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Remote AI training and data labeling jobs in Japan

Looking for remote AI training or data labeling work you can apply for from Japan? OpenTrain is the hiring organization for these roles, and candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they will support. The individual posting determines whether applicants located in Japan are eligible and sets the role-specific requirements, responsibilities, hours, and pay.

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

Frontend Engineering AI Evaluation Specialist

Use your frontend engineering expertise to evaluate code, architecture, and technical decisions that help improve AI systems. This remote contractor role offers $90-$140 per hour and requires 20+ hours each week.

Coding & Software
Computer Code Programming
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $90–$140/hr

Posted Sep 2, 2026

UI Visual Designer for Design Systems

Review interface mockups and component libraries, write rigorous design rationales, and shape AI training data with Figma expertise. This flexible worldwide contract pays $90-$140/hour for about 20 hours weekly.

General Annotation
Image
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $90–$140/hr

Posted Sep 2, 2026

Brazilian Portuguese Audio Transcriptionist

Create detailed Brazilian Portuguese transcripts from natural speech, including accents, crosstalk, pauses, and background noise. This fully remote contract offers flexible work and $15-$35 per hour.

Audio & Speech
Audio
Remote · Worldwide
Portuguese
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

German Audio Transcript Editor

Review and correct German audio transcripts for AI training from anywhere. Use your native-level German, sharp listening skills, and attention to timing in flexible part-time contractor work paying $10 to $35 per hour.

Audio & Speech
Audio
Remote · Worldwide
German
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

Italian Audio Transcriptionist for AI Training

Transcribe natural spoken Italian for AI speech and language systems in a fully remote, flexible contract role. Work 20+ hours weekly on conversations, interviews, meetings, and challenging real-world audio at $15-$35 per hour.

Audio & Speech
Audio
Remote · Worldwide
Italian
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

Hindi Audio Transcriptionist for AI Training

Join OpenTrain as a remote Hindi Audio Transcriptionist and help improve AI systems through accurate Devanagari transcripts of natural, often noisy conversations. Flexible asynchronous contract work pays $10-$35 per hour.

Audio & Speech
Audio
Remote · Worldwide
Hindi
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

Brazilian Portuguese Audio Transcriptionist

Transcribe challenging Brazilian Portuguese audio for AI training, including multi-speaker recordings, background noise, and informal speech. Work remotely on a flexible schedule for 10 to 40 hours per week.

Audio & Speech
Audio
Remote · Worldwide
Portuguese
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

German Audio Transcriptionist for AI Training

Create precise German verbatim transcripts for AI training, handling crosstalk, background noise, overlapping speakers, and natural speech. Work independently for 20+ hours per week at $10-$35 per hour.

Audio & Speech
Audio
Remote · Worldwide
German
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

Italian Audio Transcriptionist for AI Training

Transcribe real-world Italian conversations, interviews, and meetings to help train AI speech systems. Work remotely as an independent contractor for 20+ hours per week, earning $10-$35 per hour.

Audio & Speech
Audio
Remote · Worldwide
Italian
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

French Audio Transcript Editor

Review and correct French audio transcripts for AI training with precise word-level timing and speaker accuracy. This remote contract role offers flexible task-based work for talent in Morocco and worldwide.

Audio & Speech
Audio
Remote · Worldwide
French
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

Castilian Spanish Audio Transcript Editor

Review and correct AI-generated Castilian Spanish transcripts with word-level precision, timestamps, and careful formatting. Work remotely on a flexible contract schedule for $10-$35 per hour.

Audio & Speech
Audio
Remote · Worldwide
Spanish
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

Spanish (Spain) Audio Transcriptionist

Turn authentic Peninsular Spanish conversations into accurate, structured transcriptions that help AI understand natural speech. Work remotely as an entry-level contractor for 20+ hours each week on a flexible schedule.

Audio & Speech
Audio
Remote · Worldwide
Spanish
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

Hindi Audio Transcriptionist for AI Training

Transcribe spoken Hindi for AI training datasets while working remotely on a flexible contractor schedule. Use your Devanagari typing and listening skills to handle real-world audio, including overlapping speakers and background noise.

Audio & Speech
Audio
Remote · Worldwide
Hindi
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

German Audio Transcript Editor

Review and correct German audio transcripts for AI training, including word-level accuracy, timestamps, and formatting. Work remotely on a flexible schedule for $10 to $35 per hour, with Swiss German expertise especially welcome.

Audio & Speech
Audio
Remote · Worldwide
German
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

Brazilian Portuguese Audio Transcriptionist

Transcribe challenging Brazilian Portuguese audio for AI training from anywhere. This flexible contract role offers 20+ hours per week, pays $10-$35 per hour, and requires no prior AI experience.

Audio & Speech
Audio
Remote · Worldwide
Portuguese
Part-time · Flexible
Entry level
Hourly · $10–$35/hr

Posted Sep 2, 2026

STEM Expert for AI Scientific Reasoning Evaluation

Earn $50–$100 per hour as a remote STEM Expert helping evaluate AI-generated scientific solutions. Use your expertise and Python skills on flexible, part-time technical reasoning tasks.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Intermediate level
Hourly · $50–$100/hr

Posted Sep 2, 2026

People Operations AI Training Expert

Use your People Operations expertise to evaluate and refine AI-generated HR tools, spreadsheets, and workflows. Work remotely for 20+ hours per week on a flexible contract project through OpenTrain.

Generative AI & RLHF
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level

Posted Sep 2, 2026

Senior Coding-Agent Benchmark Engineer

Create and evaluate realistic software-engineering benchmarks for coding agents using production-like repositories, secure coding, and rigorous testing. This fully remote contractor assignment runs 4 to 8 weeks.

