Senior Operational Security Engineer
Hybrid · London, England, United Kingdom
Job Summary
Senior Operational Security Engineer responsible for owning and operating core protective and detective security controls across endpoint, network, identity and data security domains. Responsibilities include leading EDR tooling, enforcing security baselines, managing anti-malware, configuring firewalls and WAFs, maintaining email and web security controls, administering MFA/SO and PAM/PIM, managing JML processes, implementing DLP and encryption standards, leading threat hunting with XDR telemetry, developing incident response runbooks, ensuring ransomware readiness and business resilience, and producing security metrics and audit-ready documentation. Requires extensive hands-on experience in security operations, SIEM/XDR, IAM, and a track record in a regulated financial services environment preferred but not essential; certifications such as GIAC, CISSP, or similar are desirable.
Required Qualifications
- Degree or equivalent professional experience in a relevant technical discipline
- Significant hands-on experience in an operational information security or security engineering role
- Demonstrable experience managing EDR/AV, SIEM/XDR platforms, and network security controls including firewalls, WAF and segmentation
- Practical experience with identity and access management including MFA, PAM/PIM and access review processes
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