Senior 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:** Design, support the implementation and deliver large scale, and complex, systems Manage teams stakeholders such as product managers or frontend engineers but also other team leads or non-tech stakeholders. Leverage the infrastructure to solve such large scale problems. Acts as a gatekeeper to the team quality standard Triage, debug and resolve product issues or other incoming inquiries Mentor other team members and saveguard the team quality standards Requirements Experience in any OOP based language e.g Kotlin, Java, C#, Scala etc. Experience with RDBMS and NoSQL databases, along with distributed cache. Strong fundamentals in data structures, algorithms and object oriented programming. In-depth understanding of concurrency and distributed computing. Degree in Computer Engineering or Computer Science or 5+ years equivalent experience in SaaS platform development. Nice to haves While not specifically required, tell us if you have any of the following. Experience with Java/Spring Boot framework Experience with implementing platform components such as RESTful APIs, Pub/Sub Systems, Database Clients. Experience in system design for high traffic application with scalability in mind Experience with microservices & event-driven architecture Experience gRPC communication design and implementation Experience in a multicultural environment Japanese conversational proficiency is a plus **Requirements:** Experience in any OOP based language e.g Kotlin, Java, C#, Scala etc. Experience with RDBMS and NoSQL databases, along with distributed cache. Strong fundamentals in data structures, algorithms and object oriented programming. In-depth understanding of concurrency and distributed computing. Degree in Computer Engineering or Computer Science or 5+ years equivalent experience in SaaS platform development. **Nice to have:** While not specifically required, tell us if you have any of the following. Experience with Java/Spring Boot framework Experience with implementing platform components such as RESTful APIs, Pub/Sub Systems, Database Clients. Experience in system design for high traffic application with scalability in mind Experience with microservices & event-driven architecture Experience gRPC communication design and implementation Experience in a multicultural environment Japanese conversational proficiency is a plus