Senior Exadata & Oracle DB Engineer — High Availability

DBS Bank Ltd; Singapore; On-site; SGD 110,000 - 160,000; Full time

Job summary

DBS Bank Ltd in Singapore is seeking an experienced Oracle Database Administrator to manage and support Oracle Exadata Database Machine environments, with a focus on high availability and performance.

You will monitor with Oracle Enterprise Manager, perform RMAN backups, apply patches, tune SQL, and collaborate with cross-functional teams to deliver resilient data services at DBS Asia Hub in Singapore.

Qualifications

• Strong experience in Oracle Database Administration.
• Hands-on Exadata storage cells, Smart Scans, HCC, and Flash Cache management.
• Proven RMAN backups, recovery, and data migration on large production databases.
• Deep knowledge of AWR/ASH/ADDM reports, SQL tuning, execution plans, and optimizer behaviour.
• Experience with patching, upgrading, and security hardening of Exadata.
• Preferred: Financial services or high-frequency trading environment experience due to high-availability needs.
• Experience with Oracle Enterprise Manager Cloud Control.
• Excellent troubleshooting and analytical abilities.
• Strong scripting (Bash, Python) for automation and monitoring.
• Experience with Bitbucket and code management practices.
• Strong documentation skills, including Confluence pages.

Responsibilities

• Manage and support Oracle Exadata Database Machine environments (primary role) and data engineering processes (secondary role).
• Use Oracle Enterprise Manager to monitor performance metrics and identify bottlenecks.
• Manage Oracle RAC, ASM, Grid Infrastructure, and Oracle Database instances on Exadata.
• Support high availability and disaster recovery solutions such as Data Guard and RAC.
• Execute backup/recovery procedures using RMAN to meet RPO/RTO requirements.
• Install, configure, patch, upgrade, and maintain Exadata software, Grid Infrastructure, and Oracle databases.
• Perform Exadata health checks, monitoring, capacity planning, and performance tuning.
• Monitor cell server performance and capacity planning.
• Manage storage cells, cell disks, grid disks, flash cache, IORM, and Smart Scan-related features.
• Provide support for critical incidents, perform RCA, and implement long-term fixes across database, clusterware, ASM, storage, network, and Exadata cell issues.
• Implement security best practices, access controls, auditing, compliance requirements, and hardening.
• Manage database access and security policies in a regulated environment.
• Develop automation scripts and tools using Python.
• Manage source code repositories and version control using Bitbucket.
• Create and maintain proper technical documentation and Confluence pages.
• Collaborate effectively with cross-functional teams to deliver solutions.

Skills

Oracle Database Administration

Exadata storage cells

RMAN backups

SQL tuning

Security hardening

Oracle Enterprise Manager

Python scripting

Bash scripting

Bitbucket

Confluence documentation

Tools

Oracle Enterprise Manager Cloud Control

RMAN utilities

Bitbucket

Confluence

Job description

DBS Bank Ltd in Singapore is seeking an experienced Oracle Database Administrator to manage and support Oracle Exadata Database Machine environments, with a focus on high availability and performance.

You will monitor with Oracle Enterprise Manager, perform RMAN backups, apply patches, tune SQL, and collaborate with cross-functional teams to deliver resilient data services at DBS Asia Hub in Singapore.