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 beneficialWhy 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 number removed)