Database Administrator — SaaS Infrastructure (SG)

Longbridge; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

Longbridge in Singapore is seeking an experienced DBA to own the data layer of our multi-region SaaS clusters. You will manage day-to-day database operations across regions (US/SG/JP), ensuring high availability and strong data consistency.

You will design multi-tenant data solutions, optimize performance, and contribute to automated onboarding and recovery drills. English communication is essential; Mandarin is a plus.

Qualifications

• 3+ years of production DBA experience with PostgreSQL and/or MySQL.
• Hands-on experience with HA and backup/recovery solutions (e.g., replication, Patroni, MHA, or Redis Sentinel).
• Solid performance tuning skills: slow-query governance, indexing, execution plans, locking issues.
• Experience with AWS RDS/Aurora and Multi-AZ deployment.
• Proficient in English; Mandarin is a plus.

Responsibilities

• Operate the databases of our multi-region SaaS clusters day to day: deployment, upgrades, backup and recovery, monitoring and incident handling.
• Help design and deliver multi-tenant SaaS data solutions with tenant isolation and onboarding.
• Own multi-AZ high availability and DR drills within each region.
• Run capacity planning and performance tuning; participate in P0/P1 incident response and post-mortems.
• Use and improve our database tooling (Terraform, Bytebase, self-service query tools) for automation.
• Review schema designs and SQL with engineering; gate production changes and share on-call with SRE.

Skills

PostgreSQL

MySQL

DBA experience

Live incident handling

Performance tuning

AWS RDS/Aurora

English communication

Mandarin a plus

Tools

Patroni

MHA

Redis Sentinel

Terraform

Bytebase

ClickHouse

TimescaleDB

Kubernetes

Job description

Our databases power order management, market data, clearing and settlement, risk controls, and customer asset systems - with high demands on availability, data consistency, and multi-jurisdiction compliance. We are looking for a DBA to join our Singapore team and take ownership of the operations and build-out of the data layer of our multi-region SaaS clusters, with plenty of room to grow into financial-grade data architecture and multi-market compliance practices.

What You Will Do

• Operate the databases of our multi-region (US/SG/JP) SaaS clusters day to day: deployment, upgrades, backup and recovery, monitoring and alerting, and incident handling - mainly PostgreSQL, MySQL, Redis, plus analytics engines such as ClickHouse.
• Help design and deliver our multi-tenant SaaS data solutions: tenant isolation (dedicated instance / database / schema), automated tenant onboarding (provisioning, password rotation), and per-tenant backup and recovery.
• Own multi-AZ high availability and DR drills within each region, meeting RPO/RTO targets for core systems.
• Run capacity planning and performance tuning: slow-query governance, indexing and execution plans, connection pooling; participate in P0/P1 incident response and post-mortems.
• Use and improve our database platform tooling (Terraform, Bytebase, self-service query tools) to make launching a new market or onboarding a new tenant increasingly automated.
• Review schema designs and SQL with engineering teams, gate production changes, and share on-call duties with SRE.

What We Are Looking For

• 3+ years of production DBA experience with PostgreSQL and/or MySQL, including independently handling live incidents.
• Hands-on experience with mainstream HA and backup/recovery solutions (e.g., replication, Patroni, MHA, or Redis Sentinel), including real failover or recovery drills.
• Solid performance tuning skills: slow-query analysis, index design, reading execution plans, diagnosing locking and connection-pool issues.
• Working experience with AWS RDS/Aurora (or equivalent cloud databases), including Multi-AZ deployment and cloud backup/recovery patterns.
• Working English: able to read and write documentation and join meetings in English; Mandarin is a plus.

Nice to Have

• Financial industry experience - database operations at a broker, exchange, payments, or banking system; familiarity with order, market-data, or settlement data models is a bonus.
• SaaS / multi-tenancy - involvement in designing or operating multi-tenant data platforms.
• Larger-scale experience - systems with 100k+ QPS or TB+ data volumes.
• Database internals - deep understanding of MVCC, transaction isolation, and replication; able to analyze issues at the protocol or source-code level.
• Engineering skills - Python/Go/Shell scripting for ops tooling; Kubernetes experience.
• Time-series / analytics - production experience with ClickHouse or TimescaleDB.