Senior Database Administrator (DBA), Infra

About the role

Airwallex, the AI-native financial operating system for global commerce, is hiring a Senior Database Administrator for its Korean production database environment. The role owns the reliability, security and day-to-day operation of the PostgreSQL, Redis and Redis Cluster environments running on Google Cloud with a secondary AWS footprint, working with local product, engineering, security and compliance teams and the global DBA team. It is based in Seoul.

Key responsibilities

• Own the reliability, security and operation of the Korean production database environment supporting cross-border payment products.
• Operate and optimise PostgreSQL, Redis and Redis Cluster environments on Google Cloud, with a secondary AWS footprint.
• Manage high availability, replication, failover, backups and disaster recovery for production databases.
• Ensure compliance with Korean data residency and security requirements across backups, replicas and snapshots.
• Build automation for provisioning, configuration, access management and operational processes using scripts, software and infrastructure-as-code.
• Improve reliability and performance through monitoring, alerting, schema standards, indexing, query optimisation and incident troubleshooting.
• Strengthen privileged access, change approval, compliance evidence and operational documentation.
• Partner with local and global teams to improve database security, operational efficiency and on-call readiness.

Required profile

• 4+ years of experience administering production relational databases and live transactional workloads.
• Strong PostgreSQL experience, including high availability, replication and cluster management.
• Experience with Patroni, pgpool-II, PgBouncer or similar failover and connection-pooling tools.
• Strong Redis and Redis Cluster administration experience.
• Experience operating databases on a major public cloud, preferably Google Cloud.
• Proficiency in Linux, shell scripting and at least one programming language.
• Business-level English and professional Korean.
• Preferred: experience with distributed databases, Kafka, Elasticsearch or ClickHouse; Terraform, Ansible or similar IaC tools; containerisation or Kubernetes; a background in a Korean bank, payments company or licensed fintech; familiarity with Korean data residency, network separation, access control or audit requirements; experience supporting regulatory examinations or external audits; experience building a database environment from the ground up.