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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # 3rd line Support Engineer - **Company:** Wanstor Ltd - **Location:** London, UK - **Experience:** Expert - **Salary:** £40,660.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Microsoft Antivirus, Microsoft Azure, Microsoft Online Services, Virtual Private Networks (VPN), Microsoft Software, Windows Servers, Networking Basics, Windows PowerShell, Microsoft SharePoint, Virtualization Technology, Wide Area Networks, Software Troubleshooting, Firewalls (Computer Science), Microsoft InTune, Routing & Switching - **Published:** August 22, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5851153887 ## About the Role * Strong hands-on 3rd-line support experience, ideally within an MSP or multi-customer environment. * Strong experience across core Microsoft technologies including Microsoft 365, Windows Server, Active Directory and Entra ID. * Good experience supporting Azure and hybrid Microsoft environments. * Experience with technologies such as Exchange Online, Intune, SharePoint Online and Microsoft Defender. * Strong troubleshooting and diagnostic skills with the ability to investigate complex technical problems and perform root-cause analysis. * Good infrastructure knowledge including virtualisation, backup and disaster recovery. * Good understanding of networking fundamentals including LAN/WAN, VPNs, firewalls, switching and routing. * Some experience using PowerShell or other scripting/automation technologies would be beneficial. * The confidence to take ownership of difficult technical issues and work directly with customers through to resolution. * Strong communication skills and the ability to explain technical issues clearly to both technical and non-technical stakeholders. * A collaborative approach with an interest in sharing knowledge and supporting the development of other engineers. * Exposure to technical projects, migrations or significant customer changes would be advantageous. * Relevant Microsoft or industry certifications would be beneficial. ## Description The 3rd line Support Engineer (internal title Senior Technical Consultant) is a senior technical role within Wanstor's Service Management team, providing advanced 3rd-line support and acting as an escalation point for complex technical issues across our customer environments. You'll take ownership of issues requiring deeper investigation and technical expertise, working across Microsoft 365, Azure, Windows Server and wider infrastructure technologies to identify root causes and deliver effective resolutions. This isn't purely a reactive support role. You'll look beyond individual tickets to identify recurring problems, recommend technical improvements and help improve the security, resilience and performance of customer environments. You'll also provide technical input into customer projects and changes, while sharing knowledge and supporting the development of engineers across the wider Service Management team. * Act as a senior escalation point for complex 3rd-line incidents and technical problems, taking ownership through to resolution. * Troubleshoot across Microsoft 365, Azure, Windows Server, Active Directory and hybrid customer environments. * Investigate recurring and long-standing technical issues, identifying root causes and implementing permanent fixes wherever possible. * Work directly with customers during complex technical investigations, providing clear communication and technical guidance. * Identify opportunities to improve the security, reliability, performance and supportability of customer environments. * Carry out proactive technical reviews and recommend practical improvements based on your findings. * Use PowerShell and automation where appropriate to improve efficiency and reduce repetitive manual activity. * Support technical changes and customer projects where additional 3rd-line expertise is required. * Work collaboratively with Projects, Security and other technical teams to resolve issues and ensure successful transition into BAU support. * Provide guidance to 1st and 2nd line engineers, helping them develop their troubleshooting and technical capability. * Create and maintain technical documentation and knowledge articles, helping appropriate activities and fixes move down through the support teams. * Contribute to problem management and continual service improvement across Service Management. ## Related Videos - [Developer Tools for Microsoft Azure](https://www.wearedevelopers.com/videos/450-developer-tools-for-microsoft-azure) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [This Is Not Your Father's .NET](https://www.wearedevelopers.com/videos/967-this-is-not-your-father-s-net) - [Develop enterprise-ready applications for Microsoft Teams with Azure resources on modern web technologies](https://www.wearedevelopers.com/videos/187-develop-enterprise-ready-applications-for-microsoft-teams-with-azure-resources-on-modern-web-technologies) - [What’s New with Windows Power-User Tools](https://www.wearedevelopers.com/videos/2069-what-s-new-with-windows-power-user-tools) - [Introducing Digital Samba Embedded Video Conferencing API MCP Server](https://www.wearedevelopers.com/videos/1640-introducing-digital-samba-embedded-video-conferencing-api-mcp-server) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)