Looking for Data Science work in AI training and data labeling? These roles can apply data science subject-matter knowledge to the human review and preparation that helps develop AI systems. 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.
Create benchmark questions and precise explanations from complex statistical charts, including heatmaps, Sankey diagrams, calibration curves, and residual plots. Earn $25–$50 per hour in flexible, remote AI training work.
Posted Aug 11, 2026
Design enterprise-grade data science scenarios, reference analyses, and evaluation rubrics that teach AI to reason like a senior data leader. This fully remote freelance contract pays $60–$70 per hour for a 40-hour weekly commitment.
Posted Aug 7, 2026
Use your data science expertise to evaluate, fact-check, and improve AI-generated content and analytical outputs. This remote, part-time contractor role offers $100–$200 per hour and requires 20+ hours weekly.
Posted Aug 4, 2026
Build and optimize production machine learning systems in Python across data pipelines, modeling, deployment, and monitoring. This remote contractor assignment offers 20, 30, or 40 hours per week for candidates in nine eligible countries.
Posted Aug 2, 2026
Design and author multi-step scientific evaluation tasks for frontier AI models in a full-time remote US contractor role paying $60–$90/hr. Expect ~35 hours/week building Python reference solutions, defining rigorous criteria, and reviewing model attempts.
Posted Jul 29, 2026
Join OpenTrain as a remote Bioinformatics Scientist to curate and validate drug-discovery datasets, review AI-generated scientific outputs, and deliver written feedback that improves model behavior. Part-time contractor work (20+ hrs/week) paying $90–$120/hr USD depending on experience.
Posted Jul 28, 2026
Join OpenTrain as a Human Data Manager to design and run annotation and data workflows, track KPIs, and improve dataset quality for AI training. Part-time contractor role, remote, paying $40–$60/hr with flexible hours (20+ hrs/week).
Posted Jul 21, 2026
Join OpenTrain as a remote Machine Learning Engineer focused on benchmark-driven evaluation of real-world ML systems. This contractor role requires 3+ years of ML engineering experience, strong Python skills, and availability 20+ hrs/week with PST overlap.
Posted Jul 16, 2026
Join OpenTrain as a contractor designing and validating data pipelines and benchmark evaluation tasks for AI systems. Work part-time (20+ hrs/wk) with Python on production-like datasets; applicants need 3+ years in data engineering, data science, or data-focused software engineering.
Posted Jul 16, 2026
Build and evaluate AI systems through Python development, supervised fine-tuning, RLHF, response ranking, and public-data analysis. This fully remote contractor role offers 20, 30, or 40 hours per week for a one-month engagement.
Posted Jul 16, 2026
Use your PhD-level statistics expertise to write, review, and explain model responses that teach AI systems; part-time remote contract paying $90–$120/hr for an estimated 1–3 month project with flexible hours.
Posted Jul 15, 2026
Expert role evaluating AI-generated revenue cycle analytics, dashboards, and financial models for healthcare RCM—contract, US-only, 20+ hrs/week at $100/hr. Provide structured ratings and analytic feedback to improve AI outputs and reporting quality.
Posted Jul 10, 2026
Join OpenTrain as an R Quality Assurance Lead to review R code, statistical analyses, visualizations, and reproducible workflows for correctness and clarity; contract, remote (US only), up to $65/hr, ~20+ hours/week. Help shape R-specific QA standards, documentation, and trainer support for high-qua
Posted Jul 9, 2026
Join OpenTrain as an R Model Evaluation Engineer to review AI-generated analyses, write expert R solutions, and improve model quality. Remote contract work at $55/hr, 20+ hours/week, for experienced R users who can judge statistical correctness and explain decisions clearly.
Posted Jul 9, 2026
Remote US-based contractor role reviewing AI-generated Python ML code and workflows — $120/hr, 20+ hours/week. Evaluate correctness, spot data leakage, give clear technical feedback, and help onboard and calibrate contributor teams.
Posted Jul 9, 2026
Review AI-generated market research outputs and produce gold-standard briefs, surveys, and insight syntheses in a remote, hourly contractor role. Part-time (20+ hrs/week), US$30–65/hr; requires 5+ years in market research and C1 English.
