Senior Database Administrator (DBA), Infra (Fintech)

Location: Seoul, South Korea. The role supports Korean production systems and includes participation in the on-call rotation.

Company

Airwallex provides AI-native financial infrastructure and cross-border payment products for businesses worldwide.

What you will do

• Operate and optimize production PostgreSQL, Redis, and Redis Cluster environments on Google Cloud, with a secondary AWS footprint.
• Manage high availability, replication, failover, connection pooling, backups, replicas, snapshots, and disaster recovery.
• Automate provisioning, configuration, access management, and operational processes using scripts, software, and infrastructure-as-code.
• Define database standards for schemas, indexes, queries, and usage, while operating monitoring and alerting.
• Lead database performance and incident troubleshooting and own privileged access, change approvals, and compliance evidence.
• Collaborate with local product, engineering, security, and compliance teams and the global DBA team.

Requirements

• At least 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, plus experience operating databases on a major public cloud, preferably Google Cloud.
• Proficiency in Linux, shell scripting, and at least one programming language, with strong analytical, communication, problem-solving, ownership, and documentation skills.
• Business-level English and professional Korean required.

Nice to have

• Experience with distributed databases, Kafka, Elasticsearch, or ClickHouse.
• Experience with Terraform, Ansible, database containerization, or Kubernetes.
• Experience in a Korean bank, payments company, or licensed fintech.
• Familiarity with Korean data residency, network separation, access control, audit requirements, regulatory examinations, or external audits.
• Experience building or taking ownership of a database environment from the ground up.

Culture & Benefits

• Work with local and global teams across multiple offices and time zones.
• Contribute to infrastructure supporting a global engineering organization and cross-border payment products.
• Participate in an on-call rotation for Korean systems.