InTTrust

Technology

CassandraDatabaseAdministrator

€38–55k ~AI est. Athens, Attica, Greece FULL TIME
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Mid+ candidates.

The Brief

“Cassandra Database Administrator at InTTrust. Skills: Cassandra Administration, Performance Optimization, Data Modeling. Install Cassandra clusters. Configure Cassandra clusters”

Industry & Context.

Technology
Problems you'll solve

Troubleshooting

What They're Looking For.

Must Have

Authorized to work in the EU, Proficient in Greek

Nice to Have

Cassandra internals understanding, Backup and restore strategies familiarity

What You'll Do.

Install Cassandra clusters

Configure Cassandra clusters

Manage Cassandra clusters

Add nodes to clusters

Remove nodes from clusters

Manage replication factors

Maintain maximum uptime

Analyze data access patterns

Identify performance bottlenecks

Fine-tune JVM configurations

Fine-tune garbage collection

Fine-tune database configurations

Design partition keys

Write optimal CQL queries

Monitor system health

Resolve production issues

Implement data encryption

Implement access controls

Establish backup strategies

Establish disaster recovery strategies

Forecast hardware requirements

Forecast storage requirements

Forecast compute requirements

Automate operational tasks

Automate cluster provisioning

How You'll Work.

Team & Collaboration

Work with software engineers

Full Job Description

**InTTrust** is a trusted Technology and Digital Solutions provider creating value for customers, encompassing IT Consulting and Implementation services, Database Operation, Administration and Optimization services, IT Managed Services, Cloud Governance & Security services. We are experts on Digital Transformation Solutions, Custom Applications Development & Application Modernization, IoT and ML/AI solutions, Design and Implementation of Private/Public/Hybrid Cloud solutions together with Multi-Cloud Integration. We are seeking to hire a Cassandra DBA to join Data team. The ideal candidates have strong operational leadership, a service-centric mindset **Requirements** **Cluster Management:** Install, configure, and manage Cassandra clusters. Add or remove nodes, manage replication factors, and maintain maximum uptime. **Performance Optimization:** Analyze data access patterns, identify bottlenecks, and fine-tune JVM, garbage collection, and database configurations for scalability. **Data Modeling:** Work with software engineers to design efficient data models, partition keys, and write optimal CQL (Cassandra Query Language) queries **Monitoring & Troubleshooting:** Use monitoring tools like DataStax OpsCenter, Prometheus, and nodetool/dsetool to monitor system health and resolve production issues. **Security & Backups:** Implement data encryption, access controls, and establish backup/disaster recovery strategies **Capacity Planning:** Forecast hardware, storage, and compute requirements based on projected business growth Understanding of Cassandra internals (SSTable,meltable, compaction, repair, gossip protocol, consistent hashing) and familiarity with backup and restore strategies **Automation:** Automate routine operational tasks and cluster provisioning using tools like Bash, Python, or Ansible **The following will be considered as a plus:** Use monitoring tools like DataStax OpsCenter, Prometheus, and nodetool/dsetool to monitor system health and resolve produc

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