Recruitment Partner - SOC & Cyber Defence
Level 3 SOC Analyst
Salary: Up to £82,000 + Bonus + Private Healthcare
A leading UK retail organisation is continuing to invest heavily in its cyber security capabilities and is looking to hire an experienced Level 3 SOC Analyst to join a mature and well-established Security Operations function.
This role sits at the sharp end of detection, investigation, and response. You’ll be responsible for handling complex security incidents, improving detection capability, and acting as a technical escalation point for the wider SOC team, while working closely with engineering, threat intelligence, and security leadership.
Key Responsibilities
Act as the final escalation point for complex security alerts and incidents across the enterprise
Lead and coordinate incident response activities , including containment, eradication, and post-incident reviews
Perform advanced threat hunting and proactive investigations using SIEM, EDR, and cloud telemetry
Develop, tune, and optimise detection rules aligned to MITRE ATT&CK
Work extensively with the Microsoft Security stack , including Sentinel, Defender XDR, Entra ID, and M365 Security
Improve SOC processes, playbooks, and response procedures to reduce MTTD and MTTR
Support and mentor Level 1 and Level 2 analysts, raising overall SOC capability
Collaborate with wider security teams (engineering, IAM, cloud, risk) on remediation and security improvements
Provide clear technical reporting and recommendations to both technical and non-technical stakeholders
Required Experience
Proven experience working as a Level 3 / Senior SOC Analyst or equivalent role
Strong hands‑on experience with the Microsoft security ecosystem (Sentinel, Defender, MDE, MDI)
Deep understanding of incident response , attacker TTPs, and kill‑chain methodologies
Experience creating and tuning SIEM detections and alerts
Strong knowledge of Windows environments , Active Directory, Azure, and M365
Experience with threat hunting and forensic investigation techniques
Comfortable working in a hybrid on‑site model (1–3 days per week in London)
Experience in large‑scale or enterprise environments
Exposure to retail, e‑commerce, or high‑volume customer‑facing environments
Scripting or automation experience (PowerShell, KQL, Python)
Relevant certifications such as GCIA, GCED, GCIH, SC‑200, or similar
What’s On Offer
Salary up to £82,000 depending on experience
Annual performance bonus
Hybrid working (London‑based, 1–3 days per week)
Opportunity to work in a high‑impact SOC role within a well‑funded security programme
Clear progression and the chance to influence SOC strategy and detection maturity
Seniority Level
Mid‑Senior level
Employment Type
Full‑time
Job Function
Information Technology
Industries
Computer and Network Security
Referrals increase your chances of interviewing at InfoSec People Ltd by 2x
Senior SOC Analyst in London employer: InfoSec People Ltd
Join a dynamic and growing organisation in the cyber security sector, where you will thrive in a collaborative and supportive team environment. With hybrid working options and structured career development opportunities, this role as a Service Coordinator offers you the chance to take ownership of your responsibilities while being exposed to cutting-edge technologies. Enjoy a competitive salary and benefits package, all while contributing to meaningful operational processes that ensure exceptional customer service.
