Senior SOC Analyst (SIEM Focus)

Salary: £? – ? per year

Requirements

• Active DV clearance is essential.
• Strong experience in SOC or cyber security operations.
• Hands-on experience with SIEM platforms such as Splunk, Sentinel, or Elastic.
• Ability to develop and tune detection rules and alerts.
• Experience with incident response and threat analysis.
• Knowledge of MITRE ATT&CK, IOCs, and TTPs.
• Familiarity with SOAR tools and automation.
• Scripting experience such as Python, PowerShell, or Bash is beneficial.

Responsibilities

• Monitor, investigate, and respond to security incidents across secure environments.
• Develop and tune SIEM detection rules and correlation logic.
• Support SIEM and SOAR tooling optimisation and automation.
• Integrate and onboard log sources to improve visibility across systems.
• Conduct threat analysis, including TTPs and IOCs.
• Carry out network and host-based forensic investigations.
• Support vulnerability management and reporting activities.
• Work closely with internal stakeholders to ensure effective cyber defence.

Technologies

• Bash
• Support
• Network
• PowerShell
• Python
• Security
• Splunk

More

We are a leading organisation in the defence and national security sector, offering a 6-month contract for a Senior SOC Analyst role in Corsham with 3 days onsite. This is a high-impact, mission-critical cyber security programme inside IR35, with exposure to advanced cyber capabilities in a highly secure environment. You will join an experienced SOC function and have immediate visibility and responsibility in supporting and improving security operations.

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