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 AI as a remote, part-time contractor to evaluate and label LLM outputs in Arabic and English, focusing on safety and adversarial behavior. This role requires 20+ hours/week and pays $15–$40/hr while you assess, annotate, and document unsafe or sensitive model responses.
Posted Apr 3, 2026
Join OpenTrain AI as a remote, part-time contractor reviewing and producing high-quality Arabic–English AI training content; requires a BA/BS, native Arabic, C1 English, and 3+ years of bilingual review or localization experience. 20+ hrs/week; pay $6–$12/hr.
Posted Apr 3, 2026
Use your biology training to evaluate and improve AI-generated biological answers in a remote contractor role. Requires a BS (or higher) from a top-100 university, strong biological reasoning, and C1-level written English; competitive hourly pay ($25–$55/hr).
Posted Apr 3, 2026
Join OpenTrain AI to review and create high-quality clinical and public-health content for AI models — remote, part-time contractor role (under 20 hrs/week) paying $25–$72/hr (posted $60/hr). Ideal for clinicians, nurses, and public-health professionals with strong clinical reasoning.
Posted Apr 2, 2026
Join OpenTrain AI to evaluate and improve AI-driven infrastructure automation: generate prompts, rate DevOps runbooks, and assess self-hosted platforms. Part-time contractor role requiring 2+ years DevOps experience, annotation/Q A skills, English B2+, 20+ hrs/week, $15–$45/hr.
Posted Mar 29, 2026
Train and evaluate AI on complex automation workflows using Make.com or n8n and custom JavaScript. Part-time contractor role (20+ hrs/week) for experienced low-code developers who can design production workflows, integrate APIs/webhooks, and perform rubric-based LLM evaluation and RLHF.
Posted Mar 29, 2026
Join OpenTrain AI to train and evaluate AI systems on API integration scenarios, working remotely 20+ hours/week with pay from $15–$45/hr. You will design prompts, review LLM-generated integration plans and payloads, and test robustness across REST APIs, webhooks, and SaaS connectors.
Posted Mar 29, 2026
Build and refine LLM-powered automation pipelines: design prompts, integrate APIs, evaluate model outputs, and improve reliability for content and outreach flows. Part-time contractor role (20+ hrs/week) paying $15–$45/hr; intermediate-level experience required.
Posted Mar 29, 2026
Build and evaluate advanced n8n automations to train AI systems on reliable, scalable workflows; contractor role, 20+ hrs/week, paid $15–$45/hr (USD). Ideal for engineers with self‑hosted n8n, Docker, API integration, and rubric-based evaluation experience.
Posted Mar 29, 2026
Use your Zapier/Make.com expertise to design, test, and evaluate no-code automations while training and reviewing AI outputs. Part-time contractor role (20+ hrs/week), English B2+, 2+ years with Zapier/Make; pay $15–$45/hr.
Posted Mar 29, 2026
Design computational, research-style quantitative finance problem sets and validate solutions in Python for AI training. Part-time contractor role (20+ hrs/week), pay per hour $15–$60, requires a degree, 2+ years quant experience, and strong Python skills.
Posted Mar 29, 2026
Design research-style computational statistics problems and produce fully reproducible Python solutions for use in AI training. Remote contractor role (20+ hrs/week) paying up to $60/hr USD; Bachelor's degree and 2+ years professional statistics experience required.
Posted Mar 29, 2026
Design and verify original, research-grade computational biology problems using Python and standard bioinformatics libraries. Part-time contractor role (20+ hrs/week) for candidates with a Biology degree and 2+ years' computational biology experience; pay varies by project up to $60/hr.
Posted Mar 29, 2026
PhD-level computational chemist needed to design research-grade problem sets that require advanced physical and quantum chemistry reasoning and Python-based validation. Part-time contractor work (20+ hrs/week) with hourly pay up to $60 and compensation tied to task complexity.
Posted Mar 29, 2026
Design original, research-style computational physics problems and deliver fully reproducible Python solutions for part-time, project-based work. Requires 2+ years research/teaching experience, advanced scientific Python skills, and strong written English — 20+ hrs/week, $15–$60/hr.
