Senior Database Systems Engineer

Position Overview

L3 Couchbase DBA

Required Skills & Qualifications

• 5+ years of experience as a Couchbase DBA, with strong exposure to large-scale distributed systems.
• Deep understanding of:
  • Couchbase cluster architecture
  • N1QL Query Engine
  • Indexing (GSI/FTS)
  • Bucket design and memory management
  • Couchbase security modules
• Strong hands-on experience with Linux OS, shell scripting, networking basics, and debugging tools.
• Experience integrating monitoring with

  Prometheus/Grafana/Nagios

  .
• Proven ability to troubleshoot complex production incidents independently (L3 level).
• Excellent communication and documentation abilities.

 Work Timings: Rotational Shifts

1. Installation & Configuration

• Deploy and configure Couchbase clusters on Linux-based servers in both bare-metal and VM environments.
• Set up services such as

  KV, Query, Index, Search, Eventing

  , ensuring optimal resource allocation and cluster efficiency.
• Plan and execute Couchbase patching cycles and version upgrades with minimal downtime.
• Validate cluster health post-upgrade using tools like

  cbstats, cbcollect_info

  , and internal cluster diagnostics.

2. Monitoring & Alerting

• Implement monitoring and alerting for:
  • Node failures
  • Disk watermarks
  • Rebalance operations
  • Index/storage fragmentation
  • Slow-running N1QL queries
• Integrate Couchbase metrics with

  Prometheus, Grafana, Nagios

  , or similar monitoring tools.

3. Troubleshooting & Incident Management

• Diagnose and resolve issues related to:
  • Rebalance failures
  • Index fragmentation
  • XDCR delays/lag
  • Query performance bottlenecks
• Perform in-depth root cause analysis (RCA) and maintain detailed incident reports.
• Create and maintain runbooks for recurring or high-impact issues to streamline operations.

4. Performance Tuning

• Optimize:
  • N1QL queries
  • Index design
  • Bucket settings
  • Memory quotas and Node resource allocation
• Monitor and fine-tune:
  • Compaction processes
  • Thread concurrency
  • Disk I/O performance
  • Latency and throughput across Couchbase services

5. Backup & Disaster Recovery

• Automate backup and restore processes using

  cbbackupmgr

  , ensuring backup integrity and recoverability.
• Regularly validate backups and maintain compliance with retention policies.
• Design, configure, and maintain

  XDCR

  (Cross Data Center Replication) for active-active or active-passive DR setups.
• Conduct routine failover drills and ensure DR readiness.

6. Security & Compliance

• Implement and maintain:
  • RBAC (Role-Based Access Control)
  • TLS/mTLS for encrypted connections
  • Audit logging
  • LDAP/SAML-based authentication/authorization
• Ensure compliance with internal and industry security standards.

7. Documentation & Standards

• Maintain detailed:
  • Runbooks
  • Patching guidelines
  • Operational SOPs
  • Architecture and configuration documentation
• Mentor junior DBAs and promote Couchbase best practices within the team.
• Contribute to continuous improvement of database standards, policies, and operational frameworks.