Skip to content
OpenTrain AIFor AI Companies

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

English Text Annotation & Review (Argentina)

Argentina-based freelancers with B2+ English are needed to review and correct pre-annotated English text tags using an online labeling tool; part-time contractor work under 20 hrs/week at $3.50 USD/hour. Entry-level friendly—previous labeling experience and attention to detail are a plus.

General Annotation
Text
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $3.5/hr

Posted Feb 17, 2025

Audio Transcription (Native English, USA/Canada)

Transcribe and label short English audio clips for OpenTrain AI on a remote, part-time contract at $15/hr. Native US/Canada speakers with strong listening skills and attention to detail are needed for a 1+ year commitment (1 hour/day, Mon–Fri).

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $15/hr

Posted Feb 11, 2025

Creative Prompt & Response Writer, US/Canada

Write original prompt-and-response pairs from website screenshots to improve AI understanding of visual web content; must be a native English speaker based in the U.S. or Canada, available to start immediately and commit 20+ hours/week at $21/hr.

Generative AI & RLHF
Text
Remote · Worldwide
Part-time · Flexible
Intermediate level
Hourly · $21/hr

Posted Feb 4, 2025

Mandarin Electrical Engineering QA Review With Document Matching

Review 50–100 Mandarin electrical engineering QA pairs, verify each answer against provided documents using a document-finding tool, and add precise citations for RAG. Contract, part-time work at $40/hr, ~20–40 hours total and 20+ hrs/week.

Generative AI & RLHF
Text
Remote · Worldwide
Part-time · Flexible
Intermediate level
Hourly · $40/hr

Posted Feb 3, 2025

Compare Model and Expert Answers for Dutch Corporate Law

Compare 80 model responses to expert (gold) answers for Dutch corporate financial law documents, identify mismatches, and deliver clear top-level insights; remote, contractor role at $40/hr, ~20+ hours/week.

Legal & Finance
Text
Remote · Worldwide
Part-time · Flexible
Intermediate level
Hourly · $40/hr

Posted Jan 28, 2025

Frontend Web Developer (HTML/CSS/JS), India, C1/C2

OpenTrain is hiring frontend developers in India to create Q&A, sketch annotations, and code edits from website screenshots. Must have official C1/C2 English documentation, 2+ years HTML/CSS/JS, immediate availability, 20+ hrs/week at $13/hr.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $13/hr

Posted Jan 10, 2025

Dutch Speech Annotation, Remote Contract Work

Join OpenTrain AI to annotate short Dutch audio clips (classification & segmentation) in a remote, entry‑level contract project paid as a fixed price of USD 400.26; training on our proprietary tool is provided.

Audio & Speech
Audio
Remote · Worldwide
Flexible hours
Entry level
Fixed price · $400.26

Posted Jan 9, 2025

Flemish Native Speakers, Audio Annotation (Contract)

Join OpenTrain AI as a part-time contractor to transcribe and label audio; native Flemish required, training provided, 20+ hrs/week commitment, $300 fixed payment per project. Work remotely using internal tooling and basic Google Sheets.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Fixed price · $300

Posted Jan 8, 2025

Bashkir Audio Transcriber & Annotator, Remote, Part-Time

Join OpenTrain to transcribe and label Bashkir audio using our internal tools; training is provided and no prior experience is required. This contractor role asks for 20+ hrs/week (about 3–5 hours daily) and pays a fixed $300 for the assignment.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Fixed price · $300

Posted Jan 8, 2025

Kabyle Audio Transcription & Annotation (Remote, Part-Time)

Join OpenTrain AI as a remote contractor to transcribe and label Kabyle audio using our internal tools; entry-level candidates receive full training. This contract pays a fixed USD 270 and expects 20+ hours/week (roughly 3–5 hours/day).

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Fixed price · $270

Posted Jan 7, 2025

Haitian Creole Audio Annotator

Join OpenTrain to annotate Haitian Creole audio: transcribe, label speech segments, and apply quality-focused guidelines. Part-time contractor work (20+ hrs/week, ~3–5 hrs/day) with training provided and a fixed price of $270 for the project.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Fixed price · $270

Posted Jan 7, 2025

Sindhi Audio Transcriber & Speech Labeler

Native Sindhi speakers wanted to transcribe and label audio remotely — training provided and no prior experience required. Part-time contract work (20+ hrs/week; 3–5 hrs/day typical) with a fixed payment of $200 USD using OpenTrain's annotation tools.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Fixed price · $200

Posted Jan 7, 2025

Native Gujarati Audio Annotator, Remote Part-Time

OpenTrain AI is hiring native Gujarati speakers for a remote audio annotation project (classification and segmentation). Entry-level, training provided; contractors work 20+ hours/week on a part-time schedule for a fixed $100 project payment.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Fixed price · $100

Posted Jan 7, 2025

Native Tamil Audio Annotator (Remote, Part-Time)

OpenTrain AI seeks native Tamil speakers to annotate audio: segment speech, classify clips, and transcribe recordings. Entry-level, contractor role with a fixed-price payment of $100; expect to work 3–5 hours daily using OpenTrain AI’s annotation tools and provided guidelines.

Audio & Speech
Audio
Remote · Worldwide
Flexible hours
Entry level
Fixed price · $100

Posted Jan 6, 2025

Gujarati Data Annotation Specialist

Join OpenTrain AI to transcribe and segment Gujarati audio using internal tools — training provided and no prior experience required. This contractor role pays a fixed USD 115, requires native Gujarati and basic Google Sheets skills, and asks for 3–5 hours of daily availability.