Coding & Software
Computer Code Programming
Remote · Worldwide
English
Part-time · Flexible
Entry level

Posted Sep 2, 2026

Materials Science Expert for AI Evaluation

Use advanced materials science and engineering expertise to evaluate AI-generated answers, solve technical problems, and improve AI reasoning remotely. This expert contractor role offers flexible work under 20 hours per week.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Expert level
Hourly · $80–$130/hr

Posted Sep 2, 2026

STEM Scientific Reasoning Expert

Use deep STEM expertise and Python to solve challenging problems, validate AI-generated solutions, and explain technical corrections. This flexible worldwide contractor role offers approximately 15 hours per week at $50 to $100 per hour.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $50–$100/hr

Posted Sep 2, 2026

Music and Audio Annotation Expert

Use your music or audio expertise to annotate field recordings, identify instruments and musical details, and evaluate AI-generated descriptions. This remote contract pays $30-$45 per hour for 20-25 hours weekly.

Audio & Speech
Audio
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $30–$45/hr

Posted Sep 2, 2026

Adolescent Safeguarding Risk Specialist

Use professional safeguarding expertise to evaluate adolescent sexual safety, exploitation, and abuse risks for AI training. This remote contractor role offers $45-$95 per hour and requires 20+ hours weekly.

Medical & Health
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $45–$95/hr

Posted Sep 2, 2026

Adolescent Suicide and Self-Harm Specialist

Use advanced adolescent suicide and self-harm risk assessment expertise to help train safer AI systems. This remote contract role offers $45 to $95 per hour and requires 10 to 15 or more hours weekly.

Medical & Health
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $45–$95/hr

Posted Sep 2, 2026

Korean PDF Annotation and Transcription Expert

Help improve document AI by mapping Korean PDF layouts and transcribing Hangul, hanja, and handwriting with character-level accuracy. This remote contract pays $33.58 per hour and requires 20+ hours weekly.

Translation & Localization
Document
Remote · South Korea, Japan, India +18 more
Korean
Part-time · Flexible
Entry level
Hourly · $33.58/hr

Posted Sep 2, 2026

Adolescent Addiction Specialist for AI Training

Use your adolescent addiction expertise to evaluate clinical cases for AI training, assessing risk, severity, safety, and appropriate care. This remote contractor role offers part-time flexibility and pays $45 to $95 per hour.

Medical & Health
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $45–$95/hr

Posted Sep 1, 2026

Adolescent Eating Disorder Clinical Reviewer

Use specialist clinical judgment to evaluate adolescent eating disorder cases, medical risk, safeguarding, and treatment fit for AI training. This remote contractor role offers 20+ hours per week at $45-$95 per hour.

Medical & Health
Document
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $45–$95/hr

Posted Sep 1, 2026

Full Stack Developer AI Training

Use your frontend and backend expertise to build reproducible environments, golden solutions, and evaluations that help AI models solve real software problems. This remote contractor role pays $65 to $120 per hour.

Coding & Software
Computer Code Programming
Remote · Worldwide
English
Flexible hours
Intermediate level
Hourly · $65–$120/hr

Posted Sep 1, 2026

QA Engineer for AI Technical Evaluation

Use your QA engineering expertise to test, rate, and improve technical outputs used in AI evaluation projects. This remote expert contractor role offers $60-$112 per hour for an expected 3 to 6 months.

Coding & Software
Computer Code Programming
Remote · Worldwide
Flexible hours
Expert level
Hourly · $60–$112/hr

Posted Sep 1, 2026

Korean Voice Actor for AI Training

Record expressive Korean voice-overs from your home studio while helping train modern AI systems. This flexible, remote contract role offers 20+ hours per week.

Audio & Speech
Audio
Remote · Worldwide
Korean
Part-time · Flexible
Entry level

Posted Sep 1, 2026

Materials Science and Engineering AI Task Author

Turn authentic materials science and engineering work into rigorous AI evaluation tasks, grading criteria, and reasoning analyses. This remote freelance role pays $60-$90 per hour with a default 40-hour weekly commitment.

Generative AI & RLHF
Text
Remote · Worldwide
English
Part-time · Flexible
Entry level
Hourly · $60–$90/hr

Posted Sep 1, 2026

What this work can involve

AI training is the human work used to prepare and review examples for artificial-intelligence systems. Depending on the assignment, work may involve labeling images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. For roles open to applicants located in Japan, read each posting to understand the specific task and requirements.

  • Possible work areas include image and video annotation, language tasks, search evaluation, response review, and code review.
  • The live posting explains the responsibilities and eligibility for that particular assignment.

How hiring works through OpenTrain

OpenTrain is the hiring organization for the public roles available through OpenTrain. Candidates apply through OpenTrain, and successful candidates may be placed or referred to the client whose project they will support. Because eligibility and other terms can differ by assignment, use the individual posting as the source for role-specific information.

  • Apply through OpenTrain for the role you are considering.
  • Review the posting carefully for its applicant-location rules and other requirements.

Frequently asked questions

What can this work involve?
Remote AI training and data labeling work can involve preparing or reviewing examples for artificial-intelligence systems. Depending on the assignment, tasks may include annotating images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. The individual posting explains the actual responsibilities.
Where can I find role-specific details?
The individual live posting is the only source of truth for eligibility, responsibilities, qualifications, experience, pay, hours, schedule, location rules, and client-specific requirements. Check each posting to confirm whether applicants located in Japan can apply and to understand the details of that role.
How does hiring work through OpenTrain?
OpenTrain is the hiring organization for roles available through OpenTrain. Candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they will support, while the individual posting provides the role-specific information.