Fukuoka Computer Futures

We are hiring a Senior Software Engineer to join a cloud-based SaaS product team serving corporate users in Japan.

You will work on core web applications that require high availability, scalability, and long-term maintainability.

Responsibilities:

  • Design, develop, and operate web applications end-to-end

  • Lead backend development using Ruby on Rails

  • Collaborate with frontend engineers using React and TypeScript

  • Design and implement APIs (REST / GraphQL)

  • Contribute to system architecture, performance, and reliability

  • Support and mentor other engineers on the team

  • Work in an Agile/Scrum-based development environment

Tech stack includes Ruby on Rails, Go, React, TypeScript, AWS, Kubernetes, Terraform, Kafka, and MySQL.

English is the primary working language. Japanese is not required, but willingness to learn is welcome.

This role offers a hybrid work style, modern development practices, and the opportunity to work on complex, business-critical systems.

Desired Skills and Experience

  • Strong experience in backend development using Ruby (Rails)

  • Experience building and operating large-scale web applications

  • Frontend development experience with React and TypeScript

  • API design and development using REST and/or GraphQL

  • Experience with cloud infrastructure on AWS

  • Familiarity with microservices and distributed systems

  • Experience with CI/CD pipelines and DevOps best practices

  • Agile/Scrum development experience

  • Ability to lead technically and mentor other engineers

  • Interest in improving development efficiency using AI tools



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