仕事概要
LegalOn Technologies is a global leader in legal AI solutions, trusted by more than 7,500 companies and law firms worldwide. The company empowers legal teams to review and negotiate contracts faster, with greater accuracy and confidence. Operating across Japan, the United States, and Europe, LegalOn is the first AI company from Japan to surpass ¥10 billion in annual recurring revenue (ARR) and has raised over $200M from leading investors including SoftBank and Goldman Sachs. It also has one of the largest and most global AI teams of any startups in Japan. In 2025, LegalOn achieved its first M&A by welcoming Germany's Fides Technology into the group, further accelerating global expansion. LegalOn combines LLMs, intelligent Agents and intelligent AI-driven workflows. Beyond legal, the company now offers specialized AI solutions including "CorporateOn," "CXOn," and "DealOn" to support diverse business domains requiring high expertise. In partnership with OpenAI, the company is redefining the legal AI landscape and developing innovative solutions for the future of professional work.
For more details about our company, products, and development organization:
https://legalforce-recruit.notion.site/LegalOn-Technologies-3e114a8aecfb410a96424e34a0ed8bd6
【Key Responsibilities】
The Knowledge Platform team is building a company-wide platform that extracts and organizes valuable insights from a diverse range of data sources—including contracts, case files, legal documents, and internal materials—so that this knowledge can be leveraged across multiple products.
We are seeking a mission-driven Software Engineering Manager to lead the development of internal applications and platform features that extract, structure, and serve knowledge from a diverse range of documents and internal content. You will help accelerate LegalOn’s AI-native transformation by optimizing the information extraction process and enhancing our platform’s impact across multiple products.
■ What Mission and Challenges You’ll Take On
- Build and scale a robust knowledge platform that powers various LegalOn products by structuring unorganized data into reusable knowledge
- Lead the development and operation of internal web applications used for document processing and information extraction
- Drive cross-functional collaboration to streamline data ingestion, annotation, and review workflows across the organization
■ What You’ll Do
- Define and drive the technical vision, architecture, and roadmap for the knowledge platform and internal tools
- Collaborate with product managers, designers, and AI engineers to identify opportunities and prioritize features
- Manage day-to-day execution of software projects, ensuring high quality and timely delivery
- Support the growth and engagement of a high-performing engineering team through hiring, mentoring, and performance management
- Continuously improve the team’s development lifecycle, including design reviews, testing strategies, deployment automation, and operational excellence
The details are described in the Notion page below:
https://legalforce-recruit.notion.site/LegalOn-Technologies-f5ebe38a6009428ab0fb1714efd3c90a
必須スキル
- 5+ years of professional software engineering or AI engineering experience
- 2+ years of engineering management experience, including team leadership and project delivery
- Experience developing and operating web applications and APIs
- Strong problem-solving and technical communication skills
- Bachelor's Degree in Computer Science or a related technical field
- Japanese language proficiency equivalent to JLPT N2 or higher
- Business-level English proficiency, including:
- Reading and writing skills for technical and business documentation
- Clear and effective communication in both verbal and written formats
歓迎スキル
- Experience managing a team of 5 or more engineers, including performance management
- Hands-on experience with Large Language Models (LLMs), including prompt engineering, fine-tuning, or integration into real-world applications
- Experience building AI-native products where AI is central to user workflows
- Experience designing and building internal tools to support content or data operations
- Familiarity with web applications tech stack and micro-service architectures
- Knowledge of document processing, information extraction, or knowledge management systems
- Strong collaboration skills with cross-functional teams
- Strong communication skills, with the ability to work effectively across diverse cultures in both English and Japanese
応募概要
| 給与 | 10.3million to 25million yen per year |
|---|---|
| 勤務地 | 19F, Shibuya Sakura Stage SHIBUYA TOWER, 1-1 Sakuragaoka-cho, Shibuya-ku, Tokyo 150-6219, Japan This is not a fully remote position. Hybrid work is required, and visa support is available. |
| 雇用形態 | Full-time |
| 勤務体系 | - Working hours: Full flex system without core hours - Overtime work beyond designated working hours: Yes - Break time: 1 hour |
| 試用期間 | 3 months |
| 福利厚生 | Work Environment & Tools - Choice of laptop: Mac or Windows (Mac with US keyboard available) - Access to generative AI tools: ChatGPT Enterprise, Notion AI, Gemini for Google Workspace, Slack AI - Access to developer tools: Claude Code, Cursor, GitHub Copilot, Devin, Codex, Figma AI, and more - Side jobs permitted with prior approval Professional Development - Self-development support available for books, online courses, certifications, and more - Language learning support Time Off - Weekends and national holidays off - Paid leave and year-end/New Year holidays - Special leave: sick leave, work-life balance leave, birthday leave - Maternity leave, childcare leave, and nursing care leave Health & Welfare - Social insurance coverage: Health insurance, employee pension insurance, unemployment insurance, and worker’s compensation insurance - Influenza vaccination support - No indoor smoking (a designated smoking room is available in the building) - Employee stock ownership program - Certified as an “Eruboshi” company (recognized for promoting women’s participation and advancement in the workplace) |
企業情報
| 企業名 | 株式会社LegalOn Technologies |
|---|---|
| 設立年月 | 2017年4月 |
| 本社所在地 | 東京都渋谷区桜丘町1-1 渋谷サクラステージSHIBUYAタワー19階 |
| 資本金 | 198.5億円(資本準備金等含) |
| 従業員数 | 約607名(役員含む/2025年9月時点) |