Build backend services, APIs, data models, and product workflows for AI and software products. Integrate frontend applications with databases, workers, external systems, and AI/ML components. Collaborate across engineering teams on complete product features, deployment, observability, testing, code review, documentation, and system reliability. The role requires ownership of end-to-end web application development, with a backend emphasis, in a small Osaka/Sakai-based engineering team.

Design, deploy, and operate infrastructure for AI and software products. Own CI/CD pipelines, Kubernetes and containerized services, backend and worker systems, monitoring, secrets, networking, backups, and recovery. Support hybrid cloud and on-premise environments, ML workloads, and developer tooling. Collaborate with engineering teams to improve reliability, deployment, debugging, documentation, and scalability.