QUANTUM INFOTECH SOLUTIONS PTE. LTD. Hiring! Full Time Senior Database Administrator in Islandwide (Singapore), Earn up to SGD 9,000 - Ricebowl

About the Role

We are looking for a Senior Database Administrator to manage and support mission-critical database environments.

You’ll own HA/DR, performance, security, and automation across SQL Server, Oracle, PostgreSQL, MySQL, MongoDB, and AWS RDS.

Key Responsibilities

Database Administration & Operations

•  Manage enterprise Microsoft SQL Server, PostgreSQL, MySQL, Oracle, and MongoDB databases supporting transport systems and banking applications
• Perform database installation, configuration, patching, upgrades, and production deployments
• Support 24x7 production operations and SLA-driven incident management
• High Availability & Disaster Recovery
•  Administer SQL Server Always On Availability Groups, FailoverClustering, Log Shipping, Database Mirroring
• Implement and test HA/DR solutions including Oracle replicationtechnologies
• Develop backup/recovery strategies, perform DR drills, validate businesscontinuity procedures
• Performance & Monitoring  Monitor database health, storagegrowth, performance bottlenecks, and system availability
• Troubleshoot database incidents, connectivity issues, andapplication-related performance problems
• Perform query optimization, execution plan analysis, and capacityplanning
• Security & Compliance  Implement database security hardening,access management, auditing, and compliance controls
• Support vulnerability remediation and infrastructure modernizationactivities
• Automation & Cloud  Automate database maintenance andmonitoring using PowerShell, Shell scripting, and T-SQL
• Support AWS RDS administration, monitoring, and backup management
• Coordinate with infrastructure, middleware, and application teams for releases/deployments

Required Skills & Experience

• 12+ years as DBA managing SQL Server, Oracle, PostgreSQL in production
• Hands-on with Always On AG, Failover Clustering, Log Shipping, Oracle Data Guard/Replication
• Strong backup/recovery, DR testing, and business continuity experience
• Performance tuning, query optimization, execution plan analysis Scripting: PowerShell, Shell, T-SQL for automation AWS RDS administration and monitoring24x7 on-call support experience with strict SLAs
• Knowledge of database security, auditing, compliance controls

Good to Have

• Experience in banking/financial services environment
• MongoDB administration
• Infrastructure modernization and patch/vulnerability management