App Developer

Architect, build, and ship new features in our React Native mobile app end-to-end Design cross-platform client-side systems (data models, networking, caching, and state management) that scale with product growth Own delivery of individual feature modules—from spec through QA to release on both iOS and Android Monitor and manage technical debt; proactively refactor code to improve performance and maintainability Make thoughtful trade-offs between speed and scalability while delivering high-impact features Collaborate closely with a small, focused team of engineers; provide mentorship and conduct thoughtful code reviews Partner with Product and UX to ensure high-quality user experience, responsiveness, and stability

Jamm enables online customers to make digital payments directly from their bank account. Their service is compatible with over 300 financial institutions, including major Japanese banks.