I am currently supporting a client who is looking to supplement their current 3rd line team with a 3rd line support engineer, mainly to assist with current workload but also share insights of past experiences and support current team with any skills shortage. This is an excellent opportunity for an experienced engineer to play a key role in delivering high-level technical support and gain experience of mentoring/upskilling colleagues.Key Responsibilities: - Provide 3rd line technical support across a variety of technologies including O365/M365, Windows Server environments, and network infrastructure. - Troubleshoot and resolve complex technical issues, escalating when necessary. - Manage and maintain Group Policy, Active Directory, and other Windows-based services. - Perform basic WAN/LAN troubleshooting and support network infrastructure, including routers, switches, and wireless access points. - Support and manage firewall configurations and security best practices. - Work closely with 1st and 2nd line support teams to ensure smooth escalation and resolution of issues. - Participate in system upgrades, patching, and infrastructure improvement projects. - Support junior team members and assist with upskilling colleagues alongside technical service manager.Desirable: - Certifications such as Microsoft (MCSA/MCSE), CompTIA Network+, or relevant firewall vendor certifications (e.g., Cisco, Fortinet, Sophos). - Experience in virtualization technologies (e.g., VMware, Hyper-V) ..... full job details .....