Browse current remote roles in AI training, model evaluation, RLHF, data annotation, and expert review. Filter by country, language, and specialty, then apply through OpenTrain.
Design difficult, realistic data science problems for AI training and evaluation. This part-time contract pays $50 per hour and requires advanced Python, SQL, statistics, machine learning, and technical writing skills.
Posted Dec 3, 2025
Review AI-generated data science work, code, models, and QA processes in a remote US contractor role paying up to $110/hour. Work 20+ hours weekly and apply in English through OpenTrain.
Posted Jul 8, 2026
Evaluate AI-generated responses, create practical data science scenarios, and give structured feedback for up to $120 per hour. This remote, part-time project is open to US-based professionals with data science experience.
Posted Oct 10, 2026
Build and validate Python data pipelines and evaluation tasks for AI benchmarks. This part-time contract requires 20+ hours weekly, 4 hours of daily PST overlap, and 3+ years of data-focused experience.
Posted Jul 16, 2026
Design and verify realistic, computational data science problems using Python, SQL, statistics, machine learning, and GenAI. This project-based contractor role pays $15 to $40 per hour and is open worldwide.
Posted Apr 5, 2026
Evaluate challenging data science tasks, build reference solutions, and test coding agents remotely for about 15 hours per week. Compensation is $60 to $120 per hour equivalent, paid per task that meets the project specifications.
Posted Oct 13, 2026
Review AI-generated reasoning, code, and machine learning outputs, then write reference solutions and rate competing answers. This remote contractor role pays $60 to $100 per hour and requires 20 or more hours each week.
Posted Jul 8, 2026
Review and improve executive presentations, visualizations, and analytics reports for AI training work. This remote, part-time contractor role pays $150 to $350 per hour and is open to candidates in the United States, United Kingdom, and Canada.
Posted Sep 25, 2026
Evaluate AI model outputs in data science, statistics, machine learning, and quantitative reasoning for $245 to $280 per hour. This remote contractor role is open to professionals in English-speaking countries.
Posted Aug 27, 2026
Evaluate AI models, rank responses, build fine-tuning datasets, and write Python solutions in a fully remote data science contract. Choose 20, 30, or 40 hours per week with four hours of daily Pacific Time overlap.
Posted Jul 16, 2026
Evaluate AI-generated answers, create analytical prompts and reference solutions, and give structured feedback to improve AI models. This remote, part-time contractor role pays $150 to $200 per hour.
Posted Oct 13, 2026
Develop and deploy machine learning systems in Python across data pipelines, model optimization, monitoring, and production use cases. This part-time contract role requires 20+ hours per week and four years of hands-on experience.
Posted Aug 2, 2026
Create, solve, and review life sciences research problems for AI evaluation using Python, scientific data analysis, modeling, and code review. Pay is $60 to $120 per hour equivalent, paid per task that meets the project specifications, with about 15 flexible hours per week.
Posted Oct 21, 2026
Review business datasets, protect sensitive information, and evaluate AI-generated analysis for accuracy. This part-time remote US contract role pays $50 to $60 per hour.
Posted Oct 8, 2026
Design multi-step computational life sciences tasks that test whether AI agents can inspect data, run code, solve problems, and explain results. This remote contractor role pays $280 per approved task.
Posted Sep 22, 2026
Create realistic Python and Pandas tasks in Jupyter notebooks for AI training. This remote contractor role offers 20+ hours per week and up to $20 per hour for candidates in Bangladesh, India, and Pakistan.
Posted Aug 28, 2026
Analyze public datasets, interpret JSON data, and turn findings into clear technical documentation for AI research and data work. This remote contract requires 20 or more hours per week and strong English communication.
Posted Jul 17, 2026
Manage annotation and data-collection workflows, track KPIs, analyze datasets, and improve quality for AI training. This remote contract role offers 20+ hours per week across eligible countries.
Posted Oct 14, 2026
Create and verify challenging computational machine learning and STEM problems using Python, statistics, SQL, and modern GenAI tools. This global, project-based contract role is for experienced specialists who can work in clear written English.
