3 of 3 Permanent SIEM Jobs in Portsmouth

Permanent Salary: Up to £78,500 (DOE) + Bonus Working arrangement: Hybrid Office Location: Portsmouth As a Senior Security Engineer, you will: Design, deploy, and maintain core SOC technologies (SIEM, EDR, SOAR, threat intelligence, and logging infrastructure). Develop and optimise detection use cases, correlation rules, and analytics content. Build and maintain automation workflows and integrations using automation platforms or … junior engineers and maintain documentation, diagrams, and standards. Required Experience/Skills: 5 years’ experience in a SOC, security engineering, or cyber operations role. Strong hands-on experience with SIEM or EDR platforms (e.g., Microsoft Sentinel, Splunk, Defender, CrowdStrike, Elastic). Expertise in building and tuning detection rules, dashboards, and automation playbooks. Proficiency in scripting or automation (KQL, PowerShell, Python More ❯

Security Engineer who enjoys building, optimising, and automating SOC infrastructure. This role sits within a growing Cyber Defence operation where you’ll help design and maintain the platforms behind SIEM, EDR, SOAR, and threat intelligence tooling, improving detection coverage and enabling analysts to respond faster. Key responsibilities: Engineer and maintain SIEM, EDR, SOAR, and logging platforms. Develop automation and integrations More ❯

to cyber threats across diverse client environments, mentoring junior analysts, improving detection content, and helping drive SOC maturity. What you’ll do: Lead complex investigations and incident response. Develop SIEM/EDR use cases and correlation rules. Perform proactive threat hunting and support automation initiatives. Produce incident reports and guide remediation activities. Help coach and upskill junior analysts. You should … bring: 2–4 years’ experience in a SOC, CSIRT, or cyber defence environment. Solid knowledge of SIEM and EDR platforms (Sentinel, Splunk, Defender, CrowdStrike, etc.). Understanding of MITRE ATT&CK and network/cloud security principles. Strong analytical and communication skills. Bonus points for: Scripting or automation experience (KQL, PowerShell, Python). Background in threat hunting or vulnerability management. More ❯