About PayPay

Toranomon, Tokyo

With over 47 million registered users (as of May 2022), 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

PayPay is looking for a Platform Engineer to work on our payment system to deliver the best payment experience for our customers.

The mission of our SRE team (which we call “Platform team” at PayPay) is to build and architect stable infrastructure so that we can provide secure service to all the customers with our highest speed. Our number of transactions as well as users have been increasing day by day since our first product release. The infrastructure/system must be capable of scale-out, and we need to always consider room for the growth. Since Paypay’s system is highly mission-critical, handling payment solutions - our top priority for the system is to be able to provide stable service.

From risk-hedging perspective, it is important to assure our infrastructure is maintained properly with a high level of usability so that even if our resources fail instances get down, we can continue our service. Our current phase is not yet a “maintenance” phase - as a platform engineer, you will be required to architect the whole system in a scalable manner while with employing a variety of technologies.

Main responsibilities:

Architect, maintain and tune our PayPay infra system with the following tech domains:

  • AWS
  • Kafka
  • Kubernetes

We rotate roles and responsibilities among those tech stacks, and you will be able to experience a wide range of technologies.

Qualifications

  • Minimum of 3 years of professional administration experience with at least one or few of the following:
    • Kubernetes
    • Security
    • RDS (e.g. MySQL, Aurora)
    • NoSQL (e.g. Redis, Elasticsearch, Cassandra)
    • MQ (e.g. Kafka)
    • Cloud Computing platforms (e.g. AWS, GCP)
  • Experience with Linux
  • Experience with one or more general purpose programming languages
  • Experience with one or more configuration management tools, such as Terraform, Ansible
  • Motivated to work with the platform and infrastructure for modern system using micro-service architecture
  • Bachelor’s or Master’s Degree in Computer Science or related field

Preferred Qualifications

  • Experience with Cloud Computing platforms (e.g. AWS, GCP)
  • Contribution to open source projects

Compensation

7 to 13.5 million JPY annually.

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Meet PayPay's Developers

Rapidly scaling to tens of millions of users

with Shilei Long

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...

Growing your career by asking for you want

with Ashwini Meshram

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...

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...

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...

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