English summary for screening — check the original posting before applying.
Seeking a Backend Engineer to join a team developing a web system supporting Japan's national health guidance program. You will contribute to new feature development, process improvement, and building the team's technical foundation, with opportunities to work across domains like frontend and infrastructure.
Must-haves
- 3+ years of web application design and development experience (any language)
- 2+ years of experience with web application frameworks like Ruby on Rails (7.x or higher)
- Experience implementing tests (e.g., RSpec)
- Experience using CI (e.g., GitHub Actions)
- Code review experience
Nice-to-haves
- Experience with git-flow
- Experience with GitHub PR-based development
- Experience with OpenAPI/Swagger API development
- Frontend development experience (Vue/Nuxt)
- Infrastructure construction/operation experience (AWS/Terraform)
- Experience in upstream processes like requirements definition/specification creation
- Experience developing with Rails 8
- Experience using tools like Claude Code
Tech stack
Ruby on RailsVueNuxtOpenAPIGitHub ActionsDatadogRollbarAWSTerraformClaude CodeDevin
Work style
Hybrid: 2-3 days/month in the Tokyo office. Full flex time with no core hours.
Other notes
Salary: Monthly 380,000 JPY ~ (Annual 5,000,000 - 10,000,000 JPY). Probation period: 3 months (no change in conditions).