Key Responsibilities
• Review the existing Cassandra data model and recommend improvements for performance, scalability, and availability.
• Design multi-region Cassandra architecture, including replication strategies, consistency levels, failover mechanisms, and capacity planning.
• Define best practices for Java data access using the DataStax Java Driver, including configuration, load balancing, retries, and query patterns.
• Identify and resolve Cassandra performance issues involving hot partitions, large partitions, tombstones, and consistency anomalies.
• Design and guide zero-downtime, no-data-loss migration strategies from relational databases to Cassandra.
• Implement migration approaches such as Change Data Capture (CDC), dual writes, and shadow reads.
• Guide the development of customer-facing migration and data verification tools.
• Define performance testing strategies and benchmarks across multiple regions.
• Establish operational best practices for compaction,



repair, monitoring, backup, and recovery.
• Document architecture decisions and mentor the engineering team through design and code reviews. Required Skills and Qualifications
• 8+ years of hands-on production experience with Apache Cassandra.
• Robust expertise in Cassandra architecture, data modeling, and performance tuning at scale.
• Proven experience designing multi-region Cassandra deployments for high availability and low latency.
• Experience leading RDBMS-to-Cassandra migrations with zero downtime and no data loss.
• Experience integrating Cassandra into applications originally designed for relational databases.
• Deep knowledge of the DataStax Java Driver.
• Ability to work independently, ramp up quickly, and provide technical guidance to engineering teams.

📌 Cassandra Architect (India)
🏢 Persistent Systems
📍 India