Senior Security Engineer | Managed Security Services | London
I’m currently recruiting for a Senior Security Engineer to join a growing Managed Security Services team in London (Hybrid) .
This is a hands‑on opportunity for someone who enjoys working across Security Service Edge (SSE), Zero Trust, exposure management and cyber asset visibility , while working directly with customers to improve their security posture.
What you’ll be doing
- Deploy, configure and operate enterprise security platforms across customer environments
- Manage BAU operations, platform health, upgrades, policy and configuration changes
- Operate and optimise SSE capabilities including SWG, CASB, DLP, ZTNA and RBI
- Support Zero Trust and conditional access initiatives
- Run exposure and vulnerability management programmes aligned to CTEM
- Identify, validate and prioritise vulnerabilities based on real-world exploitability and business impact
- Use CAASM platforms to identify asset visibility and security control gaps
- Troubleshoot complex cloud, identity, device and network access issues
- Produce customer-facing security reports and present findings during service reviews
- Develop runbooks, operational documentation and contribute to continuous service improvement
- Help develop the organisation’s growing Microsoft Security capability
What we’re looking for
- Strong hands‑on experience with enterprise security platforms
- Excellent SSE experience across SWG, CASB, DLP, ZTNA and RBI
- Netskope experience is highly desirable
- Experience across vulnerability and/or exposure management
- Strong enterprise security operations background
- Experience within managed security services or multi‑tenant environments
- Good understanding of Zero Trust and identity‑based access control
- Strong troubleshooting and customer‑facing communication skills
Nice to have
- Netskope certifications such as NCCSA / NCCSI
- CTEM, CAASM or breach and attack simulation experience
- Knowledge of CVSS, EPSS and CISA KEV
- Microsoft security certifications such as SC-200, SC-300, SC-401 or SC-100
- Experience presenting security posture findings to customers
London – Hybrid
Full-time | Managed Security Services
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Security Engineer employer: Harrington Starr
Join a dynamic and innovative capital markets technology business in London, where your contributions as a Junior Account Manager will directly impact client success and company growth. With a strong emphasis on employee development, a collaborative work culture, and competitive benefits, this role offers you the chance to thrive in a fast-paced environment while building meaningful relationships with clients and colleagues alike. Experience the unique advantage of working in a scaling firm backed by a leading growth investor, providing ample opportunities for professional growth and advancement.
