Looking for remote AI training or data-labeling work while located in Estonia? OpenTrain is the hiring organization, candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support. AI-training work can include tasks such as labeling images or video, transcribing audio, evaluating model outputs, or translating text; inspect each posting to learn what the role requires.
Evaluate Marathi AI-generated responses and write clear English evaluation notes to improve model outputs. Remote contract role, 20+ hrs/week, $15–$20 USD/hour — ideal for Marathi natives with LLM experience and strong analytical writing.
Posted Jul 10, 2026
OpenTrain AI is hiring a Malayalam-speaking evaluator to review AI-generated Malayalam responses for accuracy, reasoning, clarity, tone, and completeness, then write clear English assessments. Contract, remote, 20+ hrs/week, $15–$20/hr.
Posted Jul 10, 2026
Evaluate AI-generated Spanish (MX) music by rating musicality, lyrics, vocals, and production while annotating genre, song structure, and vocal/instrumental traits. Remote, part-time contract paying $13.01–$54/hr for up to 6 months with a 20+ hour weekly commitment.
Posted Jul 10, 2026
Evaluate Arabic AI-generated music—lyrics, vocals, musicality and mixes—working remotely part-time. Immediate start; pay $12–$44.25/hr for experienced Arabic-speaking music producers and audio engineers.
Posted Jul 10, 2026
Join OpenTrain AI to evaluate and annotate Indonesian-language AI-generated music and lyrics — part-time remote work, 20+ hrs/week, up to 6 months, pay $11.42–$20.55/hr. Use your music production and audio-engineering expertise to rate musicality, vocals, lyrics, and mixes.
Posted Jul 10, 2026
Create technically rigorous single-choice questions and answer rationales for mechanical engineering AI training. Remote contractor role, 20+ hrs/week, $50–70/hr (typical $70/hr); MS or PhD in Mechanical Engineering required.
Posted Jul 10, 2026
Join OpenTrain AI to design and review technical multiple-choice questions and rubrics that train and evaluate electrical-engineering models. Remote, asynchronous contractor work at $60–$80/hr for 20+ hours/week, focused on technical accuracy and pedagogical quality.
Posted Jul 10, 2026
Join OpenTrain as a remote Software Engineer Code Reviewer working 20+ hrs/week to write, review, and rate Go, Python, and TypeScript code to train and evaluate AI systems. Competitive contractor pay ($100–$130/hr) and flexible scheduling.
Posted Jul 10, 2026
Collect synchronized smartphone IMU and first-person video for AI training in a part-time contractor role; entry-level, $10/hr, under 20 hrs/week, remote for applicants in eligible European countries. Hands-free recording and careful adherence to technical protocols required.
Posted Jul 10, 2026
Build pixel-perfect responsive web components from design screenshots and style guides using TypeScript and CSS3 in a remote contract role. 20+ hrs/week, $40–50/hr; strong English communication and ability to work independently required.
Posted Jul 9, 2026
OpenTrain seeks an expert Senior Webflow Developer to build and optimize responsive Webflow sites part-time (under 20 hrs/week). Earn $35–$50/hr converting Figma to production, managing CMS, creating animations, improving SEO/CRO, and automating workflows.
Posted Jul 9, 2026
Join OpenTrain to train next-generation coding assistants by running, evaluating, and documenting agent-driven software workflows. Part-time remote contract work (20+ hrs/week) paying $70–$126/hr for hands-on technical testing, code review, and process documentation.
Posted Jul 9, 2026
Create realistic business documents and evaluate AI-generated responses to improve how models handle professional scenarios; remote contractor role paying $35–$50/hr with a ~20+ hour/week commitment.
Posted Jul 9, 2026
Work remotely as a contractor reviewing packing lists, bills of lading, inventory registers, and supply-chain documents to train AI systems; 20+ hours/week, $40–$50/hr. Join OpenTrain AI to turn your logistics experience into flexible, high-impact annotation work.
Posted Jul 9, 2026
Work remotely as an Ubuntu/Linux AI Data Trainer, contributing structured text data to AI model training for under 20 hours/week. Pay is hourly ($10–$20/hr); you'll install tools on Ubuntu, follow written procedures, record actions, and ensure high-quality submissions.
