Senior SOC Analyst (SIEM Focus)

Senior SOC Analyst (DV Cleared)

Contract - 6 Months (up to £750 inside IR35)
​​​​​​​Location: Corsham (3 days onsite)
Sector: Defence & National Security

We are working with a leading organisation in the defence and national security sector who are looking to engage a DV-cleared Senior SOC Analyst to support a critical cyber security programme.

This is a high impact contract where you will play a key role in maintaining and enhancing security operations within a highly secure environment

The Role

You will operate within a live Security Operations environment, supporting both day-to day cyber operations and the continuous improvement of detection capability and SOC tooling.

This is a hands-on role with a strong focus on incident response, SIEM optimisation, and threat detection.

Key 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

What We're Looking For

• Active DV clearance (essential)
• Strong experience in SOC / Cyber Security Operations
• Hands-on experience with SIEM platforms (e.g. Splunk, Sentinel, 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 (e.g. Python, PowerShell, Bash) is beneficial

Why Apply?

• Opportunity to work on a mission-critical defence programme
• Gain exposure to advanced cyber capabilities in secure environments
• Immediate impact role with high visibility and responsibility
• Work alongside experienced teams within a well-established SOC function

If you are a DV-cleared Senior SOC Analyst with strong SIEM and detection experience, and you're looking for your next contract in a secure environment, we'd be keen to speak.

👉 Apply now or get in touch for more details

Claire Thomas - [phone removed]