Senior Frontend Developer

職務内容

1. 1Lead the design and implementation of user-facing features using React, Next.js, and TypeScript
2. 2Develop and maintain modern web applications utilizing SPA, SSR, and SSG architectures
3. 3Build responsive, high-quality user interfaces using Tailwind CSS
4. 4Design and implement multilingual features with internationalization (i18n) support
5. 5Create intuitive and scalable interfaces, including complex forms and workflows
6. 6Collaborate with backend engineers on API integrations, data flow design, and technical specifications
7. 7Contribute to backend implementation and enhancements when required
8. 8Develop and maintain unit and integration tests to ensure software quality
9. 9Drive improvements in application performance, maintainability, security, and developer productivity
10. 10Participate in code reviews and contribute to engineering best practices across the team

応募資格（必須）

• Proven professional experience building applications with React
• Strong experience developing with Next.js, including SSR, SSG, and App Router
• Hands-on experience with TypeScript and type-safe front-end development
• Experience building user interfaces with Tailwind CSS
• Understanding of front-end performance optimization and web security fundamentals
• Experience developing web applications with API integrations
• Full-stack mindset with willingness and capability to contribute beyond the front end
• Experience working within collaborative development environments using Git and code review processes
• Business-level English communication skills, including reading, writing, and speaking
• Daily conversational-level Japanese language ability
• Currently residing in Japan

歓迎する経験

• Experience developing Progressive Web Applications (PWA)
• Knowledge of front-end SEO best practices
• CI/CD pipeline operation and test automation experience
• Experience with Vitest or similar testing frameworks
• Experience using TanStack Query for state management and asynchronous data handling
• Experience with React Hook Form
• Knowledge of IndexedDB, Dexie, or client-side data storage solutions
• Backend development experience using Go or similar technologies
• Experience working within microservices environments

求めるスキル・経験