> Markdown version of [/jobs/ext/3977828-senior-infrastructure-engineer](https://www.wearedevelopers.com/jobs/ext/3977828-senior-infrastructure-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Infrastructure Engineer - **Company:** 83zero Ltd - **Location:** Gloucester, UK - **Experience:** Expert - **Salary:** £55,000.0 - £65,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Microsoft Security Essentials, Windows PowerShell, Microsoft Copilot, Zero Trust Network Access, Microsoft SharePoint, Microsoft InTune - **Published:** October 28, 2026 - **Apply:** https://www.careerboard.com/gb/en/find-jobs-in-United-Kingdom/-5694D81221E3CC6CF6/ ## About the Role Strong Microsoft 365 engineering experience Entra ID/Intune/Endpoint Security expertise Experience in MSP or multi-customer environments Microsoft security tooling experience Comfortable leading conversations with customers ## Description Looking for a genuinely strong Microsoft Modern Workplace & Security Engineer who wants to work across complex customer environments, influence technical direction, and operate as a trusted technical advisor. This is a hands-on senior engineering role with a strong focus on: Microsoft 365 architecture & optimisation Entra ID & Conditional Access Intune & Endpoint Management Microsoft Security stack (Defender/Purview/Sentinel) Zero Trust & secure design principles Tenant remediation & standardisation Copilot, SharePoint & collaboration tooling PowerShell & automation Customer-facing consulting & technical leadership You'll be: Leading complex technical projects & escalations Designing secure Microsoft environments Improving engineering standards & service quality Mentoring engineers & sharing best practice Supporting migrations & modern workplace transformations