L3 SOC Analyst

L3 SOC Analyst 

A Global Organisation requires a Contract L3 SOC Analyst to join their Incident Response team acting as an escalaton point – Splunk & Defender

• Day Rate: £475 – £500pd
• IR35 Status: Inside
• Duration: 6 months initially
• Travel: 2 days a week in Berkshire 

This L3 SOC Analyst will have the previous following experience: 

• Act as a lead investigator for high-severity security incidents, coordinating response activities and containment strategies.
• Perform deep forensic analysis across endpoints, logs, and network traffic to uncover advanced threats.
• Develop and fine-tune detection rules and correlation logic in SIEM platforms (e.g., Splunk).
• Collaborate with engineering and threat intelligence teams to improve detection coverage and SOC workflows.
• Mentor and guide L1/L2 analysts, providing training, quality reviews, and escalation support.
• Design and execute proactive threat hunting campaigns using tools such as Defender, CrowdStrike, and custom scripts.
• Contribute to playbook development, automation improvements (including Microsoft Co-pilot integration), and process optimization.
• Produce executive-level incident reports, root cause analyses, and recommendations for remediation and hardening.