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Remote AI training and data labeling jobs in Estonia

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.

  • 100% remote
  • Flexible hours
  • Hourly / per-task pay
  • 5 open roles

Russian Quality Assurance Lead (Remote, Part-Time)

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.

Generative AI & RLHF
Text
Remote · Armenia, Estonia, Georgia +8 more
Russian, English
Part-time · Flexible
Intermediate level
Hourly · $30/hr

Posted Jul 9, 2026

Estonian Language QA Lead (Remote, Part-Time, $40/hr)

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.

Generative AI & RLHF
Text
Remote · Estonia
Estonian, English
Part-time · Flexible
Intermediate level
Hourly · $40/hr

Posted Jul 8, 2026

Chemistry Expert Reviewer for AI Training

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.

Generative AI & RLHF
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $70–$90/hr

Posted Jul 7, 2026

Computational Biology AI Evaluation Expert

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.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Expert level
Hourly · $40–$60/hr

Posted Jul 7, 2026

Computational Chemistry Expert for AI Benchmarking

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.

Generative AI & RLHF
Document
Remote · Worldwide
English
Part-time · Flexible
Expert level
Hourly · $40–$60/hr

Posted Jul 7, 2026

Video Annotator, Vision-Language Action (VLA)

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.

Image & Video Annotation
Video
Remote · Worldwide
English
Part-time · Flexible
Intermediate level
Fixed price · $58000

Posted Jul 7, 2026

AI Quality & Testing Software Engineer

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.

Coding & Software
Video
Remote · Worldwide
English
Part-time · Flexible
Expert level
Hourly · $30–$42/hr

Posted Jul 6, 2026

Engineering Document Review Expert

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.

Generative AI & RLHF
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$40/hr

Posted Jul 3, 2026

Chemistry Document Review Specialist

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.

Writing & Editing
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$40/hr

Posted Jul 3, 2026

Physics Content Review Specialist

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.

Generative AI & RLHF
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$50/hr

Posted Jul 3, 2026

Mathematics Expert, Advanced Problem Solving & Evaluation

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.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$40/hr

Posted Jul 3, 2026

Legal Document AI Training Expert (Remote Contract)

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.

Legal & Finance
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$40/hr

Posted Jul 3, 2026

Computer Science AI Training Specialist

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

Generative AI & RLHF
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$40/hr

Posted Jul 3, 2026

Financial Document Review Specialist

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.

Legal & Finance
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$40/hr

Posted Jul 3, 2026

Physics Professor / Researcher, AI Content Reviewer

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.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $70–$90/hr

Posted Jul 3, 2026

Biology Document Review Specialist

Join OpenTrain to review and annotate biological datasets and documents, author and edit lab reports, and craft prompts that teach AI biological concepts. Part-time contractor role (20+ hrs/week), paid $20–$40/hr, fully remote and open worldwide.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$40/hr

Posted Jul 3, 2026

Tongan Audio Transcription & Linguistic Analysis Expert

Join OpenTrain AI to transcribe and analyze Tongan audio, help train language models, and shape AI with cultural expertise; remote, contract role paying $45–$95/hr with a typical 20+ hour weekly commitment. Native or near-native Tongan and English fluency required.

Audio & Speech
Audio
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $45–$95/hr

Posted Jul 3, 2026

Financial Crime & AML Compliance Expert (Remote Contract)

Join OpenTrain to design AML, fraud and scam scenarios and shape detection frameworks for AI systems in a remote contract role (20+ hrs/week) paying $50–$90/hr. Use hands-on financial-crime experience to write scenario libraries, escalation criteria, and practical guidance.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $50–$90/hr

Posted Jul 3, 2026

Red Team Lead, Offensive Cybersecurity for AI Evaluation

Lead red-team evaluation for AI security: design offensive-evaluation frameworks, safe proxy tasks, and scoring rubrics. Remote contractor role, 20+ hrs/week, $50–$90/hr; requires 5+ years in offensive security, red teaming, or vulnerability research.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $50–$90/hr

Posted Jul 3, 2026

Medical Document AI Training Specialist

Submit original medical documents you authored to help train AI — remote contractor role paying $20–$40/hr for 20+ hours/week. Worldwide, English-language submissions only; strong de-identification and medical judgment required.

Medical & Health
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$40/hr

Posted Jul 3, 2026

Physics Expert Adjudication Specialist

OpenTrain AI is hiring senior physicists to adjudicate contested physics arguments, compare solutions, and produce rigorous written evaluations used to train next-generation AI systems. This remote contractor role requires a PhD, senior research leadership, ongoing publications, 20+ hours/week, and

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $80–$160/hr

Posted Jul 3, 2026

Video Content Data Labeling Associate (POV Household Videos)

Annotate short first-person household task videos to train AI: classify clips, track objects across frames, and write clear quality judgments. Remote contractor role, $20/hr, 20+ hrs/week, start within ~24 hours with estimated project earnings of $3,200.

