Security Engineer

Senior Security Engineer | Managed Security Services | London (Hybrid) We're recruiting on behalf of our client, a specialist managed security provider, who is expanding its Managed Services team and looking for a Senior Security Engineer who loves hands-on work and gets results for customers. Our client runs co-managed and fully managed services across leading ZTNA, SSE, CTEM and CAASM platforms, delivering reduced risk, better visibility and stronger control. You'll be the engineer who makes that happen. What you'll be doing - Deploying and configuring customer security platforms, from design and build through to handover into BAU - Running day-to-day operations across multiple customer environments: health checks, upgrades, policy changes and drift correction - Operating and tuning SSE and Zero Trust capabilities, including SWG, CASB, DLP, ZTNA and RBI - Helping run continuous exposure management programmes aligned to the CTEM cycle, prioritising vulnerabilities on real-world exploitability and business impact, not just severity scores - Using CAASM platforms to give customers a unified view of their assets and spot coverage gaps early - Troubleshooting access failures, DLP events and control issues through to root cause - Presenting findings in customer service reviews and producing clear, actionable reports - Helping build the team's Microsoft security capability, a key growth area for the business What you'll bring - Hands-on experience deploying and operating enterprise security platforms in production - Strong SSE experience across SWG, CASB, DLP, ZTNA and RBI (Netskope experience highly desirable) - Practical vulnerability and/or exposure management experience - A background in enterprise security operations and in managed services or multi-tenant environments - Confidence troubleshooting cloud, identity, device and network access paths - Working knowledge of Zero Trust principles - Excellent communication, with the ability to explain technical concepts to technical and non-technical audiences Nice to have: Netskope certifications (NCCSA/NCCSI), CTEM, BAS or CAASM experience, familiarity with CVSS, EPSS and CISA KEV, Microsoft security certifications (SC-200, SC-300, SC-401, SC-100). If you want a role where good security comes from continuous hygiene, visibility and governance rather than one-off deployments, get in touch. Apply now or message me directly to find out more. Please send your CV for immediate review