Senior Backend Engineer

PayPay Card, established in 2021, is a FinTech company that's part of the rapidly expanding PayPay ecosystem in Japan. With over 65 million users, PayPay is used by approximately one in two smartphone users in Japan. We're seeking backend engineers to build and rebuild robust, scalable, and maintainable services.

Our mission is to revolutionize the credit card industry by:

1. Enhancing the credit card experience through new functionalities and integration with the PayPay ecosystem.
2. Re-architecting our systems landscape to power a top-notch user experience.

As a backend engineer, you'll:

• Design and deliver large-scale, complex systems
• Manage stakeholders across various teams
• Leverage infrastructure to solve large-scale problems
• Act as a gatekeeper for team quality standards
• Debug and resolve product issues
• Mentor team members

Our tech stack includes:

• Backend: Spring Boot (Java 11/17), some legacy Java EE
• Testing: JUnit, Mockito
• Deployment: AWS ECS, CodePipeline
• Infrastructure: AWS, CloudFormation, CloudWatch
• Tools: GitHub, IntelliJ, Gradle, Confluence, Miro, JIRA, Slack, Zoom, Office 365

We're looking for candidates with:

• Excellent Java and Spring Boot skills
• Experience with databases and distributed computing
• Strong fundamentals in data structures, algorithms, and OOP
• Experience with microservices and event-driven architectures
• Degree in Computer Engineering/Science or 5+ years equivalent experience
• English business proficiency

We offer:

• Flexible work hours and location (anywhere in Japan)
• Competitive salary with annual reviews and special incentives
• Comprehensive benefits including social insurance and 401K
• Opportunities for growth in a multicultural, fast-paced environment

Join us in shaping the future of fintech in Japan!