3rd Line Support Engineer

Salary: £45,000 - 55,000 per year

Requirements:

• Previous experience in a 3rd Line Engineer, Senior Infrastructure Engineer, or similar position
• Experience leading or mentoring technical engineers within a service desk or MSP environment
• Strong technical knowledge across Microsoft 365, Azure, Windows Server, networking, and virtualisation technologies
• Experience supporting complex infrastructure and cloud environments
• Strong troubleshooting and problem-solving capabilities
• Excellent communication and stakeholder management skills

Responsibilities:

• Act as the primary escalation point for complex 3rd line technical issues
• Lead and support the 3rd line engineering team across daily operations and technical delivery
• Troubleshoot and resolve advanced infrastructure, cloud, networking, and security incidents
• Support and maintain Microsoft 365, Azure, virtualisation, backup, and server environments
• Assist with project delivery, system upgrades, migrations, and infrastructure improvements
• Work closely with 1st and 2nd line teams to provide technical guidance and escalation support
• Monitor service performance and contribute to continual service improvement initiatives
• Create and maintain technical documentation and best practice processes

Technologies:

• Azure
• Cloud
• Support
• Microsoft 365
• Security
• Windows
• Office 365

More:

We are a growing Managed Service Provider based in London, offering hybrid working, training and certifications, career progression, a collaborative culture, and exposure to enterprise technologies. We are looking to hire a 3rd Line Engineer / Team Lead to support and develop our expanding technical support function. This is a fast-paced MSP environment where you will work across Microsoft 365, cloud platforms, infrastructure, cyber security, networking, and disaster recovery solutions, combining hands-on technical work with team leadership responsibilities. You will have the opportunity to lead and develop a growing 3rd line support function, support a broad range of modern IT environments, and build your career within a growing technical team.

last updated 31 week of 2026