This position is closed and is no longer accepting applications.

Site Reliability Engineer

PayPay Minato-ku, Tokyo
  • 💴 ¥7M ~ ¥14M annually
  • 🏡 Fully remote (from Japan)
  • 🧪 5+ years experience required
  • 💬 No Japanese required
  • 🌏 Apply from abroad
  • 🧳 Relocate to Japan

About PayPay

PayPay Minato-ku, Tokyo

With over 55 million registered users (as of February 2023), PayPay is the country’s most popular mobile wallet. Half of all of Japan's smartphone users are using it, and more than 2 billion payments made per year.

Key benefits

  • International engineering team
  • Japanese lessons on company time
  • Incredible scale

About the position

At PayPay, we’re constantly working on improving our systems and processes to support PayPay’s exponential growth. As an SRE at PayPay, we strive towards empowering our developers with the right tools and ensuring high availability and top-level performance so that our users can have a great experience with our services.

Considering PayPay’s growth, we are looking for experienced SREs who can deliver insights into system bottlenecks and ensure system reliability and scalability, while increasing the number of services that our company offers.

We are looking for individuals who can bring informed and unique viewpoints, enjoy collaborating with a cross-functional team and are actively pushing boundaries to develop reliable and scalable solutions and positive user experiences.


  • Analyze current technologies used in the company and develop monitoring and notification tools to improve observability and visibility
  • Ensure system stability by pre-emptively verifying failure scenarios and implement solutions to reduce MTTR
  • Develop solutions to improve system performance with a focus on high availability, scalability and resilience
  • Establish SLAs for service uptime and integrate with telemetry and alerting platforms to track and improve reliability of systems
  • Implement industry best practices for system development, configuration management and system deployment
  • Ensure seamless flow of information between teams by documenting knowledge gained
  • Be up to date on modern technologies and trends to advocate for inclusion within products if they add value


  • Experience troubleshooting, tuning high performance microservice architectures running on Kubernetes and AWS in highly available production environments
  • 5+ years experience in software development in Python, Java, Go, etc with strong fundamentals in data structures, algorithms, problem solving and complexity analysis
  • During the SRE selection process, you will have a coding challenge
  • Curious and proactive in finding performance bottlenecks, scalability and resilience problem areas and addressing them
  • Experience with observability tools and gathering data
  • Database knowledge such as RDS, NoSQL, distributed TiDB, etc.
  • Excellent communication skills, collaborative and getting things done attitude
  • Enjoy taking up a challenge and driving it to conclusion

Nice to haves

While not specifically required, tell us if you have any of the following.

  • Container image management and optimization
  • Experience in large distributed system architecture and capacity planning
  • Understanding of IaC, automation tools, terraform, cloud formation, etc.
  • Background in SRE/Devops concepts and implementation
  • Experience in managing monitoring tools like CloudWatch, NewRelic, Prometheus and reporting with Google BigQuery and Looker Studios
  • In depth knowledge of web technologies such as CloudFlare, Nginx, etc.


7 to 14 million JPY annually.

Meet PayPay's Developers

Ashwini leads one of PayPay’s payment sub-teams. She got there by doing something she’s done throughout her career: identifying something she wants to do and asking to do it.

Read her story...
Photo of Yoseph Savianto

iOS Development at PayPay

with Yoseph Savianto

Yoseph joined PayPay after being attracted to their mission of making Japan a cashless society. As an iOS Engineer, he originally joined their iOS feature team, but now works on their platform team, creating an internal SDK for their iOS and Android apps.

Read his story...

Shilei started working on PayPay before it launched, and has seen it grow into a product used by tens of millions of users. He explains how diversity has helped them overcome challenges, and what PayPay is looking for in candidates.

Read his story...
Photo of Adrian Mariadas

Refactoring PayPay’s Android App

with Adrian Mariadas

Adrian came to Japan to join PayPay as an Android Engineer. As the app has grown in scope, refactoring the codebase to ensure development can continue at a rapid pace has been a big part of his job.

Read his story...

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