Role: Cyber Security Analyst (SOC Analyst)Location: Corsham - 100% on-siteDay Rate: Up to £640Contract Length: Until 26th April 2027, with potential for extensionIR35: In scopeWhy this could interest youRare chance to work in a high-impact, mission-critical Defence environment.Long-term stability to 2027, with possibility of extension depending on funding.Tier 2/3 level work - genuinely complex incidents, not just first-line alert handling.Key responsibilitiesTier 2/3 SOC analysis in an enterprise environment.Perform triage of security events - determine scope, priority and impact, and recommend rapid remediation actions.Conduct real-time management of security incidents from detection through to resolution.Work with SIEM technologies and SIEM engineering, including tool configuration (e.g. ArcSight).Create and maintain use cases, analytics and playbooks.Contribute to security monitoring across on-prem and cloud technologies.Shift pattern and working conditions13-hour shifts - days and nights, including some weekends.4 on 5 off, then 5 on 4 off - averaging a standard 37-hour week.Fully on-site in Corsham.Essential requirementsStrongly preffeed to have Active DV Clearance (Developed Vetting) and eligibility for Sensitive Post Check.Industry-standard SOC security qualifications (e.g. SANS, ISC2).Proven Tier 2/3 SOC Analyst experience (2+ years).Hands-on experience with SIEM technologies and engineering (ideally including ArcSight).Experience creating SOC use cases, analytics an