Japanese audio samples that help train next-generation AI systems. This flexible remote contractor role pays $10 to $30 per hour for about 20 hours weekly.
Posted Aug 5, 2026
Use your civil rights legal expertise to evaluate AI-generated responses, develop realistic legal scenarios, and explain complex doctrine. This remote contractor role offers 20+ hours per week and pays $140 to $400 per hour.
Posted Aug 5, 2026
Use your active AAPC certification and medical coding expertise to review clinical documentation, assign ICD-10 and CPT codes, and improve AI training datasets. This remote contract role offers flexible work of 20+ hours per week.
Posted Aug 5, 2026
Apply your U.S. healthcare law expertise to evaluate legal AI outputs, review regulatory materials, and strengthen model reasoning. This remote contractor role offers approximately 20 hours per week for 1-3 months at $140-$400 per hour.
Posted Aug 5, 2026
Use 10+ years of outpatient professional fee coding and academic medical center audit experience to improve AI training data. This worldwide, part-time contractor role offers 20+ hours weekly.
Posted Aug 5, 2026
Apply your criminal defense judgment to legal AI evaluation, document review, scenario analysis, and model improvement. This remote contractor role offers 20+ hours per week and $140-$400 per hour.
Posted Aug 5, 2026
Use your criminal-law expertise to review legal materials, evaluate AI-generated text, and improve next-generation AI systems. This remote contractor role pays $140-$400 per hour and requires 20+ hours weekly.
Posted Aug 5, 2026
Create clear, natural US English voice recordings that help train next-generation AI systems. Work remotely as a part-time contractor for $10-$30 per hour while applying your audio and performance skills.
Posted Aug 5, 2026
Record Hindi audio from scripts and help improve AI systems through transcription, review, and clear feedback. This flexible remote contractor role offers 20+ hours weekly for 1-3 months at $10-$30 per hour.
Posted Aug 5, 2026
Create reproducible reinforcement learning environments that test AI models on realistic software engineering workflows. Work globally for about 15 hours weekly at $100 to $150 per hour.
Posted Aug 4, 2026
Use your bankruptcy law expertise to draft legal examples, review documents, and evaluate AI-generated answers under current U.S. law. This remote contractor role pays $90-$150 per hour and requires an active U.S. license.
Posted Aug 4, 2026
Use advanced financial judgment to evaluate AI-generated analysis, valuation prompts, investment research, and model outputs. This remote, part-time contractor role pays $100-$200 per hour and requires 20+ hours weekly.
Posted Aug 4, 2026
Use your software engineering judgment to evaluate AI-generated technical content, refine prompts, fact-check claims, and create high-quality engineering artifacts. Work remotely as a flexible contractor for 20+ hours per week.
Posted Aug 4, 2026
Use data science, statistics, and technical writing expertise to evaluate and improve AI-generated content and data. This remote, part-time contractor role offers 20+ hours per week and $100 to $200 per hour.
Posted Aug 4, 2026
Review and correct machine-generated Spanish (Spain) audio transcriptions, add metadata, and annotate language data for next-generation AI systems. Work remotely for $10 to $20 per hour with a flexible schedule.
Posted Aug 4, 2026
Use deep clinical regulatory writing expertise to evaluate AI-generated documentation, trace claims to source data, and improve evaluation frameworks. This remote contractor role pays $50-$80 per hour and requires 20+ hours weekly.
Posted Aug 4, 2026
Use clinical-trial biostatistics expertise to evaluate AI-generated analyses, verify statistical outputs, and create reliable clinical research evaluation tasks. This remote contract offers $60-$65 per hour with a 20+ hour weekly commitment.
Posted Aug 4, 2026
Use at least five years of regulatory affairs experience to evaluate AI-generated responses, clinical records, and safety documentation. This remote, part-time contractor role offers 20+ hours per week and an advertised rate of $50-$70 per hour.
Posted Aug 4, 2026
Use advanced oncology and hematology expertise to evaluate AI-generated clinical interpretations, assess trial evidence, and explain benefit-risk reasoning. This worldwide, part-time contract offers 20+ hours per week at $160-$200 per hour.
Posted Aug 4, 2026
Use advanced pharmacovigilance expertise to author and review evaluation tasks for AI tools working with DSURs, PSURs/PBRERs, aggregate safety data, and case-level records. This remote contract pays $70-$80 per hour for 20+ hours weekly.
Posted Aug 4, 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.
