I’m supporting one of Japan’s fast-growing enterprise AI companies, building AI Agents that connect with company data and SaaS tools, understand business workflows, and execute tasks end-to-end.
They are hiring early-career Software Engineers who want to build their careers in AI and gain hands-on experience with production-grade AI systems.
¥8M–14M + Stock Options Tokyo | Hybrid Python / TypeScript / Go / GCP / Kubernetes Claude Code MAX / Cursor / ChatGPT / Devin provided
You can join one of two engineering tracks depending on your strengths and interests: Forward Deployed Engineering Work closely with customers to understand real business problems, then design and build AI Agents, workflows, APIs, web applications, and data pipelines from PoC through production. Core Product Engineering Build the core platform behind enterprise AI Agents, including Agent Runtime, SDKs, orchestration, memory, model routing, backend services, and shared infrastructure. You’ll also work on some of the harder problems behind production AI, including:
LLM evaluations
Observability and monitoring
Guardrails and human-in-the-loop systems
Reliability, security, and cost optimization
AI-native development workflows
Who they’re looking for
Software engineering experience in Backend, Full Stack, or AI-related development
Hands-on development experience with Python, TypeScript, Go, or similar languages
Experience working across requirements, design, implementation, and testing
Some experience building or experimenting with LLM / Generative AI applications
Fluent Japanese for technical and business discussions
If you want to build your career in AI while continuing to grow as a strong software engineer, feel free to DM me for the full JD.