Software Engineer (Product)

Main Roles and Responsibilities Full-stack design and implementation of products: covering front-end (React/Next.js, etc.), backend APIs, databases, and cloud infrastructure. Building and operating the production platform: building and improving CI/CD, monitoring, scaling, security, etc. Integrating ML/AI models into products: collaborating with Applied Research Engineers to implement LLM inference, memory systems, search algorithms, etc., into the product. Fast development cycle: quickly moving from hypothesis generation to prototype, validation, and improvement, working closely with the Product Owner. Collaboration in a global team: working collaboratively within an international team using both Japanese and English. Requirements 3+ years of practical experience as a Software Engineer in a production environment, or equivalent experience. Experience with full-stack development. Experience in designing, developing, and releasing user-facing products. Experience in autonomous development within a small team. Practical experience with Python and one or more modern web frameworks. Experience with Docker containerization and using cloud platforms. Preferred Skills (Nice to Have) Experience with serving and inference optimization of AI/ML models. Experience with DevOps / Infrastructure as Code. Experience at an AI/ML startup or a product-driven company.