Japanese PDF Annotator and QA Reviewer

About OpenTrain

OpenTrain AI is the hiring and contracting organization for this remote project. OpenTrain is the #1 platform for finding and building careers in AI training and data labeling, helping people discover meaningful projects, build experience, and apply in minutes.

• Create an OpenTrain account for free
• Work remotely from Japan
• Build experience in a growing AI training industry

About AI Training and Document Annotation

AI training is the human side of building artificial intelligence. People prepare and review examples that help AI systems understand documents, language, images, and other real-world information. In this project, your careful annotation and quality checks will help improve how AI processes Japanese PDFs.

• Remote work using a computer and reliable internet connection
• Structured tasks guided by detailed project instructions
• A chance to contribute to cutting-edge AI development

The Japanese PDF Annotator and QA Reviewer Role

OpenTrain AI is hiring native Japanese speakers located in Japan for a PDF annotation and transcription project. You will work with Japanese documents such as technical presentations, government forms, and contracts. Annotators will be paid $18 per hour, while QA Reviewers will be paid $20 per hour.

The initial pilot requires approximately 2–3 hours. Qualified contributors may continue into a flexible production phase with ongoing work available based on performance.

• Contractor position
• Intermediate experience level
• Native Japanese required
• Basic English proficiency at B1 level or higher
• Must be located in Japan

What You'll Do

You will label document structure accurately and consistently, correct machine-generated text, and help ensure that annotated PDFs reflect the organization and meaning of the original documents. QA Reviewers will additionally inspect completed work and provide feedback.

• Draw bounding boxes around text blocks, tables, figures, headers, and captions
• Classify document elements using predefined annotation categories
• Verify and correct OCR-generated Japanese text
• Create HTML-based descriptions for tables
• Apply the correct reading order between document elements
• Identify hierarchical relationships among annotated elements
• Review completed annotations for accuracy as a QA Reviewer
• Provide clear feedback on annotation quality

Requirements and Preferred Experience

This role requires professional-level Japanese reading and writing, careful attention to detail, and the ability to follow detailed guidelines independently. You should be comfortable meeting deadlines and maintaining consistent availability during the project.

• Native Japanese speaker with professional reading and writing ability
• Currently located in Japan and able to work from Japan
• Strong attention to detail
• Reliable internet connection
• Ability to work independently and meet deadlines
• Able to annotate multiple PDF layout elements with bounding boxes
• Comfortable accurately verifying and correcting Japanese OCR text
• Able to apply reading order and hierarchical relationships consistently
• Basic HTML knowledge for simple table descriptions
• Experience with document annotation, data labeling, transcription, or structured QA is preferred

Availability and How to Apply

You must be able to start within 3 business days of notification and complete the initial 2–3 hour pilot. After the pilot, flexible production hours and ongoing work may be available for qualified contributors. Apply through OpenTrain AI to be considered for this Japanese PDF annotation project.

• Initial pilot: 2–3 hours
• Production phase: Flexible hours
• Potential for ongoing work based on performance
• Annotator compensation: $18 per hour USD
• QA Reviewer compensation: $20 per hour USD
• Start within 3 business days of notification