3rd Line Support Engineer

3rd Line Support Engineer Salary: £35,000 – £45,000 per annum Location: Oxford Our client is a well-established Managed Service Provider (MSP) looking for an experienced 3rd Line Support Engineer to join their team in Oxford. This is a client-facing role resolving technical issues, supporting client infrastructure, and contributing to changes within a structured MSP environment. The Role * Support and maintain the systems * Act as the go-to escalation point for 1st and 2nd line colleagues * Own complex and priority tickets end to end * Get to the root cause of issues rather than just patching symptoms * Maintain high first-time fix rates * Carry out ongoing infrastructure maintenance and patching * Handle the technical delivery of changes such as migrations, upgrades, and new implementations, * Coordinate with client and internal stakeholders so changes land smoothly with minimal downtime * Visit client sites as needed * Communicate with clients effectively by phone and email * Log and update tickets accurately within SLAs * Effectively maintain documentation Your Skills & Experience * 5+ years’ hands-on experience in IT support * Previous experience working within an MSP highly advantageous * Solid troubleshooting experience across the following: * Enterprise firewall management * Network infrastructure (switches, wireless access points) * Business email platforms * Cloud-based email filtering * Identity management platforms * Security monitoring (SIEM, MDR) * Enterprise password management * Hosted VoIP telephony * Backup and disaster recovery management * PSA and RMM tooling * Experience of PowerShell and automation * Microsoft/Azure certifications * Confident supporting Mac and Linux alongside Windows * Full UK driving licence and vehicle essential