Looking for remote AI training or data labeling work open to applicants located in Spain? OpenTrain is the hiring organization for roles on OpenTrain. Candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support. Eligibility and requirements can vary by individual posting.
Create professional Arabic recordings that help train next-generation AI systems. This worldwide, part-time contractor role offers flexible work at USD $10-$30 per hour.
Posted Aug 8, 2026
Use advanced CAM, CNC, and Autodesk Fusion 360 expertise to evaluate AI-generated manufacturing workflows. This remote, part-time contract pays $50 to $120 per hour and requires 20+ hours weekly.
Posted Aug 8, 2026
Use native German fluency, phonetic knowledge, and regional accent expertise to record, annotate, and evaluate speech data for advanced AI systems. This flexible remote contractor role pays $30 to $65 per hour.
Posted Aug 7, 2026
Edit and quality-check French voice recordings for text-to-speech and speech AI systems at $50 per hour. Use your critical listening and audio restoration skills in flexible, remote contract work.
Posted Aug 7, 2026
Use senior accounting and audit expertise to design evaluation tasks for AI systems across US GAAP, IFRS, financial reporting, technical accounting, and SOX compliance. Earn $70 to $80 per hour remotely with a 20+ hour weekly commitment.
Posted Aug 7, 2026
Use your regulatory law expertise to create scenarios, reference documents, and evaluation rubrics for advanced AI systems. This remote contract role pays $90-$100 per hour and supports 20+ hours weekly.
Posted Aug 7, 2026
Use Fortune 500 sales, marketing, or RevOps expertise to create realistic AI evaluation tasks, reference outputs, and rubrics for enterprise go-to-market decisions. Remote contract work pays $60-$70 per hour.
Posted Aug 7, 2026
Use your professional software engineering expertise and daily code-agent CLI experience to create verified execution traces for AI training. Submit validated JSON or JSONL trajectories across tasks of varying complexity for $3 per trace.
Posted Aug 7, 2026
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
Evaluate AI-generated answers about Spanish commercial and contract law using structured rubrics, with concise written feedback and pay of $140-$150 per hour. This remote contract project is designed for experienced in-house counsel in Spain.
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
AI training is human work that helps prepare and review examples used by artificial-intelligence systems. Depending on the role, tasks may include labeling images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. Roles open to applicants located in Spain can differ in their responsibilities, so inspect each live posting for the exact work involved.
OpenTrain is the hiring organization for roles on OpenTrain. Candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support. The individual live posting is the source of truth for eligibility, qualifications, responsibilities, hours, pay, and other role-specific requirements.
