English summary for screening — check the original posting before applying.
Develop backend systems for in-house products like OPTiM Biz and client-facing AX/DX products. You will lead architectural design, API development, and database optimization, contributing to Japan's core industries through AI and IoT.
Must-haves
- Experience in backend (server-side) architecture design, API development, or database optimization.
- Willingness to be assigned to tasks based on your experience and desired technologies (Go, Java, Python, Ruby on Rails, etc.).
Nice-to-haves
- Experience with AI/LLM tools (ClaudeCode, Codex, etc.).
- Experience with frontend technologies (TypeScript, React, Next.js, Vue.js).
- Experience with mobile/client application development (Swift, Kotlin, Objective-C, etc.).
- Experience with cloud platforms (AWS, Azure) and infrastructure tools (Terraform, Docker, Podman).
Tech stack
GoJavaPythonRuby on RailsTypeScriptReactNext.jsVue.jsSwiftKotlinObjective-CC++C#AWSMicrosoft AzureTerraformDockerPodman
Work style
Onsite (Location not specified)