Posted Apr 5, 2026
Review AI-generated R code, statistics, visualizations, and data workflows for accuracy and reproducibility. This US-only contract role pays up to $65 per hour and requires 20 or more hours each week.
Posted Jul 9, 2026
Earn $245 to $280 per hour as a remote contractor evaluating AI model responses, designing experiments, and creating prompts and reference solutions. Use Python, statistics, and machine learning to find errors and improve model quality.
Posted Oct 15, 2026
Create and record realistic Jupyter Notebook workflows that help train advanced AI models. This remote contractor role pays $20 per hour and requires 20 or more hours each week from contributors in Bangladesh, India, or Pakistan.
Posted Aug 27, 2026
Remote, part-time contract work for a Big Data Engineer building Python pipelines, distributed data systems, and reliable databases. Pay is $30 to $80 per hour, with applications open across 50 countries.
Posted Sep 15, 2026
Review business datasets and documents for accuracy, privacy, and redaction quality in a remote contractor role. Earn $31 to $60 per hour while helping improve AI training data.
Posted Oct 13, 2026
Analyze machine learning data, model outputs, evaluation metrics, and benchmark failures using Python and SQL. This remote contractor role requires 20 hours per week and is open in 10 countries.
Posted Jul 16, 2026
Review business datasets and documents for accuracy, completeness, privacy, and consistency. This remote contract role pays USD $31 to $60 per hour and is open to candidates in listed countries.
Posted Sep 9, 2026
Review AI-generated responses, check statistical methods, and write accurate R solutions for AI training. This remote contract role pays $55 per hour and requires 20+ hours weekly.
Posted Jul 9, 2026
Design research-style computational statistics problems, verify solutions in Python, and document reproducible answers. This contract role requires a degree and offers $15 to $60 per hour.
Posted Mar 29, 2026
Create complex computational life sciences tasks that test AI agents through scientific analysis, coding, and reproducible evaluation. This remote contractor assignment pays $300 per approved task.
Posted Oct 17, 2026
Manage annotation, data collection, analysis, reporting, and quality workflows for AI training projects. This entry-level contract role pays $40 to $60 per hour and requires at least 20 hours weekly.
Posted Oct 9, 2026
Lead large software engineering AI training programs, improve coding data quality and delivery, and guide distributed contributor teams. This worldwide contract role requires 20+ hours per week and fluency in English.
Posted Sep 30, 2026
Design complex, multi-step computational life sciences tasks that test how AI agents analyze data, run code, and reach valid conclusions. This remote five-week contractor assignment pays $300 per approved task and requires advanced research and Python skills.
Posted Sep 30, 2026
Create and record realistic MongoDB database workflows that help train AI models. This remote contractor role pays up to $20 per hour and is open to applicants in Bangladesh, India, and Pakistan.
Posted Sep 5, 2026
Review AI-generated SQL queries, database designs, and data-processing logic, then write reference solutions that help improve AI systems. This remote contractor role pays $50 per hour and requires 20+ hours weekly.
Posted Jul 9, 2026
Review AI model outputs and improve data pipeline quality using LLM agent engineering, observability, anomaly detection, and clear written feedback. This contractor role requires 20+ hours each week and fluent English.
Posted Oct 2, 2026
Review PDF and DOCX files, correct AI-generated extraction drafts, and produce accurate structured data for legal, finance, accounting, and compliance documents. This part-time contractor role pays $8 to $11.20 per hour and requires less than 20 hours per week.
Posted May 14, 2026
Review Tagalog and English content, answer analytical questions, research claims, and give detailed feedback that helps improve AI models. This remote contractor role requires 20+ hours per week and is open worldwide.
Posted Jul 17, 2026
Lead quality strategy for large-scale AI training data and chatbot evaluation programs. Build quality systems, guide QA teams, and improve delivery across a 16-week project.
Posted Oct 13, 2026
Create and evaluate multi-step computational mathematics tasks for AI agents, with expert solutions, tests, grading criteria, and documentation. This remote five-week contractor assignment pays $300 per approved task and requires at least 40 hours per week.
Posted Sep 26, 2026
Review and improve Python code used in AI training projects as a remote US contractor. Work 20 or more hours per week at up to $70 per hour while guiding reviewers and trainers.
