X Security Analyst

Job .

Location:

LRQA Nettitude, Birmingham. Position Category:
Information Technology. Position Type:
Employee Regular.

The purpose of this role is to lead a team of SOC analysts operating on a 24/7/365 basis. This role reports to the SOC Team Lead. As the SOC Senior Analyst, you will be accountable for the effective delivery of your tasks, ensuring expected performance standards while continuously developing your skills as part of a high-trust, high-performing security service.

You will leverage your experience in security operations to enable the smooth delivery of our award-winning defensive monitoring service, supporting proactive detection and response for clients across the globe.

You will be expected to work hands on technically, including deep dive investigations, incident response escalations, threat hunting, tuning detections, delivering technical training, and driving process and capability improvements.

Strong technical knowledge is essential to mentor junior analysts, develop their capabilities, and ensure the team remains at the forefront of security operations.

As part of your role, you will effectively manage, motivate, and develop SOC analysts to ensure high performance, engagement, and continuous professional growth across all shifts.

As a SOC Senior Analyst, you must proactively initiate actions and work independently to quickly mitigate threats, set an example, maintain operational continuity, make informed decisions, and ensure team efficiency under pressure.

As Senior Analyst, you will be working closely with Threat Intelligence, Engineering and Incident Response teams. This collaboration strengthens the SOC’s ability to detect, investigate, and respond to emerging threats. It ensures timely sharing of actionable intelligence, refinement of detection rules, improvement of security tools, and alignment of operational processes, ultimately enhancing overall organizational security posture.

This role drives continuous improvement within the SOC by identifying gaps in processes, detection capabilities, and team performance, and implementing solutions to enhance operational efficiency.

The Senior Analyst must work to refine triage and response workflows, ensuring that lessons learned are incorporated into updated playbooks and best practices.

• Lead day-to-day activities of the Senior SOC analysts across all shifts.
• Ensure all alarms/cases are reviewed and responded to within SLA by the team.
• Act as the first point of escalation for security events.
• Maintain and keep documentation up to date, including design specifications, diagrams and documentation for users.
• Complete all Halo Case files on time and with accurate and timely data/results.
• Aim to ensure high-quality incident triage and investigation following predefined and agreed SOC processes.

• Key Performance Indicators (KPIs) are goals that must be achieved to demonstrate satisfactory or above performance for this job role.
• KPIs will be monitored on an ongoing basis throughout each year and will be explored in further depth as part of the performance management process.
• Service KPIs/SLAs and deliverables are tracked, adhered to and deviations remediated through root cause analysis and non-conformance.

• The analyst continuously monitors security alerts and logs across all customer environments using SIEM, EDR and other security and monitoring tools used by LRQA/Nettitude SOC Team.

• Review real‑time alerts and telemetry to identify suspicious activity or breaches.
• Analyse logs, network flows and endpoint data to validate alerts and understand threat context.
• Maintain and tune SIEM/SOAR correlation rules and endpoint detection signatures to reduce false positives and improve coverage.
• Triage and investigate unusual events to confirm incidents or dismiss benign anomalies.

• Proactively search for hidden threats and improve detection.
• Lead hypothesis‑driven threat hunts across multiple client networks using telemetry, threat intelligence and the MITRE…