This position is closed and is no longer accepting applications.

Cloud Infrastructure Security Engineer

PayPay Minato-ku, Tokyo
    💴 ¥7M ~ ¥15M annually
    🏡 Fully remote
    🧪 3+ 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

PayPay is looking for a self-driven and motivated AWS SecOps (Platform Security) Engineer to help secure our payment platform. Our Platform/infrastructure is mainly based on AWS and GCP.


  • Security Architecture reviews and re-design of existing AWS and GCP infrastructure.
  • Security Architecture reviews and design of new AWS and GCP infrastructure.
  • Design and enforce secure infrastructure deployment and deployment flows.
  • Perform Infrastructure security testing and patching to keep up with recent security implementation and best practices.
  • Evaluating and Implementing new security technologies such as vulnerability testing, logging, monitoring and incident responses and maintaining them.
  • Working in a fast paced environment where projects and prioritization may change frequently, security will always remain.

Tech Stack

  • AWS: AM, VPC, KMS, EC2, CloudTrail, SecurityHub, GuardDuty, RDS, EKS, Elasticsearch, Elasticache and others
  • GCP: BigQuery, Storage & Google Analytics
  • TCP Networking, SSL/TLS, Key Management Systems
  • MySQL/AuroraDB, DynamoDB, ELK, Kafka, Redis, TiDB
  • Terraform, Jenkins, Github Actions
  • Snyk, Snort,
  • PlantUML, Cloudcraft
  • Slack, Zoom


  • Minimum of 3 years of demonstrated experience security over 200+ servers in a public facing, production environment doing the following:
  • PayPay DevOps emphasizes automation. Demonstrated skill with Python and Shell Scripting is required
  • Initial verification, design and implementation of security in AWS using the following AWS Services:
    • IAM, VPC, KMS, EC2, CloudTrail, SecurityHub and GuardDuty
    • Automated security monitoring and incident response in AWS
    • IAC tools in AWS such as Terraform, Ansible
  • Securing Kubernetes and microservice architectures
  • Securing common Linux based infrastructure (primarily Amazon Linux and Ubuntu based)
  • Securing data systems such as RDS (e.g. MySQL, Aurora), NoSQL (e.g. Redis, Elasticsearch, Cassandra), and MQ (e.g. Kafka)
  • Experience with git and CI/CD tools such as Jenkins and ArgoCD
  • Motivated to work with the platform and infrastructure for modern system using micro-service architecture

Nice to haves

These aren’t required, but be sure to mention them in your application if you have them.

  • Experience with other cloud service providers (e.g GCP)
  • Experience managing Microsoft Windows servers
  • CVE Contributions
  • Open Source tools contributions
  • Published papers / blogs / articles
  • Relevant and verifiable certifications
  • JNLP Level 3 or above


7 to 15 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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