Posted Jul 9, 2026
Help improve language models by researching claims, solving analytical questions, creating reasoning examples, and reviewing French and English responses. This remote, entry-level contract requires at least 20 hours per week.
Posted Sep 11, 2026
Build Docker-based validation workflows for datasets, schemas, and model artifacts using Dockerfiles, Python or Bash, and CI/CD checks. This contractor role requires 20+ hours weekly and is open to candidates in selected countries.
Posted Aug 3, 2026
Review AI-generated nutrition content and label food, dietary, and nutrient data for accuracy, safety, and relevance. This entry-level contract role is open worldwide and requires 20 or more hours per week.
Posted Oct 17, 2026
Work remotely as a Danish-English LLM Data Analyst on research, text review, analytical questions, and structured feedback that helps improve language models. This freelance assignment requires 20+ hours per week.
Posted Jul 17, 2026
Create terminal-based Earth science tasks for AI agents using scientific programming, geospatial data, modeling, and objective evaluation. This remote contractor assignment pays $300 per approved task and runs for five weeks.
Posted Sep 24, 2026
Create reproducible, terminal-based scientific computing tasks that test AI agents on physics, chemistry, materials science, and astronomy workflows. This five-week remote contractor assignment pays $300 per approved task.
Posted Sep 26, 2026
Design complex computational life sciences tasks that test how AI agents inspect data, write code, use scientific tools, and produce valid results. This remote five-week contractor assignment pays $280 per approved task.
Posted Oct 8, 2026
Review AI-generated code, systems, database, networking, and security content for accuracy and safety. This remote contractor role pays up to $20 per hour and requires 20+ hours weekly from India.
Posted Aug 29, 2026
Evaluate AI-generated quantitative finance responses and create expert training data for $150 per hour. This remote U.S. role requires advanced finance knowledge, strong research skills, and a relevant graduate degree.
Posted Sep 25, 2026
Build and deploy multi-step AI agent workflows for mathematical and scientific reasoning. This remote, four-week contractor role requires advanced Python, production agent systems experience, and 40 hours per week.
Posted Sep 28, 2026
Review AI-generated nutrition content, label dietary data, and check food information for accuracy and safety. This remote, eight-week contractor assignment needs nutrition or dietetics expertise and takes 20+ hours per week.
Posted Oct 14, 2026
Create advanced, non-coding biology problems and reference answers for AI evaluation. This contract role suits researchers who can interpret experiments, data, figures, sequences, structures, and scientific evidence.
Posted Sep 24, 2026
Use deep STEM expertise and Python to solve technical problems and evaluate AI-generated answers. This remote contractor role offers $60 to $120 per hour equivalent, paid per task that meets the project specifications, with about 15 flexible hours each week.
Posted Oct 16, 2026
Create realistic Earth sciences tasks for AI training and evaluation using scientific code, environmental datasets, simulations, and automated tests. This remote contractor role is open worldwide and requires fluent English and advanced technical experience.
Posted Oct 9, 2026
Investigate open problems in computer science and computational or mathematical physics using AI models, proofs, algorithms, and simulations. This flexible contract pays $100 to $400 per hour.
Posted Oct 13, 2026
Help improve language models by researching claims, solving reasoning tasks, summarizing content, and reviewing answers in English and Swedish. This remote contract requires at least 20 hours per week.
Posted Jul 17, 2026
Install tools on Ubuntu/Linux, follow written instructions, record structured tasks, and check your work. This part-time role pays $10 to $20 per hour and is open to candidates in selected countries.
Posted Jul 9, 2026
Create graduate-level life sciences problems that test how AI interprets experiments, biological data, figures, sequences, structures, and research evidence. This remote contractor role requires advanced life sciences research experience.
Posted Oct 2, 2026
Annotate food and dietary data, evaluate AI-generated nutrition content, and check scientific accuracy for nutrition tracking, coaching, and research applications. This flexible, eight-week remote assignment requires 20+ hours weekly and English proficiency.
Posted Oct 17, 2026
Evaluate chatbot responses against business requirements for accounting and finance applications. This remote, 16-week freelance project requires 20+ hours weekly across five working days, with two weekdays off.
