Use your Machine Learning expertise to train and evaluate AI models.
Review AI data, model evaluation, and task-generation workflows as a remote QC Packaging Engineer. This three-month contractor assignment requires at least 20 hours per week and technical software engineering judgment.
Posted Nov 13, 2026
Complete coding-heavy AI training tasks involving machine learning models, Python, evaluation systems, and performance optimization. Work remotely for about 15 hours per week, with $60 to $120 per hour equivalent, paid per accepted task.
Posted Nov 12, 2026
Build multi-step AI agents for mathematical research, turning proofs and technical material into reliable software systems. This remote contractor role is open across Latin America and pays $25 per approved task.
Posted Nov 11, 2026
Review and rate LLM software engineering outputs using Golang codebases, GitHub issues, and unit tests. This contract role pays $25 per label, requires 20+ hours weekly, and is open across 23 listed countries and territories.
Posted Nov 10, 2026
Create and validate research-grade tasks that test AI models on real computational science problems. This flexible contractor role pays $100 per hour and requires hands-on research experience plus working Python skills.
Posted Nov 10, 2026
Create self-contained research coding tasks for GPU kernels and ML systems, then review AI model outputs against technical standards. Remote contract work pays $200 per approved task and typically takes about four hours.
Posted Nov 10, 2026
Use machine learning with atomistic, electronic, and structural materials data to support property prediction and materials discovery. This remote project-based role pays $175 per hour and expects 10 to 20 hours weekly for 2 to 3 weeks.
Posted Nov 10, 2026
Create and review research coding tasks that test AI models in robotics and reinforcement learning. This remote contract role pays $50 per hour and suits researchers with published work, released code, and strong hands-on experience.
Posted Nov 9, 2026
Create research-grade AI evaluation tasks from your own computational chemistry work, with Python reference solutions and tests. This flexible contractor role pays $100 per hour, with applications starting through OpenTrain.
Posted Nov 9, 2026
Create and assess challenging AI tasks in computational life science, reviewing code, analyses, models, and experiments. This remote contractor role requires at least 15 hours per week and pays $60 to $120 per hour equivalent, paid per task that meets project specifications.
Posted Nov 9, 2026
Design challenging machine learning tasks, build evaluation standards, and review AI-generated code, experiments, and analyses. Remote, flexible work pays $60 to $120 per hour equivalent, paid per task that meets the project specifications.
Posted Nov 9, 2026
Create, solve, review, and validate technical tasks used to evaluate AI systems. This flexible remote contractor role pays $60 to $120 per hour equivalent, paid per task that meets the project specifications.
Posted Nov 9, 2026
Build reproducible reinforcement learning environments and software engineering tasks covering DevOps, CI/CD, and debugging. This remote role offers $80 to $120 per hour equivalent, paid per task that meets project specifications, for about 15 hours per week.
Posted Nov 9, 2026
Evaluate advanced LLM inference and systems-engineering problems at $125 per hour on a flexible, part-time schedule. Create technical scenarios, reference solutions, and clear feedback for AI model evaluation.
Posted Nov 7, 2026
Design and validate machine learning benchmarks, reference solutions, and grading rubrics across your research specialty. Remote, asynchronous contract work offers flexible 5 to 40 hours per week at $150 per hour.
Posted Nov 7, 2026
Create realistic data science problems and detailed reference answers that test AI models on experiments, forecasting, segmentation, and predictive modeling. The role pays $115 per hour and requires at least three years of data science experience.
Posted Nov 7, 2026
Build and evaluate machine learning models, improve performance, and document technical decisions in a remote project lasting 2 to 3 weeks. Pay is $60 to $100 per hour for 10 to 20 hours weekly.
Posted Nov 7, 2026
Create and solve machine learning research problems, then write reference answers that reveal flawed methods and weak conclusions. This remote contractor role pays $115 per hour and requires at least 20 hours per week.
Posted Nov 6, 2026
Review AI-generated code, create coding datasets, and build Python tools that test software quality. This remote US contractor role offers flexible part-time work of 20 or more hours per week.
Posted Nov 6, 2026
Evaluate and improve AI-generated software across full-stack applications, APIs, and machine learning systems in a flexible US-based contractor role. Apply through OpenTrain to help build code datasets and software benchmarks.
Posted Nov 6, 2026
Evaluate and improve AI-generated code across Python backend systems, data pipelines, and machine learning infrastructure. This remote US contract offers flexible work of 20 or more hours per week.
Posted Nov 6, 2026
Evaluate AI-generated code and build verification tools for systems, backend, and infrastructure software. This flexible US-based contract requires strong Python and systems engineering experience.
Posted Nov 6, 2026
Review and improve AI-generated software, create Python verification tools, and assess LLM coding performance. This US-based contractor role offers flexible part-time work of 20 or more hours per week and is planned for one month.
Posted Nov 6, 2026
Review AI-generated full-stack code, apply clear evaluation guidelines, and explain your judgments. This US-based role suits software engineers with Python, JavaScript, React, Node.js, and production experience.
Posted Nov 6, 2026
Build challenging agentic benchmark tasks in Python, test AI reasoning, and analyze model behavior. This remote contract project is open worldwide and requires English fluency and 20+ hours per week.
Posted Nov 6, 2026
Work remotely from the United States evaluating AI-generated content and creating expert training data in computer science and machine learning. Earn up to $75 per hour with no minimum hours and typically 5 to 20 hours weekly on active projects.
Posted Nov 5, 2026
Test language models for harmful outputs, failed safeguards, and unexpected behavior as a remote Adversarial Prompt Expert in the United States. The flexible, part-time role pays up to $45 to $65 per hour.
Posted Nov 5, 2026
Create expert-level technical scenarios, reference solutions, and grading rubrics to evaluate AI reasoning. The role pays $135 per hour and calls for 20+ hours a week.
Posted Nov 5, 2026
Create technical problems and grading guides, then assess AI answers on machine learning inference and GPU kernels. Remote, flexible contractor work pays $100 to $170 per hour and requires 20+ hours per week.
Posted Nov 5, 2026
Use machine learning and bioinformatics expertise to build models and reproducible pipelines for genomic, transcriptomic, proteomic, and multi-omics data at $175 per hour.
Posted Nov 5, 2026
Machine Learning expertise may be applied to preparing or reviewing examples for artificial-intelligence systems. Depending on the individual assignment, that can include writing or rating model responses, evaluating search results, reviewing code, annotating images or video, transcribing or recording audio, or translating text. The individual posting defines which activities apply and what the project asks you to do, so read it before deciding whether to explore a role.
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. Hiring, eligibility, responsibilities, and other requirements are specific to each role, so use the individual live posting as the source for those details.