Audio & Speech
Audio
Remote · Worldwide
Flexible hours
Entry level
Fixed price · $115

Posted Jan 4, 2025

Operating Systems Subject Matter Expert (India, C1 English)

Join OpenTrain to create and refine high-quality AI training data about operating systems — remote work for India-based experts with strong OS, scripting, and documentation skills. $25/hr, part-time contract, <20 hrs/week.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Jan 2, 2025

System Administrator SME for AI Training (India, C1 English)

Use your 7+ years of system administration experience to write, review, and explain real-world sysadmin tasks for AI training datasets. Contractor, part-time role paying $25/hr; India-based applicants with C1 English will be considered.

Generative AI & RLHF
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Jan 2, 2025

Senior Excel Specialist (India, C1 English)

Join OpenTrain as a Senior Excel SME in India to create and evaluate Excel-focused AI training data — $23/hr, contractor, 20+ hours/week. You'll design advanced Excel prompts, review and rank model outputs, and complete a coding test plus a live interview for selection.

Generative AI & RLHF
Text
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $23/hr

Posted Jan 2, 2025

Slurm Workload Manager SME (India, C1 English)

Join OpenTrain as a Slurm Workload Manager SME based in India to create scripting prompts, evaluate AI outputs, and refine models for HPC workloads. Part-time contractor role paying $27/hr (under 20 hrs/week); applicants must have 7+ years Slurm experience and C1 English.

Generative AI & RLHF
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $27/hr

Posted Dec 30, 2024

Senior Salesforce Developer SME (India, C1 English)

OpenTrain AI seeks a Senior Salesforce Developer SME in India (C1 English) to write coding prompts, evaluate AI responses, and refine model outputs—part-time contractor work at $24/hr (<20 hrs/week). Candidates must pass a live coding test and interview; dishonesty leads to permanent platform ban.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $24/hr

Posted Dec 30, 2024

Call Recording Sentiment Rater (Audio Classification)

Listen to 2–5 minute customer call recordings and label the caller's sentiment as overly-negative, negative, neutral, positive, or overly-positive. Entry-level, fully remote contractor work; fixed price USD 100, under 20 hours/week, open worldwide.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Fixed price · $100

Posted Dec 27, 2024

GDScript Subject Matter Expert (India, C1 English)

Join OpenTrain as a GDScript SME based in India to review, debug, and correct AI-generated Godot code; $20/hr, part-time contractor for ~20+ hours/week. Requires 7+ years professional GDScript experience, strong Godot knowledge, and a live coding test and interview.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Dec 26, 2024

Perl SME, Code Review & Debugging (India, C1 English)

Join OpenTrain AI as a Perl Subject Matter Expert based in India to review, debug, and correct AI-generated Perl code and clearly document fixes. Part-time contractor role (<20 hrs/week) at $20/hr requiring C1 English and 7+ years of professional Perl experience.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Dec 26, 2024

Julia Programming Language SME (India, C1 English)

OpenTrain AI seeks a Julia subject-matter expert based in India to review, debug, and correct AI-generated Julia code, document fixes, and explain improvements; contractor, part-time at $27/hr. Candidates must have 7+ years of professional Julia experience and C1 English.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $27/hr

Posted Dec 26, 2024

Lua SME, Review and Correct AI-Generated Code

OpenTrain AI is hiring an India-based Lua Subject Matter Expert (C1 English) to review, debug, and correct AI-generated Lua code, document fixes, and improve training data. Contract, part-time role at $24/hr with a ~20+ hrs/week commitment and a required coding test plus live interview.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $24/hr

Posted Dec 26, 2024

Rust SME for AI Code Review (India, C1 English)

OpenTrain AI seeks a Rust Subject Matter Expert based in India to review, debug, and correct AI-generated Rust code; $26/hr, contractor, part-time. Candidates must have 7+ years Rust experience, C1 English, and pass a live coding test and interview.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $26/hr

Posted Dec 26, 2024

Dart Programming SME - Code Annotation (India)

Experienced Dart developer (7+ years) based in India with C1 English sought for part-time contract work annotating and evaluating Dart code and technical content at $25/hr; candidates must pass a live coding test and interview.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Dec 26, 2024

SME Software Labeler, 40+ CS Specializations (US)

Join OpenTrain as a US-based Subject Matter Expert to label and evaluate technical programming content across 40+ computer science specializations; $40/hr, part-time contractor work requiring native English and 5+ years' experience. Apply for exactly one category and complete a live coding test.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $40/hr

Posted Dec 21, 2024

Software & Development Subject Matter Expert (India)

Join OpenTrain as a remote, part-time Subject Matter Expert in one of 43 software and computer-science specialties—India-based applicants with C1/C2 English and 5+ years' experience only. Earn $25/hour, work 20+ hours/week, and complete a coding test plus live interview.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Intermediate level
Hourly · $25/hr

Posted Dec 21, 2024

Music Fit Evaluation, Music Professionals (B1/B2 English)

Join OpenTrain AI to evaluate and rate music audio for training industry-grade production and mastering tools; part-time, remote work at $25/hr. Perfect for music producers, audio engineers, and sound designers with B1/B2 English and music-specific experience.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Dec 19, 2024

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.