どんな仕事か: We’re a global leader in legal AI, merging cutting-edge tech with legal expertise. Since 2017, we’ve raised \28.6 billion, launched in the US in 2022, and introduced innovative products like LegalOn and CorporateOn.

? Why Join Us?
- Build backend systems from scratch
- Craft APIs & models for intelligent agent behavior
- Collaborate with LLMs and workflow engines
- Gain ownership in a fast-growing company

????? Your Role
- Develop backend systems & architectures
- Build APIs & task execution frameworks
- Collaborate with PMs, AI engineers & designers
- Mentor junior engineers
- Balance speed, scale, and safety in real-world contexts

Ready to shape the future of legal AI?
求められるスキルは: 必須 Required Skills / Qualifications
- 3+ years of professional experience in backend development for web applications
- Proficiency in programming languages such as Python, TypeScript, or Go
- Experience designing and implementing APIs (e.g., REST, WebSocket)
- Experience in designing and operating data当社s such as PostgreSQL, MySQL, or MongoDB
- Basic knowledge of microservices, distributed systems, and asynchronous processing
- Ability to work autonomously in collaboration with cross-functional roles such as product managers, designers, and AI engineers
- Japanese language proficiency equivalent to JLPT N3 or above

歓迎 Preferred Skills / Qualifications
- Foundational understanding of LLMs or AI Agents, or experience developing related products
- Experience in session management, job scheduling, and queue processing (e.g., Redis, Kafka, SQS)
- Knowledge of infrastructure tools such as Docker and Kubernetes
- Experience with CI/CD pipelines, test automation, and observability/monitoring tools
- Experience in designing and reviewing systems with a focus on security and scalability
- Hands-on experience in early-stage startups or new business development environments
- Strong communication skills, with the ability to work effectively across diverse cultures in both English and Japanese
雇用形態は: 正社員
どこで働くか: 東京都
勤務時間は: コアタイムなしのフルフレックス制
給与はどのくらい貰えるか: 700万円～1249万円
待遇・福利厚生は: ●社会保険完備（健康保険、厚生年金保険、雇用保険、労災保険）
●オフィスおかん、ウォーターサーバ
●語学学習補助
●技術書購入
●インフルエンザ予防接種補助
●屋内禁煙（建物内に喫煙室あり）
●各種社内サークルあり
●弁護士会費補助（一律月4万円の支給）
●副業可（許可制）
休日休暇は: ●完全週休2日制（土・日・祝）
●年間休日120日以上
●年末年始休暇／有給休暇／傷病休暇／産前産後・育児休業／介護休業

Software Engineer, Backend - AI Agent

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