Posted Jul 9, 2026
Lead technical QA for AI-generated data science content—review code, models, metrics, and reasoning while providing clear written feedback. Remote contractor role (US only), 20+ hrs/week, top advertised pay up to $110/hr through OpenTrain.
Posted Jul 8, 2026
Join OpenTrain as a remote AI Data Scientist to review AI-generated analysis and code, write step-by-step reference solutions, and rate model outputs. Part-time contractor work (20+ hrs/week) with hourly pay up to $100 and hiring across many countries.
Posted Jul 8, 2026
Use your computational biology expertise to evaluate and annotate AI-generated outputs across genomics, structural biology, and systems biology. Remote contractor role, 20+ hrs/week, $40–$60/hr — help shape safer, more accurate scientific AI.
Posted Jul 7, 2026
Join OpenTrain AI as a part-time Excel Data Analyst working 20+ hours/week to clean, validate, and analyze document datasets used for text-generation and evaluation tasks. Earn $40–$55/hr (USD) while producing the reports and visualizations that improve AI training workflows.
Posted Jun 30, 2026
Part-time remote contractor role helping train AI systems by writing, reviewing, and rating business-operations content; $50–$60/hr, ~20 hrs/week for 1–3 months with estimated earnings of $8,000–$9,600. English fluency and real-world business analytics experience required.
Posted Jun 28, 2026
Join OpenTrain AI as a remote Business Intelligence Excel Consultant to review large Excel-based datasets, improve model outputs, and provide clear, stakeholder-ready feedback; $40–$50/hr, 20+ hours/week.
Posted Jun 28, 2026
OpenTrain AI seeks detail-oriented contractors to extract structured data from legal, finance, and compliance documents (PDF/DOCX). Part-time, remote work validating and editing AI draft outputs into a required JSON schema; pay USD 8.00–11.20/hr.
Posted May 14, 2026
Join OpenTrain to design reproducible, industry-grade data science problems and prompts for GenAI training; contract, part-time work (≈10–20 hrs/week) with pay up to $40/hr. Ideal for senior data scientists with expert Python, SQL and ML/MLOps experience.
Posted Apr 5, 2026
Create and verify original computational STEM/ML problems for GenAI training—contract, remote, ~10–20 hrs/week, paid hourly (up to $40/hr). Must have 5+ years ML experience, expert Python and SQL, strong statistics, and written English (C1+).
Posted Apr 5, 2026
Design computational, research-style quantitative finance problem sets and validate solutions in Python for AI training. Part-time contractor role (20+ hrs/week), pay per hour $15–$60, requires a degree, 2+ years quant experience, and strong Python skills.
Posted Mar 29, 2026
Design research-style computational statistics problems and produce fully reproducible Python solutions for use in AI training. Remote contractor role (20+ hrs/week) paying up to $60/hr USD; Bachelor's degree and 2+ years professional statistics experience required.
Posted Mar 29, 2026
Design and verify original, research-grade computational biology problems using Python and standard bioinformatics libraries. Part-time contractor role (20+ hrs/week) for candidates with a Biology degree and 2+ years' computational biology experience; pay varies by project up to $60/hr.
Posted Mar 29, 2026
Design structured evaluation scenarios and gold-standard behaviors for LLM-based agents in a remote, part-time contractor role (20+ hrs/week). Pay $18–$24/hr; requires QA-style thinking, basic Python/JavaScript, and strong written English.
Posted Jan 13, 2026
Generate a training dataset that maps natural-language vehicle use cases to lists of CAN signals using OpenTrain's proprietary tooling; fixed-price contractor role paying $2,000 USD. Subject-matter expertise in automotive CAN signals is required.
Posted Dec 15, 2025
Data Science work in AI training can involve using analytical and technical knowledge to prepare, label, review, or evaluate examples for artificial-intelligence systems. Depending on the individual posting, the work may include checking data labels, assessing model responses, reviewing code or analytical content, evaluating search results, or applying data science judgment to other assigned examples. Read each live posting carefully because responsibilities and requirements are specific to that role.
OpenTrain is the hiring organization for these opportunities, and candidates apply through OpenTrain. After a successful application, OpenTrain may place or refer the candidate to the client whose project they will support. The individual live posting is the source of truth for eligibility, responsibilities, qualifications, experience, pay, hours, schedule, location rules, and client-specific requirements.
