> Markdown version of [/jobs/ext/3721242-3rd-line-infrastructure-engineer](https://www.wearedevelopers.com/jobs/ext/3721242-3rd-line-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). --- # 3rd Line Infrastructure Engineer - **Company:** Lucid Support Services Ltd - **Location:** Sittingbourne, UK - **Contract:** Temporary contract - **Skills:** Active Directory, Microsoft Azure, Cloud Computing, Dynamic Host Configuration Protocol, Domain Name System (DNS), Hyper-V, Virtual Private Networks (VPN), Microsoft Software, Windows Servers, Cloud Services, TCP/IP, Virtual Local Area Networks, Computer Network Technologies, Software Troubleshooting, Fortinet, Cloud Migration, Cisco, Vmware - **Published:** October 14, 2026 - **Apply:** https://www.careerboard.com/gb/en/find-jobs-in-United-Kingdom/-07A635AED722F53DD8/ ## About the Role * Proven experience operating as a 3rd Line Engineer, Senior Infrastructure Engineer or Professional Services Engineer * Strong Microsoft experience including M365, Entra ID, Azure administration, deployment and troubleshooting experience * Windows Server and on-premises Active Directory expertise * Strong knowledge of DNS, DHCP and Group Policy * Experience supporting hybrid Microsoft environments * Experience delivering infrastructure migrations, cloud adoption initiatives and technology refresh projects * Ability to take ownership of technical workstreams from design through to implementation and handover * Client-facing experience, with the ability to engage confidently with both technical and non-technical stakeholders * Strong troubleshooting and root cause analysis skills across infrastructure, cloud and networking technologies * Experience working across multiple customer environments within an MSP or Professional Services setting * Good networking knowledge, including TCP/IP, VLANs, VPNs, routing and switching fundamentals * Experience with Cisco Meraki and/or Fortinet technologies would be advantageous * Experience with Virtulisation project including VMware or Hyper-V would be beneficial * Relevant Microsoft, Azure, Cisco, VMware or Fortinet certifications are desirable * Ability to produce clear technical documentation and implementation plans * Comfortable balancing project delivery with occasional senior-level support and escalation activities ## Description We are currently recruiting for an experienced 3rd Line Infrastructure & Managed Services Engineer on an initial 3-month contract. This is a hands-on, client-facing role combining advanced infrastructure support, project delivery and cloud technologies. The successful candidate will be contributing to infrastructure migrations, cloud deployments and technology refresh projects across a range of professional and regulated environments. The role is heavily Microsoft focused, with approximately 70% Infrastructure & Systems and 30% Networking, making it an excellent opportunity for a well-rounded engineer with strong Azure, Windows Server and Active Directory expertise alongside Cisco Meraki and Fortinet networking experience.