Posted Mar 29, 2026
Design original, research-style computational math problems and provide reproducible Python solutions for OpenTrain AI; 20+ hrs/week, contractor, $15–$60/hr. Requires a math degree, 2+ years relevant experience, and strong Python/NumPy/SciPy/SymPy skills.
Posted Mar 29, 2026
Write original computational mechanical-engineering problem sets and deliver fully reproducible Python solutions using NumPy, Pandas, and SciPy; part-time contractor role (20+ hrs/week) with pay up to $50/hr. CV in English required; some locations are restricted.
Posted Mar 29, 2026
Author and verify original electrical engineering computational problems using Python and scientific libraries for OpenTrain AI; part-time contractor role (<20 hrs/week) requiring an EE degree and 2+ years' professional or teaching experience.
Posted Mar 29, 2026
Design original civil/computational engineering problems and verify reproducible solutions using Python to create high-quality training data for generative models. Part-time contract (20+ hrs/week), up to $50/hr; requires a Civil Engineering degree, 2+ years relevant experience, and strong written E
Posted Mar 29, 2026
Annotate fields on images of US driver's licenses (names, DOB, address, portrait, signature, and more) using Label Studio. Entry-level, remote, part-time contract work worldwide; pay listed at $5/hr (range $1–$7/hr), under 20 hrs/week.
Posted Mar 24, 2026
Design and build high-converting landing pages and brand storefronts using no-code platforms (Shopify, Webflow, Squarespace, WordPress). Part-time contractor role (<20 hrs/week) with hourly pay ($10–$25/hr, typical $20/hr); strong portfolio with live links required.
Posted Mar 11, 2026
Review AI-extracted records from PDFs, emails and scanned files: confirm, correct, fill missing fields, and flag ambiguities for escalation. Part-time contractor role, $12/hr, under 20 hours/week — ideal for people with invoices, orders, or logistics experience.
Posted Mar 3, 2026
Join OpenTrain to build a supervised fine-tuning dataset and run QLoRA on Qwen3-Coder for JUCE/C++ audio DSP. This contract role requires expert JUCE/DSP experience to extract code from 40+ repos, craft 3,000–5,000 ChatML examples, and fine-tune with Unsloth.
Posted Feb 27, 2026
Join OpenTrain AI to build end-to-end Python scraping pipelines and deliver clean structured datasets (CSV/JSON/Sheets). Remote, 20+ hrs/week at $20/hr; you must have hands-on experience with dynamic/JS-rendered sites and B2+ English.
Posted Feb 26, 2026
Record high-quality US English speech samples to train and evaluate AI speech systems for $30/hr. This contractor role is remote and requires professional recording equipment and native or near-native US English pronunciation.
Posted Feb 22, 2026
Review AI prompts and model responses, labeling for accuracy, relevance, clarity, and safety in a flexible remote contract role. Entry-level position paying $5/hr for under 20 hours per week with clear guidelines, examples, and random quality audits.
Posted Feb 22, 2026
OpenTrain AI seeks native-level French speakers to produce ARPABET phoneme- and word-level transcriptions for 1–2 minute audio clips. This remote, contract role requires 20+ hrs/week, passing a qualification quiz, and pays $18–$20 USD/hour.
Posted Feb 20, 2026
OpenTrain AI seeks experienced local teams to run on-the-ground facial image collection projects; part-time contractor work pays $25–30/hour for under 20 hours/week. Teams must demonstrate prior offline face-collection experience and basic English.
Posted Feb 6, 2026
OpenTrain AI seeks native Japanese speakers in Japan to transcribe short audio clips and verify audio quality; long-term, flexible schedule (~1 hour/day, Mon–Fri) at $15/hr. Must follow strict guidelines and complete a short screening sample.
Posted Feb 5, 2026
Join OpenTrain to transcribe short Italian audio clips for a long-term, flexible role (~1 hour/day, Mon–Fri). Work remotely from Italy using Labelbox, complete a short screening sample, and earn $11/hr while helping train speech AI.
Posted Feb 5, 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.
