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Build and maintain the core banking backend in C and Java, designing high-performance, reliable microservices for a rapidly growing fintech platform with 70M+ users.
Build and run Java/Kotlin backend services for PayPay’s core banking platform, designing scalable microservices on AWS with Spring Boot, Kafka, and Redis while ensuring high reliability for a 70M-user fintech app.
Backend Engineer at PayPay building and scaling high-throughput payment systems using Java/Kotlin, distributed databases, and AI-augmented workflows.
You will develop and operate Java and Kotlin backend applications for core banking systems. You will design reliable, high-performance applications and architecture, select middleware, use infrastructure to resolve…
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SoftBank Vision Fund