3rd Line Systems Support Engineer

Overview job description:

As a senior technical escalation point, the 3rd Line Engineer delivers advanced support across a wide range of systems, ensuring client environments remain secure, resilient, and high-performing. The role covers deep troubleshooting, major incident ownership, project delivery, and mentoring of 1st/2nd line colleagues.

Main duties and responsibilities:

• Networking:
• Configuring, managing, and troubleshooting firewalls, VLANs, DMZs, and switching.
• Deploying and maintaining wireless networks, including guest/corporate segmentation.
• Using and maintaining network monitoring platforms.
• Applying strong security principles to network architecture.

• Azure/Office 365/Cloud:
• Administering Azure AD/Entra ID and Microsoft 365 services (Exchange Online, Teams, SharePoint, OneDrive, Intune).
• Supporting hybrid AD environments.
• Implementing Azure backup, DR, and storage solutions.
• Configuring and maintaining Azure Virtual Desktop environments.

• Infrastructure & Servers:
• Managing Windows Server environments (AD, DNS, DHCP, GPO).
• Supporting virtualisation platforms (VMware/Hyper-V).
• Delivering server patching activities.
• Configuring and maintaining SAN/NAS storage technologies.

• Endpoint Management:
• Managing devices via Intune, Autopilot, and other MDM/EMM tools.
• Applying and monitoring endpoint security and compliance policies.
• Overseeing device lifecycle management.

• Cybersecurity:
• Supporting email security controls.
• Configuring and maintaining EDR/XDR/AV platforms.
• Applying privileged access management.
• Monitoring logs using SIEM and other tooling.

• Cross-Functional:
• Acting as the 3rd line escalation point for the service desk.
• Conducting detailed troubleshooting and root cause analysis.
• Documenting infrastructure, procedures, and technical solutions.
• Managing vendor relationships.
• Supporting projects, migrations, and upgrades.
• Mentoring Junior Engineers.

Applicants to this role require:

• 5+ years in a similar technical support role (MSP background beneficial).
• Strong networking knowledge (firewalls, VLANs, switching, Wi-Fi).
• Hands-on experience with Azure AD, O365, and hybrid environments.
• Proficient with Windows Server, AD, DNS, DHCP, GPO.
• Experience with VMware/Hyper-V.
• Competent with endpoint management platforms (Intune, Autopilot, MDM/EMM).
• Knowledge of backup/DR, storage, SAN/NAS, Azure storage.
• Solid cybersecurity understanding including EDR/XDR, email security, PAM, SIEM.
• Full UK driving licence.

Desirable:

• Industry certifications (Microsoft, VMware, Cisco, Fortinet, CompTIA Security+).
• PowerShell or automation skills.
• Prior MSP experience.

Soft Skills:

• Strong analytical and root?cause troubleshooting capability.
• Clear, confident communication with users and technical peers.
• High standards of documentation and process discipline.
• Customer-focused mindset.
• Proactive, adaptable, and team-oriented.
• Good at managing vendor/partner relationships.
• Commitment to continuous learning.

TMM Recruitment INDIT