Backend Engineer

**About the company:** PayPay Card Corporation Chiyoda City, Tokyo PayPay Card was established in 2021 to provide users with more accessible and convenient FinTech services that were previously not possible with credit cards and credit services by integrating with the PayPay payment platform. **Responsibilities:** Support the design, implementation and delivery of large scale, and complex, systems, while collaborating with product managers, frontend engineers or other team members. Understand how to leverage infrastructure to solve large scale problems. Contribute to the team by sharing knowledge, participating in code reviews and providing feedback to uphold and ensure best practices. Triage, debug and resolve product issues or other incoming troubles inquiries Adopt problem solving as a way of life – always go to the root cause! Support the code you write in production. Requirements Skills in OOP language such as C# or other JVM language, such as Scala are welcome Experience with RDBMS, NoSQL databases along with distributed cache. Strong fundamentals in data structures, algorithms and object oriented programming. In-depth understanding of concurrency and distributed computing. Experience implementing platform components such as RESTful APIs, Pub/Sub Systems, and Database Clients. Experience with microservices and event-driven architectures. Experience designing high traffic systems. Degree in Computer Engineering or Computer Science or 3+ years equivalent experience in SaaS platform development. Nice to haves While not specifically required, tell us if you have any of the following. Domain-driven development knowledge Java/Spring Boot experience gRPC and Kafka development experience Experience in a multicultural environment Stakeholder management is welcomed Japanese conversational proficiency is a plus **Requirements:** Skills in OOP language such as C# or other JVM language, such as Scala are welcome Experience with RDBMS, NoSQL databases along with distributed cache. Strong fundamentals in data structures, algorithms and object oriented programming. In-depth understanding of concurrency and distributed computing. Experience implementing platform components such as RESTful APIs, Pub/Sub Systems, and Database Clients. Experience with microservices and event-driven architectures. Experience designing high traffic systems. Degree in Computer Engineering or Computer Science or 3+ years equivalent experience in SaaS platform development. **Nice to have:** While not specifically required, tell us if you have any of the following. Domain-driven development knowledge Java/Spring Boot experience gRPC and Kafka development experience Experience in a multicultural environment Stakeholder management is welcomed Japanese conversational proficiency is a plus