Posted Jul 9, 2026
Lead Russian-language QA for OpenTrain AI's text-based model training: review AI outputs, give rubric-based feedback, maintain style guides, and support remote contributors. Contract role, 20+ hrs/week, $30/hr; applicants must be located in specified countries and fluent in Russian and English.
Posted Jul 9, 2026
Lead Estonian-language quality assurance for AI training projects: review model outputs and trainer work, give rubric-based feedback, and help scale QA processes. Remote contractor role (20+ hrs/week) paying up to $40/hour for Estonia-based contributors.
Posted Jul 8, 2026
OpenTrain seeks a remote Chemistry Expert Reviewer to design, review, and refine chemistry content and problems for AI training; PhD or ABD with teaching and research experience required. Part-time contractor role, 20+ hrs/week, $70–$90/hr.
Posted Jul 7, 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
Apply your computational chemistry expertise to review simulations, electronic-structure methods, and cheminformatics pipelines used to train and validate chemistry-focused AI systems. Remote contract role, 20+ hrs/week, $40–$60/hr.
Posted Jul 7, 2026
Join a long-term, remote video-annotation contract to help train vision-language action models by classifying activities and marking objects in everyday household videos using Encord. Fixed-price contract ($58,000 USD) with up to 180 hours/month per annotator and ongoing work for top performers.
Posted Jul 7, 2026
Join OpenTrain AI as a part-time, remote Software Engineer focused on QA and testing for AI-powered video generation products — 20+ hrs/week at $30–$42/hr. Bring TypeScript experience, a portfolio of self-built projects, and QA/test automation skills to help improve real AI products.
Posted Jul 6, 2026
Join OpenTrain as an Engineering Document Review Expert to evaluate technical reports, design documents, and project analyses for AI training — remote contractor role, 20+ hours/week, paid $20–$40 USD/hour. Ideal for engineers with technical-reporting experience.
Posted Jul 3, 2026
Join OpenTrain to review and validate technical chemistry documents for AI training—edit experimental write-ups, fact-check equations and datasets, and produce clear explanations. Remote contractor role, 20+ hrs/week, pay $20–$40 USD/hr, English required.
Posted Jul 3, 2026
Join OpenTrain AI as a remote Physics Content Review Specialist to evaluate and refine physics documents used to train AI models; this contractor role requires 20+ hours/week and pays $20–$50/hr. Bring your physics background to improve model reasoning and scientific accuracy.
Posted Jul 3, 2026
Join OpenTrain as a Mathematics Expert to write and evaluate advanced math solutions and proofs that train and benchmark AI systems. Flexible contract work (20+ hrs/week), remote worldwide, $20–$40/hr.
Posted Jul 3, 2026
Share original, professionally authored legal documents to help train responsible AI agents — remote contractor work, 20+ hours/week, paid $20–$40/hr. Ideal for practicing lawyers, legal researchers, or compliance consultants with strong drafting and legal-analysis experience.
Posted Jul 3, 2026
Join OpenTrain as a remote, part-time Computer Science AI Training Specialist to author and evaluate technical examples that teach AI systems; contractor work at $20–$40/hr for 20+ hours/week. Ideal for CS graduates with strong writing and domain expertise in algorithms, systems, databases, networki
Posted Jul 3, 2026
Apply your financial analysis expertise to review reports and write structured feedback that trains AI systems. Remote, part-time contractor work (20+ hrs/week) paying $20–$40/hr with estimated project earnings of $3,200–$6,400.
Posted Jul 3, 2026
Join OpenTrain to develop and review physics problems, solutions, and explanations used to train and evaluate AI; remote contractor role for PhD-level candidates at $70–$90/hr, 20+ hours/week. Work is asynchronous and text-focused.
Posted Jul 3, 2026
Roles that explicitly accept applicants located in Estonia involve human review and preparation of examples used to train or evaluate AI systems. Depending on the individual posting, tasks can include annotating images or video, transcribing or labeling audio, rating or writing model responses, evaluating search results, translating text, or applying subject-matter knowledge to verify outputs. Each listing specifies the exact responsibilities, required languages, and any domain knowledge needed, so candidates should read postings closely to see whether the tasks match their skills and interests.
All applications for roles that accept applicants located in Estonia are handled through OpenTrain. OpenTrain is the hiring organization for the public roles on this site and may place or refer successful candidates to the client whose project they will support. Eligibility, hours, pay, and other hiring details are set by each posted role, so review the posting for the rules that apply to that opportunity.
