Salary: £30,000 - 53,000 per year
Requirements: - Proven experience in a Senior 2nd Line or 3rd Line IT Support role within an enterprise environment.
- Strong experience supporting Microsoft technologies including Microsoft 365, Windows Server, Active Directory, Azure/Entra ID, Exchange Online, DNS, DHCP, and Group Policy.
- In-depth knowledge and hands-on experience managing enterprise firewalls, including VPNs, NAT, security policies, and threat protection.
- Strong networking knowledge covering TCP/IP, VLANs, routing, switching, wireless networking, and network troubleshooting.
- Demonstrable experience delivering IT infrastructure projects from planning and design through implementation, testing, documentation, and completion.
- Experience working with virtualisation platforms such as VMware or Hyper-V.
- Knowledge of backup, disaster recovery, cybersecurity tools, and security best practices.
- Excellent troubleshooting, analytical, and problem-solving skills.
- Strong customer service, communication, and stakeholder management abilities.
- Ability to manage multiple priorities, work independently, and meet deadlines.
- Proactive, organised, and self-motivated with a continuous improvement mindset.
- Relevant IT qualifications or degree desirable.
- Microsoft certifications and networking or firewall certifications are advantageous.
Responsibilities: - Provide 2nd and 3rd Line technical support for users across multiple sites.
- Investigate, troubleshoot, and resolve complex hardware, software, server, network, and infrastructure issues.
- Act as the primary technical escalation point for the Service Desk team.
- Administer and support Microsoft 365 services, Azure AD/Entra ID, Windows Server, Active Directory, DNS, DHCP, and Group Policy.
- Configure, maintain, and troubleshoot networking infrastructure including switches, routers, wireless solutions, VPNs, and enterprise firewalls.
- Take ownership of firewall administration, including security policies, NAT, VPN configuration, rule management, firmware updates, monitoring, and troubleshooting.
- Ensure network security best practices are maintained through firewall optimisation, vulnerability remediation, and access control management.
- Lead and deliver IT infrastructure projects from initial scoping and planning through implementation, testing, documentation, user handover, and post-project support.
- Work with internal stakeholders to gather technical requirements, produce implementation plans, and ensure projects are delivered on time and within scope.
- Perform system upgrades, patch management, software deployments, and infrastructure improvements.
- Monitor system performance and proactively identify opportunities to improve availability, reliability, and security.
- Maintain accurate technical documentation, knowledge base articles, network diagrams, and operational procedures.
- Support backup, disaster recovery, and business continuity solutions.
- Liaise with third-party vendors and managed service providers where required.
- Ensure compliance with IT security policies, industry best practices, and regulatory requirements.
- Mentor and provide technical guidance to junior IT engineers and Service Desk analysts.
Technologies: - Active Directory
- Azure
- Cloud
- Firewall
- Firmware
- Hardware
- Hyper-V
- Support
- Microsoft 365
- NAT
- Network
- Security
- TCP/IP
- VPN
- VMware
- Windows
- Office 365
- Cisco
More:
We are seeking an experienced Senior IT Support Engineer with 3rd Line Support expertise to join our clients growing IT team in Northampton. This is a full-time permanent hybrid role, Monday to Friday, offering a salary of up to 42,000 DOE. The successful candidate will help resolve complex technical issues, maintain and improve IT infrastructure, support business-critical systems, and lead IT projects from planning through implementation and handover. We offer the opportunity to work across desktop, server, network, cloud, and security technologies in a role with real scope to influence infrastructure, improve service delivery, and mentor junior team members.
last updated 35 week of 2026