DBA database administrator (MSSQL & MongoDB)

We are looking for an experienced Database Administrator to support mission-critical production systems in a secure 24/7 environment. You will be responsible for the availability, performance, security, and reliability of Microsoft SQL Server and MongoDB platforms, working closely with infrastructure, system, software, and security teams. Key Responsibilities • Provide Day 2 (L2/L3) production support for MSSQL and MongoDB, including incident response and root cause analysis. • Manage high availability environments including SQL Server Always On and MongoDB Replica Sets. • Perform database administration, backup & recovery, patching, upgrades, and disaster recovery testing. • Monitor and optimize database performance through tuning, indexing, and capacity planning. • Support application deployments, database releases, data migrations, and post-deployment validation. • Implement database security, access controls, auditing, and vulnerability remediation. • Maintain operational documentation, SOPs, and support compliance with government security standards. • Participate in 24/7 on-call support for critical production incidents. Requirements • 5–8+ years of hands-on DBA experience supporting enterprise production environments. • Strong expertise in Microsoft SQL Server (Always On, HA, performance tuning) and MongoDB (Replica Sets, backup/recovery). • Experience supporting 24/7 mission-critical systems and Severity 1 incidents. • Knowledge of database deployment, data patching, and release management. • Strong troubleshooting, analytical, and problem-solving skills. • Familiarity with ITIL operations, virtualization/container environments, or integration platforms is an advantage. • Experience in Singapore Government or other regulated environments is highly preferred.