Looking for remote AI training or data labeling work open to applicants located in Belgium? This work can involve preparing and reviewing examples used by artificial-intelligence systems, with the exact duties defined by each live posting. OpenTrain is the hiring organization for roles presented on OpenTrain. Candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support.
Help evaluate how medical AI systems reason through realistic clinical problems. This remote, flexible contract is designed for actively practicing licensed physicians and offers up to 30 hours per week.
Posted Aug 3, 2026
Apply advanced M&A and corporate law judgment to evaluate, generate, and improve AI-generated legal content. This remote, part-time contract role offers $140-$400 per hour for US-qualified attorneys with top-tier transaction experience.
Posted Aug 3, 2026
Review physics solutions and AI-generated scientific reasoning for correctness, rigor, and clear methodology. This flexible, worldwide contract role offers less than 20 hours per week at $80–$150 per hour.
Posted Aug 3, 2026
Apply advanced computational biology and cheminformatics expertise to train and evaluate AI systems for computational drug discovery. Build reproducible coding benchmarks, assess scientific outputs, and work 20+ hours per week at $80-$110 per hour.
Posted Aug 3, 2026
Evaluate advanced AI-generated physics reasoning using expert scientific judgment, rigorous written analysis, and tools such as Python, SymPy, LaTeX, and Jupyter. This worldwide, part-time contract pays $80–$160 per hour.
Posted Aug 3, 2026
Apply US legal expertise to train advanced AI systems through structured review of litigation, M&A, private equity, capital markets, contracts, privacy, and compliance matters. Remote contractor work pays $140–$400 per hour, with 20+ hours per week.
Posted Aug 3, 2026
Review and annotate robotics video to help train next-generation AI systems. This remote, entry-level contract offers flexible part-time work at $7 per hour, with 20+ hours available weekly.
Posted Aug 3, 2026
Use advanced physics expertise to help train next-generation AI systems through rigorous problem solving, derivations, and technical analysis. This remote contract project offers flexible work at approximately 10 hours per week for 8–10 weeks.
Posted Aug 3, 2026
Create high-fidelity Brazilian Portuguese recordings that help train next-generation AI systems. This remote contractor role pays $20–$40 per hour and offers flexible work of 20+ hours per week.
Posted Aug 3, 2026
Apply advanced quantum optics expertise to benchmark AI systems and evaluate research-grade technical analyses. This remote contractor project offers global flexibility, approximately 10 hours per week, and $80–$160 per hour.
Posted Aug 2, 2026
Apply advanced AdS/CFT and mathematical physics expertise to review AI-generated solutions to research-level problems. This remote contractor engagement offers 10 hours per week for 8–10 weeks at $80–$160 per hour.
Posted Aug 2, 2026
Apply advanced condensed matter magnetism expertise to AI training involving magnetic structures, neutron scattering, magnetic space groups, and magneto-optic signatures. Remote contractor work runs about 8–10 weeks at approximately 10 hours per week.
Posted Aug 2, 2026
Apply advanced condensed matter and quantum information expertise to evaluate AI systems through exact diagonalization, symmetry methods, and quantum many-body benchmark analysis. Remote, part-time contract at $80–$160 per hour.
Posted Aug 2, 2026
Apply advanced statistical physics and quantum information expertise to evaluate AI-generated solutions, interpret simulations, and adjudicate technical research problems. Remote contract work requires about 10 hours weekly for 8–10 weeks at $80–$160 per hour.
Posted Aug 2, 2026
Apply your expertise in atomic, molecular, and optical physics to evaluate AI-generated reasoning, atomic-structure calculations, and spectroscopy analysis. Remote contractor work is worldwide, part-time, and pays $80–$160 per hour.
Posted Aug 2, 2026
Use your Kiembu and English language expertise to transcribe, annotate, and evaluate audio for AI training. This flexible remote contractor role offers approximately 20 hours per week for 1–3 months at $45–$95 per hour.
Posted Aug 2, 2026
Apply advanced chemistry expertise to help train and evaluate next-generation AI systems. This fully remote contract offers flexible part-time work worldwide at $70–$90 USD per hour, with 20+ hours per week.
Posted Aug 2, 2026
Help train next-generation AI by playing selected PC games, capturing synchronized gameplay data, and identifying bugs and anomalies. This remote contractor role pays $18 per hour and requires 20+ hours per week.
Posted Aug 2, 2026
Create research questions, answers, and benchmarking materials that help improve advanced language models. This remote contract offers flexible part-time work at $50–$60 per hour for strong researchers and communicators with an Apple Silicon Mac.
Posted Aug 2, 2026
Join OpenTrain AI to provide high-quality human feedback that improves generative models — evaluate and rank model outputs, run prompt and reasoning assessments, and contribute to RLHF and QA workflows. Expert-level role, 20+ hrs/week, 6+ months, contractor work in English (USD $1/hr).
Posted Aug 1, 2026
OpenTrain AI is hiring a senior software engineer to design production-like coding benchmarks and safety tests for frontier coding agents. Contractor role: remote, 20+ hrs/week (min 4 hrs/day), 4–8 week assignment; Python required and 8+ years' experience.
Posted Aug 1, 2026
Join OpenTrain to evaluate Spanish-language AI responses for real small-business scenarios: craft prompts, run short chatbot conversations, and rate outputs for clarity, usefulness, and accuracy. Part-time contractor role (20+ hrs/week), fully remote and worldwide.
Posted Aug 1, 2026
Join OpenTrain AI to complete project-based strategic finance exercises—15 hours/week at $85–$100/hr—producing graded deliverables like business cases, capital-allocation rankings, pricing recommendations, and market-sizing analyses.
Posted Aug 1, 2026
OpenTrain AI seeks an expert corporate treasury professional to create and grade document-based treasury exercises: 13-week cash forecasts, FX netting and hedge design, hedge designation and effectiveness testing, and treasury policy drafting. Contract, part-time, remote, $85–$100/hr.
Posted Aug 1, 2026
Join OpenTrain as a part-time, remote Investor Relations expert working on earnings materials, investor-day decks, ownership analysis and activist vulnerability assessments; paid $85–$100/hr for under 20 hours/week and open worldwide to English speakers.
Posted Aug 1, 2026
Probe conversational AI models and agents for jailbreaks, prompt injections, bias, and other safety failures. This expert, remote contract role offers flexible part-time work at $48–$62 per hour for fluent English and Swedish speakers.
Posted Jul 31, 2026
Record high‑quality Mandarin audio for AI training on a flexible part‑time contract (20+ hrs/week). Native Mandarin speakers with professional studio experience and clean recording setups can earn $20–$40/hr for a 1–3 month project.
Posted Jul 30, 2026
Record studio-quality German voice samples for AI training on a flexible, part-time contractor schedule; paid $20–$40 USD/hour and requiring native German fluency and professional recording experience.
Posted Jul 30, 2026
Record high-quality native Italian audio for AI training projects on a flexible, part-time contract paying $20–$40/hr. Join OpenTrain AI to contribute recordings, follow scripted prompts, and help shape how Italian-speaking systems understand natural speech.
Posted Jul 30, 2026
Join OpenTrain as an AI Model Reviewer to evaluate and generate high-quality examples, prompts, and rationales that improve model reasoning — remote, contractor work at $100–$180/hr for 20+ hours/week. Ideal for experts in law, education, engineering, science, or writing.
Posted Jul 30, 2026
AI training and data labeling work 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 applicable tasks depend on the individual role. For applicants located in Belgium, review each live posting to confirm the work and requirements for that role.
OpenTrain is the hiring organization for these public roles, and 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, including its requirements and conditions.
