Senior Security Analyst

Senior Security Analyst

Are you a highly skilled Security Analyst looking to make a real impact in protecting healthcare systems at a national level? Do you thrive in environments where you can lead technical improvements, optimise security tooling, and influence how organisations detect and respond to threats? If so, we’d love to hear from you.

The Security Operations team sits at the heart of our organisation, protecting nationally critical healthcare systems that support frontline patient care across the UK. Operating within a highly regulated environment, the team delivers a wide range of services including SOC oversight, vulnerability management, attack surface monitoring, and real-time threat detection across enterprise, cloud, and network environments. Our work directly impacts system resilience, patient safety, and the ability to securely deliver healthcare services at scale.

This is an exciting opportunity to join our Security Operations team as a Senior Security Analyst, where you will take ownership of security tooling and detection capability across the organisation. You will work closely with SOC, Security Engineering, and wider technology teams to ensure threats are effectively detected, analysed, and mitigated. This role plays a key part in improving detection quality, reducing risk exposure, and maintaining strong security governance.

Operating at a senior technical level, you will influence tooling strategy, detection standards, and operational best practices.

• Own and manage key security platforms (SIEM, EDR, NDR, SASE), ensuring they are optimised, governed, and effective
• Design, tune, and improve detection rules to enhance alert quality and reduce false positives
• Act as a technical partner to SOC teams, supporting incident detection and response improvements
• Maintain detection coverage using frameworks such as MITRE ATT&CK and support threat modelling activities
• Drive continuous improvement through tooling optimisation, automation, reporting, and governance

You are an experienced and technically strong security professional who enjoys solving complex problems and improving security capability. You combine hands‑on expertise with a structured, analytical approach and take ownership of outcomes. You thrive in collaborative environments, working across teams to influence change, while maintaining a strong focus on risk reduction and operational excellence.

• Proven experience in Security Operations, Detection Engineering, or Security Tooling roles (typically 5+ years)
• Strong hands‑on experience with SIEM, EDR, NDR, or similar security platforms
• Experience building and tuning detections, improving alert quality, and working closely with SOC teams
• Understanding of security frameworks, threat modelling, and detection approaches (e.g. MITRE ATT&CK)
• Relevant certifications (e.g. CySA+, SC-200, GIAC, or vendor certifications) are desirable

At EMIS / Optum UK, we are a leader in healthcare technology, supporting professionals across primary care, community services, pharmacy, and beyond. Our technology enables better, faster, and more efficient patient care across the UK. If this sounds like the right next step for you, we’d love to hear from you. Apply today and be part of a team protecting systems that truly make a difference.