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.
Join OpenTrain as a part-time Video Content Data Labeling Associate to annotate short first-person household-task videos (classification and object detection). Entry-level friendly, remote worldwide, $10–$12/hr for 20+ hours/week.
Posted Jul 16, 2026
Evaluate LLM outputs on complex finance tasks, craft domain-specific rubrics, and help improve AI training and benchmarking. Remote, flexible contract work (10–30 hrs/week) with competitive pay around $100+/hr.
Posted Jul 15, 2026
Join OpenTrain as a part-time AI Quality Analyst evaluating a conversational AI personalization feature; Portuguese fluency required. Remote, contractor work at $15/hr with a 20+ hour weekly commitment—you'll design personal prompts, compare side-by-side responses, and write defensible rationales.
Posted Jul 15, 2026
Evaluate and improve large language models on real finance tasks — capital markets, trading, M&A, accounting and more. Contract, part-time role (20+ hrs/week) paid $100/hr; English required and open worldwide through OpenTrain.
Posted Jul 15, 2026
Evaluate a new personalization feature for a conversational AI in German: design multi-turn prompts, compare side-by-side responses, and write clear rationales. Contractor role, $15/hr, 3-month engagement, remote with required PST overlap.
Posted Jul 15, 2026
Join OpenTrain to evaluate large language model outputs, create challenging prompts, and deliver recorded verbal feedback; remote, contract role (20+ hrs/week) paying $20–$30/hr. Entry-level friendly for strong American English speakers with LLM experience.
Posted Jul 15, 2026
Join OpenTrain as a remote Economics Expert to create benchmark-quality economics responses, review advanced solutions, and document rationales for AI training—PhD required; $80–90/hr, 20+ hours/week, contract part-time.
Posted Jul 15, 2026
Join OpenTrain as a contractor producing authoritative computer‑science answers, creating golden responses, and reviewing technical solutions to improve AI. PhD required; 20+ hours/week; $80–$90/hr; fully remote and open worldwide (English).
Posted Jul 15, 2026
Bring your PhD in biology to improve AI systems: review and refine biology prompts, scenarios, and model outputs on a part-time, remote contract at $80–90/hr. Work <20 hrs/week on text-based evaluation and generation tasks with OpenTrain AI.
Posted Jul 15, 2026
Join OpenTrain as a remote Physics AI Training Specialist (contract, <20 hrs/week) to create and review advanced physics content that improves AI reasoning; requires a PhD in Physics and pays $80–$90/hr. Work focuses on text-based generation and evaluation tasks.
Posted Jul 15, 2026
Join OpenTrain as a contracted Math Expert (PhD) creating and refining precise model answers for advanced undergraduate and graduate math prompts. Part-time remote work, 20+ hours/week at $80–$90/hr; English required.
Posted Jul 15, 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
Join OpenTrain as a remote Chemistry AI Training Reviewer to write and rate advanced chemistry responses, create golden-reference answers, and improve model behavior — part-time contract paying $80–$90/hr for an estimated 1–3 month engagement.
Posted Jul 15, 2026
Record, transcribe, and rate German voice interactions for a next‑generation AI assistant on your Mac; $38/hr, 20+ hours/week, fully remote and contractor-friendly. Ideal for native German speakers with strong transcription attention to detail.
Posted Jul 14, 2026
Design grading rubrics and score AI and human consulting deliverables with evidence-based written justifications. Remote contractor role, 20+ hours/week, pay $150–$220/hr working for OpenTrain AI on evaluation and quality tasks.
Posted Jul 14, 2026
Create graduate-level multiple-choice questions and exam-quality rationales, review AI-generated mechanical engineering content, and help ensure technical accuracy; contract, remote role paying $60–$130/hr for ~20+ hours/week.
Posted Jul 14, 2026
Remote, contractor role recording, annotating and evaluating German speech to improve AI pronunciation and language understanding; part-time (20+ hrs/week) and paid $30–$65/hr. Native German fluency and phonetics awareness required.
Posted Jul 14, 2026
Remote, part-time contract role writing and reviewing graduate-level electrical engineering exam questions and model outputs; flexible under 20 hrs/week, paid $40–$130/hr. Ideal for PhD or advanced master's holders with university teaching and assessment experience.
Posted Jul 14, 2026
Provide authoritative adjudication and written evaluations on contested high-energy and mathematical physics arguments to train next-generation AI. Part-time remote contractor role (under 20 hrs/week), $80–$160/hr, OpenTrain AI hiring.
Posted Jul 14, 2026
Join OpenTrain as a French Voice Coach delivering personalized pronunciation, diction, and fluency coaching in French; contractor, part-time role paying $30–$65/hr. Work remotely under 20 hours/week designing exercises, giving actionable feedback, and keeping progress records.
Posted Jul 14, 2026
Join OpenTrain as a part-time Hindi Voice Coach helping learners improve pronunciation, intonation, and conversational fluency through remote coaching and audio review. Flexible contractor role (under 20 hrs/week), paid $30–$65/hr, open worldwide to native or near-native Hindi speakers.
Posted Jul 14, 2026
Rate and annotate AI‑generated German-language music for up to 6 months, using music-production and audio-engineering terminology. Remote part‑time contract, 20+ hours/week, $32.48–$58.46/hr; native German and strong English required.
Posted Jul 13, 2026
Join OpenTrain AI to evaluate AI-generated Vietnamese music and lyrics — rate samples, annotate genres and song structure, and apply audio-engineering judgment. Remote contractor role, 20+ hrs/week, paid hourly up to $23.43 (USD).
Posted Jul 13, 2026
Join OpenTrain to evaluate AI-generated music in Swedish—assess songs, lyrics, vocal quality, and production for up to 6 months. Remote, part-time work at $30–$54/hr for experienced music producers, engineers, or mixers.
Posted Jul 13, 2026
Join OpenTrain to evaluate AI-generated Thai music—lyrics, vocals, and full productions—scoring musicality, vocal quality, and genre while annotating song structure. Remote, contractor role paying up to $23.43/hr for under 20 hours/week.
Posted Jul 13, 2026
Join OpenTrain as an AI Safety Red Team Specialist testing conversational models with adversarial prompts and jailbreaks; remote, 20+ hrs/week, $20–$22/hr. Requires expert red-teaming experience and native fluency in English and Punjabi.
Posted Jul 13, 2026
Join OpenTrain as an AI Safety Red Team Specialist to adversarially test conversational models, document reproducible jailbreaks and misuse cases, and help make AI safer. Part-time contract, 20+ hrs/week, $20–$22/hr; native fluency in English and Assamese required.
Posted Jul 13, 2026
Join OpenTrain as an AI Safety Red Teamer probing conversational models for jailbreaks, prompt injections, and misuse. Remote contractor role, 20+ hrs/week, $20–22/hr; native fluency in English and Odia required.
Posted Jul 13, 2026
Join OpenTrain AI to adversarially test conversational models, surface vulnerabilities, and produce reproducible attack cases; remote contractor work paying $20–$22/hr for experienced red teamers fluent in English and Bengali.
Posted Jul 13, 2026
Join OpenTrain as a GPU Kernel Optimization Expert working 20+ hrs/week to profile, optimize, and document GPU kernels for AI projects using C++17, Python and CUDA/HIP; contractor pay USD $80–$100/hr, remote and worldwide.
Posted Jul 13, 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.
