Senior IT Infrastructure Engineer – Field & 3rd Line

Slice Solutions; Barnsley; On-site; GBP 38,000 - 42,000; Full time

Job summary

Slice Solutions in Barnsley is seeking a Senior IT Infrastructure Engineer to join our technical team. The role combines hands‑on infrastructure engineering with advanced 3rd line technical support, predominantly from the Barnsley office with occasional field visits to customer sites.

You will install, configure and troubleshoot business networks, switches, firewalls, Routers and server infrastructure, while delivering upgrades and managing projects.

Qualifications

• Proven experience in IT infrastructure and field engineering.
• Hands-on experience with business IT networks and server environments.
• Ability to install, configure and troubleshoot networking gear and security devices.
• Experience delivering 3rd line technical support and project work.

Responsibilities

• Installing, configuring and maintaining IT networks and infrastructure at customer sites.
• Deploying and troubleshooting managed switches, firewalls, routers and wireless networks.
• Configuring VLANs, VPNs, routing, switching, DHCP, DNS and IP addressing.
• Installing and supporting Windows Server, Active Directory and Hyper-V environments.
• Delivering network upgrades, server migrations, firewall replacements and infrastructure projects.
• Providing 3rd line technical support, investigating and resolving complex customer issues.
• Acting as an escalation point for 1st and 2nd line technicians, offering technical guidance and support.
• Carrying out network assessments, site surveys and infrastructure health checks.

Skills

Field Engineer

Network Engineer

3rd Line Support

Windows Server

Active Directory

Tools

Managed switches

Firewalls

Routers

VPNs

Hyper-V

DNS/DHCP

Job description

Slice Solutions in Barnsley is seeking a Senior IT Infrastructure Engineer to join our technical team. The role combines hands‑on infrastructure engineering with advanced 3rd line technical support, predominantly from the Barnsley office with occasional field visits to customer sites.

You will install, configure and troubleshoot business networks, switches, firewalls, Routers and server infrastructure, while delivering upgrades and managing projects.