Job Title: Cassandra DBA

Location: Remote

Job Type: Full Time

Note - Candidate needs to work in UK Shift Time.

Ceritfied DataStax

Job Description -

Responsibilities

Lead and support Oracle-to-Apache Cassandra data migration activities, ensuring data integrity, consistency, and minimal disruption to business services.

Own the Cassandra data-layer architecture and design supporting high-volume, real-time payment transaction processing.

Take end-to-end responsibility for keyspace design, data modelling, Cassandra cluster implementation, and performance optimisation.

Work closely with project, infrastructure, security, and application teams to ensure the Cassandra platform satisfies availability, resilience, encryption, and access-control requirements.

Develop comprehensive operational runbooks, support procedures, and technical documentation, and deliver knowledge transfer to internal teams prior to service handover.

Design, deploy, configure, and maintain Apache Cassandra clusters, including replication, keyspace configuration, partitioning, and topology strategies.





Create and optimise Cassandra data models based on application query requirements, including denormalisation, partition-key selection, hotspot prevention, and management of wide partitions.

Perform Cassandra performance tuning, covering compaction configuration, consistency levels, read/write path optimisation, JVM configuration, and garbage-collection tuning.

Manage day-to-day Cassandra operations, including node provisioning, decommissioning, cluster expansion, repairs, backups, restoration, and disaster-recovery activities.

Implement and maintain cluster monitoring and observability, using platforms such as Prometheus, Grafana, OpsCenter, or equivalent monitoring solutions.

Provide technical guidance on CQL development, query optimisation, and recommended application access patterns.

Partner with infrastructure and security teams to implement platform hardening, encryption in transit a

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