Senior DBA - Oracle & SQL High Availability Lead

Goldtech Resources Pte Ltd; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Goldtech Resources Pte Ltd seeks a Senior Database Administrator to join our Managed Services team. You will oversee Oracle and SQL Server databases in a 24x7 enterprise environment, driving performance, security, and reliability across mission-critical systems.

You will lead optimization, hardening, migrations, and automation, collaborating with internal teams and customers to uphold system integrity and ensure business continuity. 5+ years of hands-on experience required.

Qualifications

• Bachelor’s Degree in IT, IS, Computer Science, or related disciplines.
• Minimum 5 years of hands-on Oracle and Microsoft SQL database administration experience.
• Strong proficiency with Oracle 12c/19c, Oracle RAC, SQL Server 2016–2022, and cloud environments (Azure/AWS).
• Skilled in database backup, recovery, security implementation, tuning, and high-availability environments.
• Solid understanding of UNIX and Windows OS.
• Strong analytical, troubleshooting, and communication skills.
• Ability to work independently in a fast-paced operational environment.
• Experience supporting government sector environments is preferred.

Responsibilities

• Manage and administer Oracle and SQL Server databases in a 24x7 enterprise environment
• Conduct daily database health checks, performance tuning, optimization, and capacity planning
• Implement database security measures, hardening standards, and patches
• Automate database setup, backup, restore, and monitoring processes
• Create and configure database structures, files, logs, indexes, and storage allocations
• Oversee housekeeping activities, object validation, fragmentation checks, and re-indexing
• Verify database integrity during system upgrades, deployments, and maintenance windows
• Respond to database alerts, anomalies, and incidents with timely troubleshooting and root cause analysis
• Work with service desk teams, customers, and third-party vendors to resolve database-related issues quickly
• Support DR execution and ensure successful rebuilds for production or DR systems
• Maintain accurate documentation including deployment guides, checklists, operations manuals, and DR procedures
• Prepare monthly reports on database uptime, performance, and growth trending
• Produce ad-hoc investigative reports for audits, capacity planning, and problem resolution

Skills

Database administration

Performance tuning

Automation

Documentation

Troubleshooting

Communication skills

Independent work

Education

Bachelor's Degree in IT/IS/CS

Tools

Oracle 12c/19c

Oracle RAC

SQL Server 2016-2022

Azure

AWS

UNIX

Windows OS

Job description

Goldtech Resources Pte Ltd seeks a Senior Database Administrator to join our Managed Services team. You will oversee Oracle and SQL Server databases in a 24x7 enterprise environment, driving performance, security, and reliability across mission-critical systems.

You will lead optimization, hardening, migrations, and automation, collaborating with internal teams and customers to uphold system integrity and ensure business continuity. 5+ years of hands-on experience required.