Overview

I’m currently partnering with a leading international organisation headquartered in London that’s undergoing a major transformation of its security landscape. As part of this growth, they’re looking to appoint a Principal Information Security Engineer to strengthen their enterprise and cloud security posture.

The Role

This is a critical technical leadership position focused on implementing and optimising security controls across complex hybrid environments. You’ll be responsible for driving Zero Trust architecture, network segmentation, and championing secure-by-design practices in collaboration with engineering, cloud, and business teams.

Key Responsibilities

• Lead end-to-end threat assessments and influence secure architecture across enterprise projects
• Deploy and optimise core security tools (EDR, PAM, AV, DNS, DLP, Cloudflare)
• Conduct threat modelling, risk assessments, and proactively hunt for threats
• Collaborate with IT teams to roll out segmentation and extend Zero Trust across environments
• Take ownership of attack surface reduction, including Red Teaming and vulnerability management
• Contribute to compliance efforts across GDPR, NIS, ISO 27001

Essential experience and skills

• Strong hands-on experience across operating systems (Windows & Linux), cloud security (AWS, Azure), and enterprise security tooling
• Practical knowledge of MITRE ATT&CK, TTPs, and Red Team/Blue Team tactics
• Experience in scripting (PowerShell, Python, Bash) and tools like Metasploit, Burp Suite, Rapid7 InsightVM, and Nmap NSE
• Background in telco or highly regulated environments preferred (e.g., familiarity with UK Telecom Security Act)
• Relevant security certifications such as CISSP, CCSP, GCIH or similar are highly desirable

Salary and Location

Salary: Up to £95,000 + bonus + package

Location: London (good work from home options available)

Application

If you are interested in this Principal Information Security Engineer position and meet the above requirements please apply immediately.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Information Technology
• Project Management
• Engineering

Industries

• Telecommunications
• Technology
• Information and Media
• Insurance