Lead Security Engineer

Barclay Simpson; City of Westminster; Hybrid; GBP 72,000 - 88,000; Full time

Job summary

Barclay Simpson is seeking a Lead Security Engineer in London with a broad security engineering remit across identity and access, Zero Trust, cloud security, vulnerability management and SIEM. The role emphasizes improving SSO, joiner/mover/leaver processes and reducing VPN reliance while collaborating with IT and engineering teams.

The position is hybrid (2-3 days in central London) with a base salary up to £80,000 plus bonus and benefits, and there is no visa sponsorship available.

Qualifications

• Experience across Entra ID, AWS/GCP, SIEM, vulnerability management.
• Hands-on security engineering in a Microsoft environment.
• Ability to work with IT, Engineering and senior stakeholders in a hybrid London setting.

Responsibilities

• Take ownership of security engineering projects end to end.
• Improve SSO and access management and joiner/mover/leaver processes.
• Collaborate with IT, Engineering and senior stakeholders to automate security controls.

Skills

Security engineering

Identity & access management

Zero Trust

Cloud security

Vulnerability management

SIEM and detection

Application security

Automation

SSO

Access management

Tools

Entra ID

AWS

GCP

SIEM tools

Job description

Growing commerce company seeks a Lead Security Engineer to join a small, high-trust security function to take ownership of meaningful security engineering projects from end to end.

This is a broad generalist security engineering role in a Microsoft environment. You'll work across identity and access, Zero Trust, cloud security, vulnerability management, SIEM/detection and application security, with an early focus on improving SSO and access management, strengthening joiner/mover/leaver processes, reducing reliance on traditional VPN access and improving visibility across the application estate.

We're looking for someone who enjoys building and improving security controls, automating manual processes and working closely with IT, Engineering and senior stakeholders. Experience across areas such as Entra ID, AWS/GCP, SIEM, vulnerability management, Zero Trust or security automation would be particularly relevant.

A great opportunity for a strong Security Engineer ready to take broader technical ownership, or an existing Lead who still wants to remain hands-on.

Hybrid (2-3 days in central London), up to £80,000 base + bonus + bens.

There is no visa sponsorship available unfortunately.