About PayPay

PayPay is a fintech company that has grown to over 55M users since its launch in 2018. Our team is hugely diverse with members from over 50 different countries. To build "PayPay", we allied with Paytm; the biggest payment service company in India. Based on their customer-first technology, we created and expanded the smartphone payment service in Japan.Our biggest competitor is "cash". We seek people who can accept this challenge positively, brush up the product at a tremendous speed, and promote PayPay with professionalism and passion.

Job Description

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:

  • Kafka
  • Kubernetes

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

Tech Stack

| Python, groovy, Bash shell, HCL(, yaml)
| Kubernetes, GitOps, Argo CD, Argo rollouts, New Relic, Prometheus, Artifactory, AWS, GCP
| Terraform, Ansible, GitHub, GitHub Actions, Jenkins, grpc, gitops
| NRQL, PromQL, Kibana, Bigquery
| MySQL/AuroraDB, TiDB, DynamoDB, ELK, Kafka, Redis, nginx, envoy, openresty
| Slack, Zoom, Confluence, JIRA, F2F


  • Minimum of 3 years of professional administration experience with at least one or few of the following:
    • Kubernetes
    • Kafka
  • Cloud Computing platforms (e.g. AWS, GCP)
     * We heavily rely on AWS, so those without previous AWS experiences must expect to catch up with it after joining us
  • Experience with one or more general purpose programming languages
  • Experience with one or more configuration management tools, such as Terraform, Ansible
  • Working knowledge of git and CI/CD tools
  • 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
  • Business level of English or Japanese

Preferred Qualifications

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

PayPay 5 senses

Working Conditions 

Employment Status

  • Full Time

Office Location

Work Hours

  • Super Flex Time (No Core Time)
  • In principle, 10:00am-6:45pm (actual working hours: 7h45m + 1h break)


  • Every Sat/Sun/National holidays (In Japan)/New Year's break/Company-designated Special days

Paid leave

  • Annual leave (up to 14 days in the first year, granted proportionally according to the month of employment. Can be used from the date of hire)
  • Personal leave (5 days each year, granted proportionally according to the month of employment)
    *PayPay's own special paid leave system, which can be used to attend to illnesses, injuries, hospital visits, etc., of the employee, family members, pets, etc.


  • Annual salary paid in 12 installments (monthly)
  • Based on skills, experience, and abilities
  • Reviewed once a year
  • Special Incentive once a year *Based on company performance and individual contribution and evaluation
  • Late overtime allowance, Work from anywhere allowance (JPY100,000)


  • Social Insurance (health insurance, employee pension, employment insurance and compensation insurance)
  • 401K
  • Language Learning support
  • Translation/Interpretation support
  • VISA sponsor + Relocation support

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