Senior System Engineer

Senior Systems Engineer

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Legal 500 was founded by John Pritchard in 1987 as the original clients’ guide to law firms, the first of its kind. It is now a data‑driven, AI‑optimised research platform which benchmarks, informs and connects providers and users of legal services in over 100 countries worldwide.

Our research and data are trusted and relied upon by corporate clients globally as an essential part of the process, both of instructing law firms with new mandates, and when reviewing existing mandates or panels.

We exist to empower both buyers and sellers in the international legal marketplace to make better decisions and have improved outcomes for their organisations. This is achieved by leveraging a trusted, comprehensive research process with a unique, vast, proprietary and constantly updated set of client‑supplied data, unrivalled in the market.

About the Role

We’re looking for a Senior Systems Engineer to take ownership of our modern cloud environment and lead key infrastructure projects. This is a hands‑on technical role where you’ll design and deliver practical solutions across Microsoft 365, Azure/Entra ID, and core infrastructure, while helping us retire legacy systems. You’ll act as a role model for junior engineers and play a pivotal part in shaping our technology roadmap.

What You’ll Do

• Lead administration and optimisation of Microsoft 365, Entra ID/Azure AD, Conditional Access, PIM, Intune, Autopilot and other cloud services.
• Drive infrastructure modernisation, including retirement of legacy AD, SMB and virtualisation workloads.
• Act as the senior escalation point for complex incidents, providing structured troubleshooting and root‑cause analysis.
• Own delivery of technical projects end‑to‑end, including identity uplift, passwordless rollout, security improvements, automation and SaaS integrations.
• Produce and maintain technical standards, architecture notes, runbooks and post‑incident reviews.
• Mentor junior engineers and collaborate across teams to ensure solutions are secure, scalable and aligned to business needs.

What We’re Looking For

• Strong experience with Microsoft 365 and Azure/Entra ID administration.
• Solid understanding of identity, access governance and security controls.
• Proven ability to deliver technical projects end‑to‑end.
• Skilled in Intune, Autopilot and modern device management.
• Good networking fundamentals (routing, VPN, Wi‑Fi).
• Competent in PowerShell scripting for automation and tooling.
• Clear communicator with a calm, methodical approach to problem‑solving.

Location: London or Leeds

Hybrid working – 3 to 4 days a week – expectation will be for the first month to be in office

Seniority level

• Mid‑Senior level

Employment type

• Full‑time

Job function

• Information Technology
• Research Services