Job Title: Senior 3rd Line Engineer Location: Oxford-based (Remote then possibly to hybrid) Salary: 35-43k per annum (DOE) Industry: Managed Services Provider About UsWe are a fast-growing, client-focused Managed Service Provider (MSP) based in Oxford, supporting a wide range of businesses across the UK. We pride ourselves on our technical excellence, exceptional customer service, and strong team culture. As we expand our high-level support operations, we are looking for a skilled and experienced Senior 3rd Line Engineer to join our team remotely. Role OverviewAs a Senior 3rd Line Engineer, you will act as the technical escalation point for complex IT issues, major incidents, and high-priority projects. You will play a key role in maintaining and improving client infrastructure, mentoring junior staff, and liaising directly with clients to provide strategic and technical guidance. Key ResponsibilitiesProvide advanced technical support across Windows Server, Microsoft 365, Azure, networking, and security.Act as final escalation for 2nd and 3rd line issues from the Service Desk.Lead infrastructure projects including migrations, upgrades, and cloud transformations.Troubleshoot complex issues across servers, storage, firewalls, and virtualized environments.Maintain high availability and disaster recovery solutions (e.g., Veeam, Azure Site Recovery).Document solutions, create technical documentation, and contribute to the internal knowledge base.Participate in technical design, ..... full job details .....