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.
OpenTrain is hiring part-time contractor annotators to create dense, multi-tier captions and sub-second trajectory labels for first-person video. C1 English, strong timestamping skills, and availability for a February pilot required; pay is USD 8/hour.
Posted Feb 2, 2026
Native Japanese speakers in Japan needed to annotate and QA Japanese PDFs: draw bounding boxes, classify elements, correct OCR, and create simple HTML table descriptions. Pilot 2–3 hours; ongoing flexible contractor work. Pay: $18/hr (Annotator), $20/hr (QA).
Posted Jan 29, 2026
OpenTrain is hiring an entry-level content writer to produce and review energy-focused text with occasional annotation work in AWS SageMaker; this contract is roughly one paid hour per month for a fixed $100 fee. Remote worldwide — you must set up equipment/accounts and be punctual for any scheduled
Posted Jan 17, 2026
Seeking US-based, board-certified radiologists (MD) to perform CT and MRI DICOM annotation (polygon, segmentation, diagnostic labels) for a contract radiology project; hourly pay $150 and contracted through OpenTrain AI.
Posted Jan 15, 2026
Label bounding boxes around purple-outlined characters for a YOLO training dataset using Roboflow; pay is $0.02 per labeled image. Part-time contractor work (worldwide, <20 hrs/week) for intermediate image-annotation contributors.
Posted Jan 13, 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
Long-term, part-time contract for native Korean speakers based in South Korea to transcribe short audio clips; flexible ~1 hour/day schedule at $14/hour. Ideal for detail-oriented listeners with strong written Korean and steady internet.
Posted Jan 7, 2026
Long-term remote contract for native France-based French speakers to transcribe short conversational audio ~1 hour/day on a flexible schedule at $15/hr. Accurate, rule-driven transcripts and simple audio verification tasks required; a short screening sample is part of the process.
Posted Jan 7, 2026
Work remotely as a Hebrew–English bilingual evaluator, reviewing and improving AI-generated text for accuracy, clarity, and reasoning. Part-time contractor role at $32/hr (under 20 hrs/week) for experienced translators, editors, or linguistic QA specialists.
Posted Dec 26, 2025
Create 150 private-wealth Q&A pairs and evaluate model responses against certified-advisor standards, assigning 1–10 ratings. Remote, contract, part-time project (under 20 hrs/week) with a fixed fee of $500, open worldwide to finance professionals.
Posted Dec 19, 2025
Part-time contract role for Korean–English localization experts based in South Korea: evaluate and improve AI-generated Korean outputs using MQM/LQA, CAT workflows, and terminology management. Up to 20 hrs/week at $27/hr.
Posted Dec 19, 2025
OpenTrain AI is hiring an experienced Japanese–English localization and LQA specialist to evaluate AI-generated translations, correct outputs, and rate responses using structured criteria. Part-time contractor (remote, worldwide) under 20 hrs/week at $30/hr.
Posted Dec 19, 2025
Part-time contractor role for Spain-based localization professionals to evaluate and improve AI-generated Spanish (Spain) outputs; $24/hr, under 20 hrs/week. Requires native/nearly native Spanish, C1+ English, 5+ years localization experience, and strong MQM/LQA and CAT-tool skills.
Posted Dec 19, 2025
OpenTrain AI seeks a Germany-based contract localization expert to evaluate and improve AI-generated German outputs. Part-time (up to 20 hrs/week) work using MQM/LQA and CAT-tool workflows at $35/hr — ideal for seasoned localization professionals.
Posted Dec 19, 2025
OpenTrain seeks an experienced Chinese (Simplified)–English localization and LQA specialist to review and improve AI-generated translations. Part-time, remote contractor role (worldwide), under 20 hrs/week at $24/hr.
Posted Dec 19, 2025
Evaluate AI-generated Bash and PowerShell scripts: find bugs, security risks, and portability issues; rate responses and author model solutions. Mid‑senior US‑based contractors with 2–3+ years of scripting experience, Bachelor's required — part‑time up to 20 hrs/week at $40/hr.
Posted Dec 19, 2025
Annotate Polish text, audio, and images for AI training at $20/hr—verify transcriptions, tag entities, and apply sentiment and semantic labels. Flexible remote contractor roles for full-time (8 hrs/day) or part-time (min 20 hrs/week).
Posted Dec 18, 2025
Record five short Dutch conversations with another speaker (about 1.5 hours total) and earn a fixed $100 payment; four street-style and one in-car scenario. Fully remote and open worldwide — all recordings must be completed before Monday.
Posted Dec 17, 2025
Join OpenTrain AI as a part-time contractor annotating programming and related datasets; this remote role is open to Indian nationals based in India, requires a Bachelor's in Computer Science or related and expert annotation skills, and offers a fixed USD 10 payment with under 20 hours/week expected
Posted Dec 17, 2025
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
Join OpenTrain AI to train and evaluate advanced models by writing computational mechanical engineering problems and verified Python solutions. Part-time, remote work (under 20 hrs/week) for candidates with BSc+1yr or MSc/PhD and C1 English—paid up to $45/hr.
Posted Dec 12, 2025
Proofread Malay dictionary entries: confirm Malay words, correct spellings, and fix phonemic pronunciations using a specified phoneme set. Remote contract for native Malay speakers with ~3+ hours/day availability; paid $6 per 1,000 words (project budget $100).
Posted Dec 10, 2025
Label polygon masks and occupancy types on architectural floor-plan images using Roboflow to train a room-detection segmentation model. Part-time contractor work, remote worldwide — pay $10/hr, about 20+ hours/week.
Posted Dec 5, 2025
Create anonymized financial document + structured JSON ground-truth pairs to help benchmark and evaluate AI models; contractor, part-time, fixed-price $300, remote worldwide. Intermediate applicants with retail wealth-management familiarity are strongly encouraged to apply.
Posted Dec 5, 2025
Share your experience training AI by answering ten open-ended questions about pay, job security, workplace, and the highs and lows of this work. Open worldwide to people who have worked in AI training; part-time contractor project with a fixed price of $0 USD.
Posted Dec 5, 2025
Design and implement realistic, end-to-end data science problems used to train and evaluate advanced AI systems. Senior quantitative candidates with 5+ years of hands-on data science, expert Python and strong SQL skills, paid $50/hr as a part-time contractor.
Posted Dec 3, 2025
Annotate cooking and food videos by marking precise start/end times for actions, classifying action types and objects, and writing visually grounded descriptions for CLIP training. Contract, remote, worldwide work paid at $0.05 per labeled moment using Label Studio.
Posted Nov 19, 2025
Watch NBA games and earn $0.20 per recorded in-game event; OpenTrain provides a paid streaming subscription and a simple template so you can label plays using our internal tool. Part-time contractor work, under 20 hrs/week, open worldwide.
Posted Nov 18, 2025
Join OpenTrain AI to red-team large language models and agents, building reproducible attack tests, automation, and security tooling. Part-time remote work for certified cybersecurity professionals with strong scripting and pentesting experience, flexible hours, pay up to $55/hr.
Posted Nov 17, 2025
Join OpenTrain AI to label volleyball actions in images (spike, block, serve, set, receive) using CVAT. Entry-level, part-time contractor work paid per label ($0.03), remote and flexible — under 20 hours/week with examples and guidelines provided.
Posted Nov 16, 2025
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.
