Platform Engineer (PayPay Card)

About PayPay Card

PayPay Card Corporation was established in 2021 to provide users a FinTech service that is more accessible and convenient compared to previous credit cards and credit services, by integrating with the PayPay payment platform, which has surpassed 70 million users since its launch (as of July 2025).

We are looking for people who are passionate about refining our products at an overwhelming speed that other companies cannot match, as well as professionals who are interested in promoting the spread of cashless payments in Japan and the use of these payments as a financial life platform. Let us work together to create new value for users.

PayPay Card is looking for a Cloud infrastructure and platform engineer for PayPay Card's cloud system. This role will be responsible for the engineering of Cloud Infrastructure Platforms to provide robust, reliable and cost-efficient Platform so that we can deliver the best experience for our growing customers base.

Main Responsibilities

• Architect and build a robust, scalable and stable infrastructure
• Architect and build Infrastructure that is easily maintainable during patching and upgrades
• Architect and build Infrastructure with AWS regional level failure tolerance
• Work together with our Security Engineers to provision a secure Infrastructure
• Automations for AWS Deployments to ensure fast delivery of Cloud Services to our developers
• Provide through Automations means for developers to easily deploy resources on AWS.

Tech Stack

• AWS: VPC, EC2, ECS, EKS, Lambda, Cloudfront, MWAA, RDS, ElastiCache, DynamoDB, Opensearch, S3, CloudWatch, Cognito, SQS, KMS, Secret Manager, KMS, MSK, CodeCommit, CodeBuild, CodeDeploy, CodePipeline, CloudFormation and other services
• Terraform, Github Actions, Prometheus, Grafana, Dynatrace, Atlantis, ArgoCD, OpenTelemetry

Required Qualifications

• More than 5 years of technical experience in Cloud based Infrastructure Platform
• Ability to demonstrate high degree of ownership in a Production environment
• Good understanding of Cloud security best practices and payment industry compliance standards
• Expertise in designing, building and troubleshooting large-scale streaming and distributed systems using Kafka.
• Expertise in building Robust platforms based on NoSQL/KVS datastores like DynamoDB, Opensearch/ Elasticsearch and Redis.
• Experience in Cloud infrastructure and platform systems availability, performance and cost management
• Extensive technical hands-on experience of Computing, Storage and Analytical Services on Cloud(AWS)
• Experience with IAC tools in AWS such as Terraform, CloudFormation, CDK
• Experience with Cloud Services Monitoring, Detection and Response
• Experience in Cloud Services Performance Tuning, cost controls and management
• Experience in Cloud Infrastructure Service patching and upgrades
• PayPay DevOps emphasize automation. Demonstrated skill with the following are required:
• Python
• ShellScripting
• Go/ Rust (optional)
• Have excellent oral, written, verbal and interpersonal communication skills.

Preferred Qualifications

• Bachelor’s degree and above in a technology related field
• Experience with other cloud service providers (e.g GCP, Azure)
• Experience with Kubernetes (CKA, CKAD or CKS)
• Experience with Event-Driven Architecture (Kafka preferred)
• Experience using and contributing to Open Source tools
• Experience in managing IT compliance and security risk
• Published papers / blogs / articles - Relevant and verifiable certifications
• Bilingual in English and Japanese is nice to have, but not required. Proficiency in either language is fine