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Data Manager, Japanese Language

Private AI

Private AI

Data Science
Tokyo, Japan
Posted on Nov 27, 2025

About Private AI

Private AI is a rapidly scaling Toronto-based startup transforming how organizations handle sensitive data. Backed by leading investors from New York, Seattle, and San Francisco, we've developed industry-leading AI solutions that enable safe data sharing and analysis without compromising user privacy.

Our technology empowers organizations to seamlessly detect, redact, and synthesize personal data within existing workflows, unlocking analytical value while maintaining the highest security standards. Led by renowned experts in privacy-preserving machine learning and natural language processing, we're on a mission to make data both useful and secure.

The Opportunity

We're seeking an exceptional Data Manager to scale our Japanese operations. As the founding member of our Japanese data team, you'll shape how our cutting-edge AI models understand and protect personally identifiable information (PII) in Japanese contexts.

This role combines linguistic expertise with technical innovation, offering the unique opportunity to directly impact product development while working at the intersection of AI, privacy, and language technology.

Key Responsibilities

Team Leadership & Development

  • Lead a high-performing team of Japanese language annotators
  • Implement training and quality assurance frameworks for consistent, high-quality data annotation
  • Establish best practices for Japanese language data processing and annotation standards

Technical Excellence

  • Help design and implement annotation guidelines for complex NLP tasks including Named Entity Recognition (NER), relation extraction, and coreference resolution
  • Identify edge cases and model limitations through systematic testing and analysis
  • Collaborate with Machine Learning engineers to optimize model performance for Japanese language processing
  • Contribute to the evolution of our PII entity ontology with Japanese-specific considerations

Customer Success & Product Development

  • Partner with the Japanese sales team to deliver exceptional customer experiences
  • Translate client requirements into actionable technical solutions and product improvements
  • Research and propose new features based on Japanese market needs and linguistic insights
  • Provide expert consultation on Japanese language privacy considerations

Data Strategy

  • Source and curate high-quality Japanese language datasets for model training
  • Develop strategies for handling Japanese-specific PII patterns and cultural considerations
  • Ensure data quality through rigorous validation and testing protocols

Required Qualifications

  • Education: Master's degree or PhD in Linguistics, Computational Linguistics, or related field
  • Language Skills: Native or near-native fluency in Japanese; professional proficiency in English (both written and oral)
  • Attention to Detail: Exceptional organizational skills with demonstrated ability to manage complex, multi-faceted projects
  • Collaboration: Proven ability to work independently while effectively collaborating across international teams

Preferred Qualifications

  • Proficiency in additional languages
  • Experience with annotation tools and data management platforms
  • Familiarity with command line utilities, Git version control, and Python
  • Knowledge of regular expressions and basic programming concepts
  • Teaching, training, or mentoring experience
  • Understanding of privacy regulations and data protection standards in Japan

What Makes This Role Exceptional

Immediate Impact

  • Scale our Japanese language operation
  • Directly influence product strategy for one of our key expansion markets
  • See your linguistic insights translated into real product improvements

Technical Growth

  • Gain hands-on experience with state-of-the-art NLP and privacy-preserving ML techniques
  • Work with cutting-edge annotation tools and methodologies
  • Contribute to research that advances the field of multilingual PII detection

Career Development

  • Path to leadership as the team scales
  • Ongoing professional development with exposure to advanced ML techniques
  • Opportunity to present findings at conferences and contribute to publications
  • Mentorship from world-class researchers and engineers

Culture & Benefits

  • Competitive compensation package with meaningful equity participation
  • Flexible remote work arrangements
  • True work-life balance with respect for personal boundaries
  • Collaborative environment where diverse perspectives drive innovation

Why Private AI?

At Private AI, you'll never just be employee number X. You'll be a founding member of a critical team, with your expertise directly shaping how millions of Japanese users' data is protected. Our technology transforms research timelines from months to minutes, and your work will be essential to making this transformation possible for Japanese-language data.

We foster an environment where intellectual curiosity thrives, mistakes are learning opportunities, and bold ideas are welcomed. If you're passionate about the intersection of language, technology, and privacy, this role offers an unparalleled opportunity to make a lasting impact.

Application Process

To apply, please send your resume and a brief cover letter explaining your interest in the role to heather@private-ai.com.

In your cover letter, we'd love to hear about:

  • Your experience with Japanese language data or annotation projects
  • Any technical skills or programming experience you bring

Learn more about our mission and technology at
private-ai.com.

Private AI is an equal opportunity employer committed to building a diverse and inclusive team. We welcome applications from candidates of all backgrounds and experiences.