We are seeking an experienced Database Site Reliability Engineer (DBSRE) to support and operate enterprise-scale, mission-critical database platforms across PostgreSQL, MongoDB, MySQL/MariaDB, and Microsoft SQL Server. The ideal candidate will have strong expertise in high availability, performance tuning, disaster recovery. • Install, configure, and manage PostgreSQL (Patroni), MongoDB replica sets, MySQL/MariaDB HA, and MS SQL Server Always On in production environments.• Ensure high availability, replication, and automated failover for mission-critical databases.• Perform database and query performance tuning, indexing optimization, and resource utilization analysis.• Maintain backup and recovery strategies using pgBackRest, PBM, Percona XtraBackup, and SQL Server native tools.• Conduct Disaster Recovery (DR) drills, ensuring RTO/RPO compliance.• Automate database provisioning, configuration, and operations.• Implement and maintain monitoring and alerting using Prometheus, Grafana, and PMM.• Perform database upgrades, migrations, and patching with minimal downtime.• Implement strong security, access controls, encryption, and auditing practices.• Maintain SOPs, technical documentation, architecture diagrams, and operational runbooks.• Participate in 24x7 on-call rotations, resolve incidents, and ensure SLA adherence.