Full Stack Engineer

Skills

About the Role

You will design, implement, test, and operate backend Web APIs and large-scale data processing pipelines using Go, Python, and cloud services. You will build and maintain web frontends with TypeScript, React and Next.js, implement test automation and CI/CD, improve performance and refactor code, develop shared libraries and UI components, and respond to on-call incidents.

Requirements

• 2+ years backend development experience in Python or JavaScript
• 2+ years frontend development experience with TypeScript React or Next.js
• Design develop and operate Web APIs and data processing pipelines on cloud services
• Experience with database design development and operation (RDBMS NoSQL NewSQL)
• Experience using Git for version control
• Business level Japanese (JLPT N1 equivalent)

Responsibilities

• Develop and operate backend systems including Web APIs and data processing pipelines
• Design and implement frontend web applications with TypeScript React and Next.js
• Write and maintain automated tests and test code
• Improve performance and refactor legacy code to reduce technical debt
• Develop and maintain shared internal libraries and UI components
• Manage deployments and CI/CD pipelines
• Respond to on-call incidents and perform operational troubleshooting

Benefits

• Complete social insurance (Kanto IT Software Health Insurance Association)
• Commuting allowance
• Communication allowance
• On-call allowance
• Company-provided laptop (MacBook Pro or Windows PC)
• Paid holidays and leave including full weekends national holidays year-end new year annual paid summer sick and bereavement leave