Database Administrator (MSSQL, MongoDB)

Database Administrator (MSSQL, MongoDB)

Location:Ang Mo Kio, Singapore

ExperienceRequired: 5+ years

We are seeking a hands-on Operations DBA to support amission-critical system operating in a secure environment. This role focusesprimarily on Production (Day 2) stability, high availability, incidentresponse, performance tuning, and disaster recovery readiness for Microsoft SQLServer and MongoDB platforms supporting 24/7 operations.

KeyResponsibilities

• Provide L2/L3 support for MSSQL and MongoDB inProduction and DR environments; participate in standby/on-call roster forcritical incidents

• Troubleshoot and resolve database outages, Always Onfailover issues, blocking/deadlocks, performance bottlenecks, and storage/IOPSconstraints

• Perform root cause analysis and implement preventivemeasures

• Manage MSSQL Always On Availability Groups; monitorreplication/failover health; perform patching and cumulative updates; maintainbackup/restore strategy; conduct DR drills; optimize indexing and executionplans

• Manage MongoDB Replica Sets and automatic failover;monitor memory, disk, and index performance; manage backup/restore and recoveryvalidation; maintain cluster health and sharding

• Conduct proactive health checks, analyze queryexecution plans and slow queries, perform tuning and optimization, and forecastcapacity growth

• Review database scripts prior to production deployment;support data migration and release windows; validate stability post-deployment;ensure rollback/recovery procedures are in place

• Implement database security hardening, managerole-based access control and auditing/logging, support vulnerabilityassessment remediation, and ensure compliance with government security policies

Requirements

• 5-8+ years of DBA experience

• Strong hands-on experience with Microsoft SQL Server(Always On, HA, performance tuning) and MongoDB (Replica Sets, Backup/Restore)

• Experience supporting 24/7 mission-critical systems andhandling Severity 1 production incidents

• Experience supporting application deployment (datapatching, data seeding, etc.)

• Strong troubleshooting and analytical skills

• Preferred: experience in Singapore Government projects;familiarity with virtualized/containerized environments, microservicesarchitecture, and integration-heavy systems (Kafka, REST APIs, ETL); experiencein ITIL-based incident management environments

• Calm and decisive during major incidents; strongcommunication skills during incident bridge calls; comfortable working inaudit-heavy, compliance-driven environments

• Must be eligible for Government security clearance

Eligibility

Due to government securityclearance requirements for this role, only Singapore Citizens are eligible toapply.