Senior NoSQL Database Administrator – Couchbase & Cassandra

Couchbase Administration
· Install, configure, and administer Couchbase clusters across production and non-production environments.
· Design and support high availability and replication using XDCR and inter-cluster replication.
· Create and manage buckets, configure replication policies, and handle data distribution.
· Perform failover and rebalance operations during incidents, upgrades, and capacity expansion.
· Manage user access and security using RBAC.
· Monitor Couchbase environments using Couchbase Web Console, iCinga, Nimsoft, and other monitoring tools.
· Use CLI and REST APIs to manage and troubleshoot Couchbase clusters.
· Coordinate with vendors and internal teams for complex production issues and version upgrades.
· Support Couchbase versions 5.x, 6.x, and 7.x.
Cassandra Administration
· Administer Cassandra clusters in single-datacenter and multi-datacenter setups.
· Manage large-scale Cassandra environments (multi-node, multi-TB clusters).
· Add and decommission nodes while ensuring data consistency and availability.
· Create and manage keyspaces based on application requirements.
· Perform routine and planned maintenance activities including repair, compaction, backup, and restore.
· Work with nodetool, CQL, and SSTable utilities for cluster management and troubleshooting.
· Implement backup strategies aligned with application availability and cost requirements.
· Handle user management and security for Cassandra clusters.
Monitoring, Automation & Support
· Develop and maintain health-check and monitoring shell scripts.
· Monitor production environments using tools such as Splunk, ELK, and infrastructure monitoring tools.
· Provide production support in ITIL-based environments, ensuring SLAs are met.
· Troubleshoot database and performance issues and perform root-cause analysis.
· Participate in on-call rotations, maintenance windows, and emergency support as required.
Required Skills & Qualifications
· 8+ years of experience in NoSQL database administration.
· Strong hands-on experience with Couchbase and Apache Cassandra.
· Proven experience managing large, production-grade NoSQL clusters.
· Solid understanding of high availability, replication, and disaster recovery concepts.
· Experience with Linux/Unix environments.
· Familiarity with monitoring and logging tools (iCinga, Nimsoft, Splunk, ELK).