Senior IT Support Engineer (3rd line) in Northampton

Energy Jobline
Hatfield, United States of America
yesterday

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior
Compensation
$ 42K

Job location

Hatfield, United States of America

Tech stack

Microsoft Windows
Microsoft Active Directory
Application Firewall
Azure
Backup Devices
Microsoft Online Services
Cloud Computing
Dynamic Host Configuration Protocol
Network Address Translation
Disaster Recovery
DNS
Firmware
Monitoring of Systems
Hyper-V
Virtual Private Networks (VPN)
Network Security
Network Troubleshooting
Microsoft Software
Windows Server
Network Diagrams
Routing
Azure
Security Software
Software Deployment
TCP/IP
Virtual Local Area Networks
Software Vulnerability Management
Wireless Networks
Network Routers
Computer Networking Systems
Sonicwall
Firewalls (Computer Science)
Information Technology
Palo Alto Networks
Patch Management
Wireless Technologies
Fortinet
Cisco networks
VMware

Job description

Job DescriptionSenior IT Support Engineer (3rd Line Support)Northampton (Hybrid)Monday - Friday, full time permanent Up to £42,000 DOE We are seeking an experienced Senior IT Support Engineer with proven 3rd Line Support expertise to join our client's growing IT team. The successful candidate will be responsible for resolving complex technical issues, maintaining and improving IT infrastructure, supporting business-critical systems, and leading IT projects from initial planning through to successful implementation and handover. This role requires strong troubleshooting skills across desktop, server, network, cloud, and security technologies, alongside in-depth knowledge of firewalls and network security. You will play a key role in delivering infrastructure projects, mentoring junior engineers, and driving continuous improvement across the IT estate.Key Responsibilities:\n \n

  • Provide 2nd and 3rd Line technical support for users across multiple sites. \n

  • Investigate, troubleshoot, and resolve complex hardware, software, server, network, and infrastructure issues. \n

  • Act as the primary technical escalation point for the Service Desk team. \n

  • Administer and support Microsoft 365 services, Azure AD/Entra ID, Windows Server, Active Directory, DNS, DHCP, and Group Policy. \n

  • Configure, maintain, and troubleshoot networking infrastructure including switches, routers, wireless solutions, VPNs, and enterprise firewalls. \n

  • Take ownership of firewall administration, including security policies, NAT, VPN configuration, rule management, firmware updates, monitoring, and troubleshooting. \n

  • Ensure network security best practices are maintained through firewall optimisation, vulnerability remediation, and access control management. \n

  • Lead and deliver IT infrastructure projects from initial scoping and planning through implementation, testing, documentation, user handover, and post-project support. \n

  • Work with internal stakeholders to gather technical requirements, produce implementation plans, and ensure projects are delivered on time and within scope. \n

  • Perform system upgrades, patch management, software deployments, and infrastructure improvements. \n

  • Monitor system performance and proactively identify opportunities to improve availability, reliability, and security. \n

  • Maintain accurate technical documentation, knowledge base articles, network diagrams, and operational procedures. \n

  • Support backup, disaster recovery, and business continuity solutions. \n

  • Liaise with third-party vendors and managed service providers where required. \n

  • Ensure compliance with IT security policies, industry best practices, and regulatory requirements. \n

  • Mentor and provide technical guidance to junior IT engineers and Service Desk analysts. \n

Requirements

  • Proven experience in a Senior 2nd Line or 3rd Line IT Support role within an enterprise environment. \n

  • Strong experience supporting Microsoft technologies including Microsoft 365, Windows Server, Active Directory, Azure/Entra ID, Exchange Online, DNS, DHCP, and Group Policy. \n

  • In-depth knowledge and hands-on experience managing enterprise firewalls (such as Sophos, Fortinet, Cisco, Palo Alto, WatchGuard, or SonicWall), including VPNs, NAT, security policies, and threat protection. \n

  • Strong networking knowledge covering TCP/IP, VLANs, routing, switching, wireless networking, and network troubleshooting. \n

  • Demonstrable experience delivering IT infrastructure projects from planning and design through implementation, testing, documentation, and completion. \n

  • Experience working with virtualisation platforms such as VMware or Hyper-V. \n

  • Knowledge of backup, disaster recovery, cybersecurity tools, and security best practices. \n

  • Excellent troubleshooting, analytical, and problem-solving skills. \n

  • Strong customer service, communication, and stakeholder management abilities. \n

  • Ability to manage multiple priorities, work independently, and meet deadlines. \n

  • Proactive, organised, and self-motivated with a continuous improvement mindset. \n

  • Relevant IT qualifications or degree desirable. \n

  • Microsoft certifications (Microsoft 365, Azure, Windows Server) and networking or firewall certifications (Fortinet NSE, Sophos, Cisco CCNA, etc.) are advantageous. \n

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