Platform Engineer (DB Specialist)
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.
※ Please note that you cannot apply or be selected in parallel with PayPay Corporation, PayPay Card Corporation and PayPay Securities Corporation.
Job Description
We are working to provide the best financial services to users in Japan. We empower PayPay Card products by realizing efficient, stable and optimized storage services. PayPay Card is looking for Database Administrators/Engineers who specialize in databases at scale on mission critical systems.
Main Responsibilities
- Manage day-to-day database operations including monitoring, configuration, upgrades, scaling, backups, and data migrations.
- Continuously improve database operations through automation, tooling, and process optimization.
- Manage backups, replication, failover, and disaster recovery (DR) strategies to ensure business continuity.
- Implement and maintain database security policies, including access control and auditing.
- Ensure compliance with internal policies and external regulatory standards (e.g., PCI DSS).
- Troubleshoot and resolve performance and stability issues in production environments.
- Participate in on-call rotation and incident response using tools like PagerDuty to support 24/7 availability of critical systems.
- Collaborate with engineering teams to design scalable data models and optimize query performance.
- Research, test, and adopt emerging technologies in the database and cloud ecosystem to enhance platform capabilities.
- Create and maintain documentation for architecture, standard procedures, and operational best practices to support effective knowledge sharing and decision-making.
- Work closely with cross-functional teams to ensure the reliability, availability, and scalability of database infrastructure.
※ Depending on the team you are assigned to, there is a possibility of being required to work in the office.
Tech Stack
- Languages: Python, Shell, SQL
- Databases: Oracle, MySQL (including Aurora MySQL and RDS for Oracle)
- Cloud: AWS (RDS, Aurora, Elasticache, DynamoDB, EC2, S3, lambda, Secrets Manager, Cloudwatch etc.)
- Tools: GitHub, Terraform, Flyway
- Collaboration: Slack, Zoom, Jira, Confluence, Miro
Required Qualifications
- More than 5 years of DBA experience with a minimum of 3 years of MySQL experience
- More than 3 years of AWS experience in recent years
- Practical experience with Infrastructure as Code (IaC) using Terraform.
- Interested in new technologies and willing to improve operational quality and efficiency
- Strong scripting skills (Python, Shell, etc.) for automation and tooling.
- English business proficiency
Preferred Qualifications
- Experience in automating operations related to Database or AWS
- Familiarity with containerized environments (Docker, Kubernetes).
- Hands-on experience in operating AWS Aurora database (Postgres/Mysql compatible)
- Hands-on experience in operating AWS RDS for ORACLE
- Japanese conversational proficiency is a plus
- Experience working with NoSQL such as Redis, Valkey and DynamoDB
- Experience with DBs cost reduction
- Experience with DBs Disaster Recovery strategies
Working Conditions
Employment Status
- Full Time
Office Location
- Hybrid Workstyle (flexible working style including Remote and office)
※There are no fixed rules regarding office attendance in Technology group; it depends on each individual's discretion.
Work Hours
- Full Flex Time (No Core Time)
- In principle, 9:00am ~ 5:45pm (actual working hours: 7h45m + 1h break)
Holidays
- 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 Group'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.
Salary
- Annual salary paid in 12 installments (monthly)
- Reviewed once a year
- Special Incentive once a year *Based on company performance and individual contribution and evaluation
- Overtime allowance, Late overtime allowance, Commuting and transportation expenses
Benefits
- Social Insurance (health insurance, employee pension, employment insurance and compensation insurance)
- 401K