Image & Video Annotation
Video
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Jul 3, 2026

Senior Full Stack Engineer (Remote, Contract)

Join OpenTrain as a Senior Full Stack Engineer building web systems that power AI-training workflows. Remote contractor role, 20+ hrs/week, pay $30–$90/hr; 3+ years full‑stack experience required.

Coding & Software
Computer Code Programming
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $30–$90/hr

Posted Jul 3, 2026

Software Engineer, Human Data Platforms

Work remotely as a Software Engineer on Human Data Platforms building document workflows and pipelines for AI training; part-time contractor role at $50–$70/hr (20+ hrs/week) requiring Python, React, cloud, and document-processing experience.

Coding & Software
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $50–$70/hr

Posted Jul 3, 2026

Dioula-English Transcription & Linguistic Reviewer

Remote contract role transcribing and timestamping Dioula and English spoken video, and evaluating tone, intent, grammar, and nuance to improve AI language models; 20+ hrs/week, pay $15–$95/hr. Ideal for bilingual linguists or experienced transcribers comfortable with independent, detailed language

Audio & Speech
Video
Remote · Worldwide
DYU, English
Part-time · Flexible
Entry level
Hourly · $15–$95/hr

Posted Jul 3, 2026

Cocos2d-x Game Developer

Join OpenTrain AI as a contract Cocos2d-x developer building and refining 2D gameplay systems that support AI training and data-generation projects. Remote, part-time (20+ hrs/week), pay up to $120/hr; entry-level candidates with hands-on Cocos2d-x experience encouraged to apply.

Coding & Software
Computer Code Programming
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $50–$120/hr

Posted Jul 3, 2026

Medical / Healthcare AI Trainer (Remote, Part-Time)

Join OpenTrain AI as a part-time, remote Medical / Healthcare AI Trainer reviewing clinical documentation and care workflows; $15–25/hr, 20+ hours/week. No prior AI experience required—bring healthcare knowledge, attention to detail, and clear writing.

Medical & Health
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $15–$25/hr

Posted Jul 1, 2026

Voice Actor for AI Training

Join OpenTrain AI as a remote voice actor to record and review audio for Voice Performance Training—contractor, flexible schedule, $20–$50/hr with typical commitment 20+ hrs/week and estimated earnings of $3,200–$8,000.

Audio & Speech
Audio
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $20–$50/hr

Posted Jun 30, 2026

Video AI Training Specialist (Remote, Part-Time)

Join OpenTrain as a Video AI Training Specialist reviewing and annotating AI-generated and real-world video. Part-time contractor role (20+ hrs/week) paying $65–$80/hr, ideal for experienced video professionals who enjoy precise critique and dataset work.

Image & Video Annotation
Video
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $65–$80/hr

Posted Jun 30, 2026

Video Editor AI Training Specialist

Join OpenTrain as a Video Editor AI Training Specialist to review AI-generated animations and VFX, build evaluation rubrics, and curate video datasets; remote, 20+ hrs/week, paid $30–$80/hr (up to $80/hr).

Image & Video Annotation
Video
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $30–$80/hr

Posted Jun 30, 2026

What this work can involve

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.

  • Tasks follow detailed guidelines and often require careful attention to instructions and consistency.
  • Some postings list required languages or domain expertise; individual listings note whether Estonian language ability is necessary.
  • Work may involve assessing correctness, adding structured labels, or choosing best responses for model training.

How hiring works through OpenTrain

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.

  • Apply through OpenTrain; the individual posting is the source of role-specific requirements.
  • OpenTrain may place or refer successful candidates to a client for the project they support.
  • Check each posting for location rules, required qualifications, and any language or verification needs.

Frequently asked questions

What can this work involve?
AI-training and data-labeling work covers a variety of tasks that help teach and evaluate machine-learning systems. Examples include drawing bounding boxes on images, transcribing or labeling audio clips, classifying text, rating model-generated answers, translating content, and reviewing outputs for accuracy or policy compliance. The exact activities, the toolset you use, and the expected quality standards are described in each live posting, so consult the posting to understand what a specific role involves before applying.
Where can I find role-specific details?
Individual live postings are the authoritative source for eligibility, responsibilities, qualifications, experience, pay, hours, schedule, location rules, and any client-specific requirements. Candidates should inspect each OpenTrain posting closely to confirm whether they meet the listed requirements and to learn the full scope of work for that role. Do not assume details from one listing apply to another.
How does hiring work through OpenTrain?
Hiring for roles that accept applicants located in Estonia is managed through OpenTrain. Candidates apply through OpenTrain, which is the hiring organization for these public roles, and OpenTrain may place or refer successful candidates to the client whose project they support. Role-specific selection criteria, schedules, and compensation are published in each posting, so review those details on the individual listing.