Posted Oct 15, 2026
Create rigorous life sciences tasks for AI evaluation using experiments, biological data, figures, sequences, and research evidence. This remote contractor role runs for one month and requires 20 or more hours per week.
Posted Oct 8, 2026
Use advanced life sciences research skills to design scientific reasoning tasks, review AI-generated answers, and explain judgments clearly. The role requires strong scientific writing and at least 20 hours per week.
Posted Sep 30, 2026
Create realistic social scenarios, assess AI responses, and explain your ratings in clear written English. This remote project runs about 2 to 3 weeks, requires 20+ hours weekly, and pays per completed label.
Posted Oct 1, 2026
Create advanced, non-code life sciences reasoning tasks and expert reference answers for AI evaluation. This remote contract role requires strong biological research expertise and at least 20 hours per week.
Posted Oct 20, 2026
Solve, code, and validate advanced mathematical tasks for AI training using Python and scientific computing tools. Pay is $60 to $120 per hour equivalent, paid per task that meets the project specifications, with about 15 flexible hours each week.
Posted Oct 22, 2026
Review AI-generated finance analysis, create evaluation rubrics, and give clear feedback on model performance. This India-based contract requires English fluency, 20+ hours per week, and at least two years of relevant finance experience.
Posted Jul 28, 2026
Use advanced life sciences knowledge to write, review, and improve AI-generated scientific responses. This contract role offers 20+ hours per week and requires English fluency plus advanced research experience.
Posted Oct 10, 2026
Review AI-generated SQL, database explanations, and data-modeling content for correctness, performance, security, and clear reasoning. This remote U.S. contractor role pays up to $70/hour and requires 3+ years of SQL experience.
Posted Jul 9, 2026
Review transformed datasets and documents for missed or mishandled personal information, record discrepancies, and give clear feedback. Pay is $31 to $60 per hour, with applications starting through OpenTrain.
Posted Oct 12, 2026
Build and improve machine learning models remotely using Python, MongoDB, large datasets, and model evaluation methods. This contractor role pays $80 to $140 per hour and is open to candidates in many countries.
Posted Jul 3, 2026
Build and manage Python scraping workflows for complex, JavaScript-heavy websites. This remote contractor role pays $20 per hour and requires 20 or more hours each week.
Posted Feb 26, 2026
Help improve large language models by answering analytical questions, checking written claims, creating reasoning scenarios, and explaining your decisions in English and Norwegian. This remote contractor role requires 20 or more hours per week.
Posted Sep 11, 2026
Evaluate large language models with business-analysis expertise by writing demanding prompts, testing edge cases, and reviewing AI responses. This remote contract role requires a relevant master's degree, three years of experience, and 20+ hours per week.
Posted Oct 20, 2026
Create graduate-level, non-coding life sciences tasks that test how AI interprets experiments, data, figures, sequences, structures, and research evidence. This remote contractor role requires advanced research experience and at least 40 hours per week for one month.
Posted Sep 24, 2026
Annotate video footage by creating and reviewing bounding boxes, correcting errors, and following detailed project guidelines. This remote, part-time contract role requires three or more years of annotation experience, English fluency, and 20+ hours per week.
Posted Oct 10, 2026
Review and improve financial analysis datasets for AI training, applying expertise in earnings, valuation, modeling, and investment research. This remote contractor role pays $175 to $300 per hour.
Posted Oct 7, 2026
Create and verify advanced Python problem sets for quantitative finance, covering stochastic processes, optimization, simulation, time series, and risk modeling. This worldwide contract role pays $15 to $60 per hour for 20+ hours per week.
Posted Mar 29, 2026
Design original, research-style mathematics problems and verify complete solutions in Python. This part-time contract role requires an advanced mathematics background, a degree, and at least 20 hours per week.
Posted Mar 29, 2026
Design difficult genomics and bioinformatics tasks, reference solutions, and objective graders for AI agents in a five-week remote contractor assignment paying $260 per approved task.
Posted Oct 8, 2026
Design rigorous bioinformatics and computational genomics tasks that test whether AI models can analyze data, write code, and produce verifiable scientific results. This remote five-week contractor assignment pays $150 per approved task.
