Cassandra Administrator

Who we are

DigiCert is a global leader in intelligent trust. We protect the digital world by ensuring the security, privacy, and authenticity of every interaction. Our AI-powered DigiCert ONE platform unifies PKI, DNS, and certificate lifecycle management, to secure infrastructure, software, devices, messages, AI content and agents. Learn why more than 100,000 organizations, including 90% of the Fortune 500, choose DigiCert to stop today’s threats and prepare for a quantum-safe future at www.digicert.com

Job summary

The Apache Cassandra Administrator will collaborate with a global team of database engineers to design, automate, build, operate, and continuously enhance distributed Cassandra services supporting customer-facing SaaS platforms. Responsibilities include building highly available, scalable, and secure database solutions with strong focus on performance, resilience, monitoring, and disaster recovery in large-scale distributed environments.

What you will do

• Design, deploy, and manage Apache Cassandra clusters across multi-datacenter environments.


• Build highly available, fault-tolerant distributed database architectures.


• Perform capacity planning, scaling, and performance tuning for Cassandra workloads.


• Implement replication strategies, consistency levels, and data distribution models.


• Optimize Cassandra data models using query-driven design principles.


• Monitor cluster health using tools such as Prometheus, Grafana, or Splunk.


• Troubleshoot node failures, latency, compaction, and data consistency issues.


• Develop automation using Terraform, Salt Stack, Ansible, or similar tools.


• Support migrations from legacy databases to Cassandra-based solutions.


• Collaborate with engineering teams on schema design and workload optimization.


• Provide on-call support and participate in rotating shifts as needed.

What you will have

• 3+ years administering Apache Cassandra in production environments.


• Strong understanding of distributed systems concepts (replication, partitioning, consistency).


• Experience with Cassandra architecture, internals, and data modeling.


• Expertise in performance tuning (compaction, JVM, GC tuning).


• Experience managing multi-node, multi-datacenter clusters.


• Strong Linux systems administration knowledge.


• Cloud platform experience (AWS, Azure, or GCP).


• Strong troubleshooting and incident response skills.

Nice to have

• Experience with DataStax Enterprise (DSE) or Astra DB.


• Kubernetes-based Cassandra deployments (K8ssandra, Cass Operator).


• Experience with CI/CD tools such as GitLab or Jenkins.


• Familiarity with additional databases (MariaDB, SQL Server, PostgreSQL).

Benefits

• Generous time off policies.


• Top shelf benefits.


• Education, wellness and lifestyle support.

To protect candidate information and maintain a secure hiring process, all applications must be submitted through our careers portal. Resumes or CVs sent directly via email will not be reviewed or considered.

LI-SS1