Senior Infrastructure Engineer

Salary: £55,000 - 55,000 per year

Requirements:

• 4-5 years in a similar senior IT/networking role
• Strong expertise with Cisco routers & switches
• Proficient in TCP/IP networking, firewalls (Fortinet), and IT security
• Experience with Windows Server (2016/2019/2022) and Hyper-V
• Knowledge of Active Directory & Azure AD
• Familiarity with Microsoft Azure, Office 365, and Intune
• Support for Windows 10/11 & Apple devices (MDM/Meraki)
• Experience with backup & disaster recovery solutions
• Strong communication and customer-facing skills
• SQL Server experience beneficial

Responsibilities:

• Design, implement, and support secure, scalable network solutions across multi-site customer environments.
• Lead the delivery of network and core infrastructure projects, including new installations, upgrades, and migrations.
• Manage and maintain on-prem and cloud infrastructure, ensuring high availability, performance, and security.
• Provide senior-level support for routing, switching, firewalls, VPNs, and WAN connectivity.
• Administer and support Windows Server environments, virtualised platforms (Hyper-V), and associated services.
• Support and optimise Microsoft cloud technologies, including Azure, Azure AD, Office 365, and Intune.
• Monitor infrastructure performance, capacity, and security; proactively identify risks and improvement opportunities.
• Implement and maintain security policies, patching, firmware updates, and disaster recovery solutions.
• Act as an escalation point for complex technical issues, providing remote and on-site support where required.
• Produce and maintain high-quality technical documentation, including network diagrams, configurations, and procedures.
• Work closely with senior management and other technical teams to define standards, policies, and best practices.
• Provide technical guidance, mentoring, and oversight to junior engineers and field teams.

Technologies:

• Active Directory
• Azure
• Cloud
• Cisco
• Firmware
• Hyper-V
• Support
• Network
• Office 365
• SQL
• Security
• TCP/IP
• Windows
• DevOps

More:

We are a well-established IT solutions provider with over 30 years of experience supporting 400 client sites nationwide. We offer a competitive salary of up to £55,000 with a performance-related bonus, along with benefits such as a company car, company pension, private healthcare, flexible working schedule, employee discounts, and profit-share eligibility after 12 months. Our team is committed to delivering secure, scalable, and high-quality IT solutions, and we are looking for a customer-focused Senior IT Engineer to join us on-site in Abingdon, Oxfordshire.

last updated 33 week of 2026