3rd Line Infrastructure Engineer

OneSchool Global UK is part of the wider OneSchool Global network, one of the most extensive and progressive groups of schools and educational support services worldwide, spanning 126 campuses across 20 countries. We are seeking an experienced 3rd Line Infrastructure Engineer to join our IT team on a full-time, permanent basis. This is a hybrid role requiring regular attendance at our Regional Support Office in Warwick (minimum three days per week). Please note that the office will relocate to a new site in Coventry in September 2026.

This role sits within a structured internal technical function and is responsible for the design, escalation support, optimisation, and continuous improvement of the organisation’s IT infrastructure estate. You will operate as an escalation point, working across a broad technology stack, including Microsoft and Azure cloud platforms, and contributing to both business-as-usual operations and strategic project delivery.

• Act as a 3rd line escalation point for complex infrastructure issues across cloud technologies and network environments
• Design, implement, and support infrastructure solutions aligned to business objectives and global IT roadmaps
• Provide technical leadership and guidance to wider IT teams, stakeholders, and service users
• Lead and contribute to infrastructure projects, ensuring delivery to agreed timelines and standards
• Maintain high levels of system availability, minimising disruption to operational and educational activities
• Ensure accurate documentation and ticket management via Halo
• Operate within Change Control and CAB frameworks, ensuring governance and risk mitigation
• Manage and collaborate with third-party vendors to ensure service delivery against SLAs
• Drive continuous improvement and remain up to date with emerging technologies, particularly across cloud, networking, and security

• Free breakfast and lunch on-site, plus free parking
• 25 days annual leave plus bank holidays
• Workplace pension and staff referral scheme
• A supportive and collaborative working environment
• Modern office facilities with well-equipped, technology-enabled workspaces
• The opportunity to work alongside skilled technical specialists within a high-performing team

• Proven experience operating at a 3rd Line Infrastructure Engineer level within a complex environment
• Strong expertise across: Microsoft Intune, Azure / Microsoft Entra ID, PowerShell scripting and automation, Microsoft 365 security and compliance tools (Defender, Purview), Exchange Online, Power Automate, Backup and email security platforms (e.g. Barracuda), Network infrastructure including switches, routers, and firewalls
• Experience with Ubiquiti and Cambium networking technologies is advantageous
• Strong understanding of change management, governance, and best practice frameworks
• Degree in an IT-related discipline and GCSE English and Maths (or equivalent)
• A proactive approach to continuous learning and professional development

Early applications are encouraged, and we reserve the right to close the vacancy if a suitable candidate is found.

OneSchool Global UK is committed to safeguarding and protecting the children and young people that we work with. As such, all posts are subject to a safer recruitment process, including the disclosure of criminal records, online searches and vetting checks. We ensure that we have a range of policies and procedures in place which promote safeguarding and safer working practice across the school. This is in line with statutory guidance Keeping Children Safe in Education 2024 and The Education Act 2002, we expect all staff and volunteers to share this commitment.