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Cassandra DBA Jr
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Location
In office (Bengaluru)
Seniority
Junior
Confirmed on the employer's own hiring board on Oct 26, 2026. First seen by Alion on Oct 22, 2026. Zensar Technologies scores A on the Alion truth index.
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Zensar Technologies is an Indian technology services company founded in 1991 and part of the RPG Group, providing digital engineering, application services and infrastructure management to clients in banking, insurance, retail, manufacturing and healthcare. Its work covers experience design, cloud and data engineering, application development and maintenance, and increasingly applied artificial intelligence, delivered from centres in India, South Africa, Europe and the United States. Headquartered in Pune and listed in India, it earns a large share of revenue from North America and has been repositioning toward higher-value engineering work.
Cassandra Performance Tuning
- Analyze and optimize read/write performance and latency.
- Tune compaction, caching, consistency levels, tombstones, SSTables, and Cassandra configuration.
- Identify hot partitions, slow queries, and resource bottlenecks.
Node Expansion & Cluster Management
- Add, replace, remove, and decommission Cassandra nodes safely.
- Perform cluster expansion and capacity upgrades with minimal production impact.
- Manage token distribution, bootstrap/streaming, repair, cleanup, and cluster rebalancing.
Backup & Recovery
- Implement and maintain Cassandra backup and restore strategies.
- Perform snapshots, incremental backups, and point-in-time recovery where supported by the backup solution.
- Conduct recovery testing and support disaster-recovery procedures.
JVM & System Tuning
- Tune Cassandra JVM heap, garbage collection, and memory settings.
- Troubleshoot GC pauses, heap pressure, CPU, disk I/O, and memory issues.
- Tune Linux/OS and storage configurations for Cassandra workloads.
Monitoring & Troubleshooting
- Monitor cluster health, availability, latency, throughput, disk usage, compactions, dropped messages, GC, and repairs.
- Troubleshoot production issues including node failures, high latency, timeouts, replica inconsistencies, and capacity problems.
- Strong experience with nodetool, Cassandra logs, metrics, tracing, and monitoring/alerting platforms.
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