Frontend Engineer – React and React Native

★Frontend Developer | Featured Fin-tech Company Business Level Japanese REQUIRED ✦In-house Products ✦Global Environment ★Annual salary: 4 million yen - 8 million yen -------------【About the company】------------- Development and provision of infrastructure and platform services for exchanging foreign and domestic currency cash and coins into existing and new electronic money Development and operation of a platform for issuing proprietary electronic money Planning, development, and operation of hardware, software, and payment services that contribute to the realization of a cashless society -------------【 Job Description】------------- The company is looking for a motivated Frontend Developer to join the team and contribute to the web and mobile application development. You'll be working primarily with React and React Native, helping build our Admin platform and mobile applications while gaining exposure to multi-platform SDK development. Key Responsibilities • Develop and maintain features for our React-based Admin platform • Contribute to our React Native mobile application development • Collaborate with senior developers on SDK development for Android, iOS, and Flutter • Write clean, maintainable code using TypeScript • Participate in code reviews and follow best practices • Debug and troubleshoot issues across web and mobile platforms • Work closely with designers to implement user interfaces that match specifications • Write unit tests and maintain code quality standards Tech Stack • Frontend: React, TypeScript • Mobile: React Native • SDKs: Android, iOS, Flutter -------------【 Requirements】------------- Required Qualifications • Basic understanding of JavaScript and modern frontend development • Familiarity with React fundamentals (components, hooks, state management) • Experience with or willingness to learn TypeScript • Understanding of HTML, CSS, and responsive design principles • Knowledge of version control systems (Git) • Strong problem-solving skills and attention to detail • Good communication skills and ability to work in a team environment • Comfortable communicating in English in day-to-day discussions Preferred Qualifications • Experience with React Native or mobile app development • Exposure to TypeScript in production projects • Familiarity with any of: Android, iOS, or Flutter development • Understanding of REST APIs and how to integrate them • Knowledge of state management libraries (Redux, Context API, etc.) • Experience with testing frameworks (Jest, React Testing Library) • Basic understanding of CI/CD pipelines -------------------------------------------------- Holidays ■ Saturday/Sunday/National Holiday ■ Annual Paid Leave ■ New Year Holiday Welfare ■ Full social insurance (Employment Insurance, Workers’ Compensation, Health Insurance, and Employees’ Pension Insurance) ■ Commuting allowance ■ Subsidy program for language learning (e.g., English) ■ Program for purchasing technical books and other publications ■ Company social gatherings (held at the end of every month) ■ Remote work available (based on preference; requires one day of in-office work per week) ■ No restrictions on hairstyles, hair color, nails, piercings, or attire -------------------------------------------------------------------------