Senior Backend Engineer

PayPay is a FinTech company with over 65M users since 2018, offering payment solutions with a diverse team from 50+ countries.
Backend
Senior Software Engineer
Remote
1,000 - 5,000 Employees
5+ years of experience
Finance

Description For Senior Backend Engineer

PayPay, a leading FinTech company in Japan with over 65M users, is seeking a Senior Backend Engineer to join their dynamic team. This role offers an exciting opportunity to work on large-scale payment systems that serve millions of users daily. The position combines technical challenges with the chance to work in a diverse environment, featuring team members from over 50 different countries.

The ideal candidate will be responsible for designing and implementing high-throughput systems, working with modern technologies including Java, Kotlin, Scala, and various AWS services. You'll be part of a team that values technical excellence, innovation, and continuous learning. The role requires strong expertise in distributed systems, database technologies, and microservices architecture.

What makes this opportunity unique is PayPay's commitment to flexibility and work-life balance, offering a "Work From Anywhere at Anytime" policy with super flexible hours. The company provides comprehensive benefits including 401K, visa sponsorship, relocation support, and various insurance coverage. The technical stack is modern and diverse, incorporating cutting-edge technologies and tools.

The position offers significant growth potential within a rapidly expanding FinTech company. You'll have the opportunity to work on challenging problems at scale, contribute to open-source projects, and be part of shaping the future of digital payments in Japan. PayPay's vision of "UNLIMITED_" encourages risk-taking and innovation, making it an ideal environment for engineers who want to push boundaries and create impact.

This role would be perfect for a senior engineer who is passionate about building robust, scalable systems, enjoys working in a multicultural environment, and wants to be part of a company that's transforming the payment industry in Japan.

Last updated 7 days ago

Responsibilities For Senior Backend Engineer

  • Design large scale systems with high complexity to support high throughput applications
  • Understand how to leverage infrastructure for solving large scale problems
  • Develop tools and contribute to open source
  • Support the code in production
  • Participate in code reviews
  • Support team members by providing technical guidance
  • Identify performance improvements and optimize applications
  • Collaborate with product managers and stakeholders

Requirements For Senior Backend Engineer

Java
Kotlin
Scala
MySQL
Redis
Kafka
Kubernetes
  • Excellent skills in Java or other programming languages (Scala, Python, Go)
  • Experience with SQL and NoSQL databases
  • Strong fundamentals in data structures, algorithms and OOP
  • In-depth understanding of concurrency and distributed computing
  • Experience implementing RESTful APIs, Pub/Sub Systems, and Database Clients
  • Experience with microservices
  • Experience designing high traffic systems
  • Degree in Computer Engineering/Science or 5+ years experience in SaaS development
  • Business level English or Japanese

Benefits For Senior Backend Engineer

401k
Visa Sponsorship
Relocation Benefits
  • Social Insurance (health, pension, employment and compensation insurance)
  • 401K
  • Translation/Interpretation support
  • VISA sponsorship
  • Relocation support
  • Super Flex Time with no core hours
  • Annual leave up to 14 days in first year
  • Personal leave 5 days per year

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