Network Engineer — End-to-End IT Infra & Security

Fuse Energy; England; On-site; GBP 55,000 - 85,000; Full time

Benefits offered by this job

Competitive salary

Biannual bonus scheme

Fully expensed tech to match your need

Private health insurance

Breakfast and dinner allowance

Job summary

Fuse Energy is an AI‑first energy company in the UK, focused on making energy abundant and affordable. We’re building fast, secure infrastructure to support real‑time operations across multiple offices.

We are hiring a Network Engineer to own and improve networks, firewall security and workplace technology with autonomy to solve problems end‑to‑end. In this role you’ll design and administer LAN/WAN, Wi‑Fi, VPNs and monitoring, collaborate with Engineering and Security, and help scale our office

Qualifications

• Strong hands‑on troubleshooting experience across networks, Wi‑Fi, firewalls, endpoints, hardware and workplace technology.
• Practical experience administering Cisco LAN/WAN environments and FortiGate firewalls.
• Experience providing 2nd/3rd-line IT support and running reliable office or corporate networks, ideally across multiple sites.
• Comfortable owning infrastructure end to end, including connectivity, hardware, monitoring and vendors.
• Solid Linux and Windows administration fundamentals.
• Clear communication and a calm, pragmatic approach when supporting people during incidents.

Responsibilities

• Provide advanced 2nd/3rd-line IT and infrastructure support across Fuse’s offices, acting as the escalation point for complex issues.
• Troubleshoot issues end to end across networks, Wi-Fi, firewalls, laptops, meeting-room AV, printers and internal systems.
• Design, administer, secure and improve LAN/WAN, Wi-Fi, VPN, firewall and internet connectivity, including Cisco networking infrastructure and FortiGate firewalls.
• Own office hardware, workplace technology and on-site infrastructure, including small build/server environments.
• Improve onboarding, offboarding, device management, identity and access management.
• Work with Engineering and Security on network segmentation, firewall policy, remote access and security hygiene.
• Build monitoring, alerting and documentation to keep business-critical internal systems available and prevent repeat issues.

Skills

Network troubleshooting

Cisco LAN/WAN

FortiGate firewalls

IT support (2nd/3rd line)

Linux administration

Windows administration

Incident response

Communication

Tools

Cisco networking

FortiGate firewall

Job description

Fuse Energy is an AI‑first energy company in the UK, focused on making energy abundant and affordable. We’re building fast, secure infrastructure to support real‑time operations across multiple offices.

We are hiring a Network Engineer to own and improve networks, firewall security and workplace technology with autonomy to solve problems end‑to‑end. In this role you’ll design and administer LAN/WAN, Wi‑Fi, VPNs and monitoring, collaborate with Engineering and Security, and help scale our office