Backend Engineer / バックエンドエンジニア (Core Banking & Product Features)

📋 Description Join a full-scratch project renewing core banking systems. Develop and operate backend applications in Java/Kotlin for core banking. Design for performance and high reliability as a financial platform. Collaborate on architecture selection and middleware choices. Understand and leverage infrastructure to resolve system challenges. Contribute to microservice performance tuning and monitoring. 🎯 Requirements 3-5 years of backend development experience Practical experience in Java; strong skills in other languages Data structures, algorithms, OOP fundamentals DB schema design (RDB, NoSQL) and efficient query creation Web app development and tuning with security considerations English business-level conversational proficiency 🎁 Benefits VISA sponsor + Relocation support PayPay Inside-Out and related corp. blogs access Health/pension/insurance, 401K, language support Flexible work arrangements with hybrid office expectations