Backend Engineer

PayPay, a rapidly growing FinTech company with over 65M users, is seeking a Backend engineer to work on their payment system. The ideal candidate will design large-scale systems, leverage infrastructure for high-throughput applications, and contribute to open-source projects. With a diverse team from over 50 countries, PayPay offers a dynamic work environment where you'll face new challenges daily.

Key responsibilities include:

• Designing complex, large-scale systems
• Understanding and leveraging infrastructure for high-throughput applications
• Developing tools and contributing to open-source projects
• Adopting a problem-solving mindset and supporting code in production

The tech stack includes Java, Kotlin, Scala, Spring Boot, MySQL, DynamoDB, Kafka, Docker, Kubernetes, AWS, and more.

Qualifications:

• 3+ years of Java experience or excellent skills in languages like Scala, Python, or Go
• Experience with NoSQL databases and distributed cache
• Strong fundamentals in data structures, algorithms, and OOP
• In-depth understanding of concurrency and distributed computing
• Degree in Computer Engineering/Science or equivalent experience
• Business-level English or Japanese

PayPay offers a flexible work environment with their WFA (Work From Anywhere at Anytime) policy, competitive salary, and comprehensive benefits including social insurance, 401K, and visa sponsorship.

Join PayPay to be part of a company that dares to create a future beyond imagination, constantly taking risks and challenging themselves in the exciting world of FinTech.