Business Document Expert — Japanese Speaker

About OpenTrain

OpenTrain is the #1 platform for finding and building careers in AI training and data labeling. We make it easy to discover projects, build a professional AI-training portfolio, and grow a durable freelance career working directly on the human-side of AI.

Why AI training matters

AI systems learn from examples prepared and reviewed by people. As a document evaluator you help shape how productivity and business tools behave by reviewing, rating, and improving model outputs.

This work is remote, flexible, and accessible: contributors often choose hours that fit their life while impacting real AI products used by businesses.

The role

We are recruiting a Business Document Expert fluent in Japanese to evaluate and enhance AI-generated business documents and productivity tool outputs. This is a contract, part-time role supporting AI evaluation and RLHF-style feedback for document-focused workflows.

• Schedule: 20+ hours/week (part-time, flexible)
• Pay: $30–$70 USD per hour (contractor)
• Languages: Native or bilingual Japanese and professional English
• Location: Remote; ideally based in the US

What you'll do

Work directly with AI-generated deliverables to ensure clarity, accuracy, and business readiness across finance, strategy, marketing, and operations.

• Evaluate and critique AI outputs in Word, Excel, and PowerPoint for structure, logic, and professional polish.
• Design and test realistic business scenarios that reflect current workflows (analysis, reports, presentations, proposals).
• Provide structured, actionable feedback and ratings (evaluation/RLHF) to improve AI performance.
• Annotate and document recurring issues and escalate systemic problems to cross-functional teams.
• Champion Fortune 500 or consulting-level quality standards for precision and relevance.

Requirements

You must meet all listed requirements to be considered for this specialist evaluation role.

• Bachelor's degree or higher in Business, Finance, Economics, Marketing, or a related field (required).
• 3+ years professional experience in business functions such as strategy, finance, marketing, operations, sales, or HR.
• Proven mastery of Excel, PowerPoint, and Word for polished business deliverables.
• Exceptional analytical, organizational, and written/verbal communication skills.
• Acute attention to detail and the ability to give clear, constructive feedback.
• Self-starter who thrives working independently in a fast-paced, remote environment.
• Native or bilingual proficiency in Japanese; professional English required.

Helpful background (not required)

The following experiences make you especially competitive but are optional.

• Experience at a Fortune 500 company, top-tier consulting firm, or major financial institution.
• Background in AI evaluation, prompt engineering, or document automation tools.
• MBA or advanced degree and prior experience mentoring or reviewing business deliverables.
• Familiarity with AI tools (ChatGPT, Claude, Copilot) or eagerness to learn quickly.

How the work is done

This project focuses on document evaluation (WORD/EXCEL/PPT) and uses evaluation-rating and RLHF-style labeling workflows. Labeling software is listed as OTHER; you will receive project-specific instructions, examples, and scoring rubrics.

As a contractor you will submit ratings, comments, and structured annotations that directly improve AI models used for business productivity tasks.

• Label types: EVALUATION_RATING, RLHF — provide ratings and written feedback.
• Data type: DOCUMENT — review spreadsheets, slides, and text documents.
• Employment: Contractor, part-time; OpenTrain helps you apply and track this opportunity.

How to apply

If you meet the requirements and want to shape business-facing AI, apply through OpenTrain with your résumé and examples of business deliverables you've produced or reviewed.

Include brief notes on your Office Suite experience, examples of relevant industry work, and confirmation of Japanese fluency.