Flint is looking for a Cyber Security Specialist to join one of our clients in Birmingham on a contract bases. Please note this role is Inside IR35. Accountabilities Design, implement, and optimize SIEM solutions using Elasticsearch and the Elastic Stack. Develop and tune detection rules, alerts, and dashboards for effective threat detection. Write and optimize Elasticsearch queries; monitor and improve SIEM performance. Collaborate with security operations, incident response teams, and stakeholders to deliver security objectives. Contribute to security engineering projects, transformations, and best practices. Produce clear documentation and presentations for technical and business audiences. Essential Skills Strong experience with Elastic Security, including access control, authentication, encryption, and compliance. Detection rule development aligned to the MITRE ATTandamp;CK framework. Performance tuning of Elasticsearch indices, mappings, and Logstash pipelines. Advanced use of Kibana for dashboards, visualization, and system monitoring. Advantageous Hands-on SIEM implementation with the Elastic Stack (ELK). Knowledge of offensive security testing frameworks. Experience with cloud platforms, OpenStack, and Kubernetes. Familiarity with DevOps tools and practices (Git, Terraform, Ansible). Strong understanding of security policies and regulatory frameworks. Cybersecurity certifications and 3-5 years'' experience in cybersecurity engineer