• Administer, operate, and optimize production databases including Couchbase, PostgreSQL, DynamoDB, DocumentDB, Cosmos DB, and Snowflake. • Manage Couchbase clusters, including XDCR replication configuration, monitoring, and troubleshooting. • Perform database installations, upgrades, patching, and configuration management across cloud and on-prem environments. • Monitor database health, performance, and resource utilization across multi-cloud infrastructure. • Optimize query performance through indexing strategies, query tuning, and execution plan analysis. • Plan and manage database scaling strategies, including vertical and horizontal scaling, sharding, and capacity planning. • Implement and manage database security controls, including access management, encryption, and compliance requirements. • Design and maintain comprehensive backup strategies with appropriate retention policies. • Implement and validate restore procedures to meet defined RTO/RPO objectives. • Develop and maintain point-in-time recovery (PITR) capabilities. • Execute disaster recovery drills and document outcomes and improvements. • Participate in a 24/7 on-call rotation supporting mission-critical database systems. • Lead database-related incident response efforts, including outage resolution and performance degradation. • Perform root cause analysis and implement corrective and preventative actions. • Troubleshoot complex production issues such as replication lag, memory pressure, connection limits, and deadlocks. • Coordinate closely with application and infrastructure teams during critical incidents. • Implement and maintain monitoring and alerting using tools such as Datadog, CloudWatch, Azure Monitor, and database-native solutions. • Create and manage dashboards for database KPIs and SLAs. • Configure intelligent alerting with appropriate thresholds and escalation paths. • Automate routine operational tasks using Python, Bash, PowerShell, AWS CLI, and cloud-native tooling. • Lead and support database migration initiatives across cloud providers and platforms. • Plan and execute database upgrades and migrations with minimal downtime. • Support new database implementations and data architecture initiatives. • Validate data integrity and reconciliation during migrations. • Develop and maintain runbooks, SOPs, and Architecture Decision Records (ADRs). • Document database configurations, schemas, and topology. • Implement database security best practices including IAM roles, network isolation, secrets management, and encryption. • Manage credentials using AWS Secrets Manager and Azure Key Vault. • Ensure compliance with data residency, privacy, and regulatory requirements. • Participate in security audits, vulnerability assessments, and remediation efforts. • Partner closely with Data Engineering, DevOps, and application teams. • Provide database expertise and guidance across engineering teams. • Communicate database status, incidents, and maintenance activities to stakeholders. • Mentor junior DBAs and engineers on database best practices.