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.
Evaluate AI-powered developer workflows through hands-on coding environments, GitHub, CI/CD, and technical assessment. This worldwide contractor role pays $50-$70 per hour for 20+ hours weekly.
Posted Aug 19, 2026
Use FreeCAD and real-world manufacturing expertise to create production-ready mechanical models, drawings, and assembly documentation for AI training. This remote contractor role offers approximately 15 to 20 hours per week at $40 to $100 per hour.
Posted Aug 19, 2026
Use your power electronics and PCB design expertise to evaluate technical AI-training materials, designs, and verification frameworks. Work remotely as a part-time contractor for 20+ hours per week.
Posted Aug 18, 2026
Use professional accounting and audit expertise to review financial documents and strengthen AI systems. This remote contractor role offers $40-$95 per hour and 20+ hours per week.
Posted Aug 18, 2026
Use advanced Excel, PowerPoint, and Word expertise to create realistic business scenarios, evaluate AI-generated work, and provide actionable feedback remotely for $35-$50 per hour.
Posted Aug 17, 2026
Use your legal expertise to evaluate US legal documents and help improve AI systems. This remote contractor role offers flexible work at $140-$400 per hour for 20+ hours weekly.
Posted Aug 17, 2026
Use professional music production and critical listening skills to evaluate AI-generated songs, lyrics, and vocals in Slovak and English. This flexible remote contract pays $20-$36 per hour.
Posted Aug 17, 2026
Use your 911 dispatch expertise to evaluate emergency-response AI, review incident communications, and develop realistic scenarios. This remote contract offers flexible work under 20 hours per week and pays $30 to $65 per hour.
Posted Aug 16, 2026
Turn public records and lengthy source materials into accurate articles and summaries that help train next-generation AI systems. This worldwide, part-time contract role pays $40-$75 per hour.
Posted Aug 16, 2026
Use your technical B2B sales expertise to qualify wholesale leads, communicate product value, and improve AI training workflows remotely. This contractor role pays $45 to $85 per hour and calls for 20 or more hours weekly.
Posted Aug 16, 2026
Use six or more years of technology project leadership experience to help improve AI models through real-world management scenario evaluation. This worldwide, part-time contract pays $70 to $130 per hour.
Posted Aug 16, 2026
Use your Tier 2 or Tier 3 IT expertise to help train AI systems through ticket analysis, troubleshooting documentation, and clear technical feedback. This remote contractor role pays $30-$55 per hour and supports flexible schedules of 20+ hours per week.
Posted Aug 16, 2026
Design learning pathways, digital materials, and assessments that help shape how next-generation AI systems learn. This remote contractor role offers flexible work of under 20 hours per week at $40-$75 per hour.
Posted Aug 16, 2026
Use your preclinical drug discovery expertise to evaluate scientific data and AI model outputs shaping the future of pharmaceutical development. This worldwide, part-time contract offers $60-$100 per hour.
Posted Aug 16, 2026
Record expressive French performances for AI training projects, bringing scripts, characters, and stories to life. Work flexibly from a professional home studio or studio setting with 20+ hours available weekly.
Posted Aug 15, 2026
Use expert finance judgment to create advanced valuation, modeling, investment, forecasting, and risk tasks for AI systems. Review solutions for accuracy and professional relevance in a flexible contractor role requiring 20+ hours per week.
Posted Aug 15, 2026
Review multi-channel recordings, verbatim transcripts, speaker diarization, timestamps, metadata, and safety issues in an eight-week remote AI training contract.
Posted Aug 15, 2026
Evaluate next-generation AI coding agents by reviewing their workflows, debugging Python outputs, and validating technical results. This remote contractual role requires expert Python engineering experience and practical experience building or using LLM-powered agents.
Posted Aug 15, 2026
Use political science expertise to create challenging prompts, test large language models, and review responses for accuracy, reasoning, nuance, and current relevance. This eight-week contractor assignment requires 40 hours per week.
Posted Aug 15, 2026
Evaluate AI-generated educational content through research, fact-checking, and concise written explanations. This remote 16-week contractor project pays $20 per hour and requires 20 hours weekly, with eligibility for up to 40.
Posted Aug 15, 2026
Use your Spanish corporate and M&A legal expertise to evaluate AI-generated answers against a standardized rubric. This remote contractor role pays $140-$150 per hour and begins with an approximately 10-hour assignment.
Posted Aug 15, 2026
Use senior HR expertise to design scenarios, reference answers, and evaluation rubrics for AI systems working across talent, employee relations, and organizational design. This worldwide remote contract pays $70-$80 per hour.
Posted Aug 15, 2026
Use five or more years of insurance expertise to design realistic AI evaluation tasks covering underwriting, claims, actuarial work, reinsurance, and compliance. Contract remotely with OpenTrain for $50-$60 per hour and 20+ hours weekly.
Posted Aug 15, 2026
Use advanced expertise in history and political science to create and evaluate rigorous AI benchmark questions, solutions, and references. This fully remote contract offers asynchronous work at $44 to $56 per hour.
Posted Aug 15, 2026
Use your enterprise IT leadership and systems architecture expertise to evaluate AI tools through structured discussions and written reviews. This remote contractor role offers $60-$75 per hour, about 20 hours weekly, and flexible scheduling.
Posted Aug 15, 2026
Apply your contract, compliance, and legal research expertise to AI training work reviewing legal documents and data. This remote contractor role pays $60-$75 per hour and requires 20+ hours weekly.
Posted Aug 15, 2026
Use your financial reporting, audit, tax, and compliance expertise to evaluate documents, build finance scenarios, and improve AI systems. This remote contractor role pays $60-$75 per hour for 20+ hours per week.
Posted Aug 15, 2026
Use your software development expertise to review code, shape technical AI training data, and improve model performance. This remote contractor role pays $60-$75 per hour and requires 20+ hours weekly.
Posted Aug 15, 2026
Use your film and television production expertise to design realistic AI evaluation tasks, production artifacts, and detailed rubrics. This remote contract role offers flexible work for experienced production professionals.
Posted Aug 14, 2026
Evaluate short videos of robots and people performing actions, compare instruction compliance, and improve AI-generated annotations. This remote contractor role offers flexible 20+ hour weeks and $15-$80 hourly pay.
Posted Aug 14, 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.