Posted Oct 7, 2026
Analyze French content, research claims, solve analytical questions, and create training scenarios and explanations as a French-speaking Business Analyst.
Posted Jul 17, 2026
Solve advanced physics problems and create clear, reproducible derivations for AI training. This remote contractor role pays $100 to $200 per hour and requires less than 20 hours per week.
Posted Sep 8, 2026
Build and test Python backend connectors or create realistic AI agent tasks and evaluation rubrics. This remote, four-week contract pays $300 per approved task and requires at least 20 hours per week.
Posted Oct 4, 2026
Create and evaluate Russian and English training data for large language models. Research claims, write reasoning tasks, and explain answers while working 20 or more hours each week with US Pacific time overlap.
Posted Jul 16, 2026
Review AI-generated market research and create expert research deliverables, including surveys, competitor scans, and insight summaries. Earn $30-$65 per hour with 20+ hours per week in a remote contractor role.
Posted Jul 9, 2026
Use Python to validate AI-generated computer science solutions, assess multi-step reasoning, and design rigorous problems. This project-based expert role pays $15-$40 per hour and is open worldwide.
Posted Apr 5, 2026
Evaluate AI model responses on finance topics, create scoring rubrics, and guide better training decisions. This remote US contract pays $100 per hour and offers flexible work for finance professionals.
Posted Oct 8, 2026
Analyze Turkish content, research claims, answer reasoning questions, and create clear feedback that helps improve language models. This remote contract role requires English and Turkish fluency and 20+ hours per week.
Posted Jul 17, 2026
Compare chatbot responses, assess business requirements, and document clear recommendations in a project-based Business Analyst role open to candidates in the United States. The role requires 20+ hours weekly and supports part-time contract work.
Posted Oct 20, 2026
Review text responses in human-AI social scenarios, explain your judgments, and help improve model behavior. This remote contractor project runs for 2 to 3 weeks and requires 20+ hours per week.
Posted Oct 15, 2026
Design difficult computational genomics tasks, datasets, reference solutions, and grading criteria for AI evaluation. This remote contractor assignment lasts 5 weeks, pays $260 per approved task, and requires 20+ hours per week.
Posted Sep 22, 2026
Use senior accounting and finance experience to answer complex questions, analyze financial data, and give clear advisory recommendations for AI applications. This remote freelance engagement runs up to 40 hours per week for an initial 10 weeks.
Posted Sep 18, 2026
Create realistic social scenarios, review English AI responses, and explain your ratings in clear written feedback. This remote project runs about 2 to 3 weeks, requires at least 20 hours per week, and pays per task.
Posted Oct 16, 2026
Review AI-generated sports and fantasy-sports outputs against real league rules, scoring systems, draft values, and playoff logic. This contractor project is expected to last up to two weeks and requires 40 hours per week, with part-time work potentially available.
Posted Sep 29, 2026
Coordinate contributors, workforce data, onboarding, and project capacity across AI training work. This remote, 16-week freelance role also includes comparing chatbot responses and making final assessments.
Posted Oct 13, 2026
Evaluate computer-using AI agents by researching claims, solving reasoning tasks, and rating model responses. This worldwide freelance role offers ongoing work for 20 or more hours per week.
Posted Oct 13, 2026
Create ITSM workflows, SLA models, incident datasets, and evaluation rules for AI systems. This contractor role runs for up to two weeks and requires weekend availability plus PST overlap.
Posted Oct 5, 2026
Analyze US economic data, monetary policy, Treasury markets, and Federal Reserve communications as a remote freelance macroeconomist. The role pays $50 to $70 per hour and is open to professionals based in the United States.
Posted Oct 22, 2026
Take self-portraits and requested photos with your smartphone, then complete short questionnaires for an AI data collection project. The work is remote, open in listed countries, and pays $140 per task.
Posted Sep 18, 2026
Review and improve AI-generated scientific answers across microbiome, metagenomics, clinical genomics, and translational research for $45 to $90 per hour. This remote contractor role requires a relevant PhD, laboratory research experience, and professional English.
Posted Oct 15, 2026
