Senior Network Engineer

CIS Healthcare Ltd.; Belfast; Hybrid; GBP 50,000 - GBP 70,000; Full time

Job summary

A leading healthcare technology firm is seeking a network engineer to design and implement secure network services across data centers and Azure. The ideal candidate will have expertise in Fortinet firewalls, F5 BIG-IP, and Cisco routing/switching. This role involves leading complex change, improving reliability, and ensuring security compliance. Candidates should be prepared for 24/7 on-call duties in a hybrid work environment.

Benefits

Private healthcare

Enhanced pension options

Learning pathways

Quarterly Values Awards

Qualifications

• 5+ years of experience with complex network configurations.
• Hands-on expertise in Fortinet firewalls, F5 BIG-IP, and Cisco routing/switching.
• Experience working in Azure networking environments.

Responsibilities

• Engineered Azure networking solutions with vNet/vWAN and ExpressRoute.
• Led end-to-end network changes across firewalls and load balancing.
• Participation in a 24/7 on-call rota for problem management.

Skills

Advanced BGP/OSPF

Fortinet (policy/NAT)

Fortinet firewalls

F5 BIG-IP (LTM/ASM)

Cisco IOS/NX-OS

Scripting/automation (PowerShell/Python/Ansible)

Azure networking

DNS

Load-balancing patterns

Observability skills

Education

CCNP (or equivalent)

AZ-700 / Fortinet NSE / F5 certifications desirable

Job description

Join System C and help connect and transform health and care through secure, resilient networks that millions rely on every day. You'll design, implement and operate modern network services across our data centres and Azure, acting as the subject‑matter expert for Fortinet firewalls, F5 BIG‑IP and Cisco routing/switching. You'll lead complex change, solve major incidents, and raise the bar on reliability and security.

What You'll Do

• Own end‑to‑end network change across routing/switching, firewalls, VPN and load balancing
• Engineer Azure networking (vNet/vWAN, VNets, UDRs, private endpoints, ExpressRoute)
• Harden configurations and drive segmentation and security policy compliance
• Troubleshoot performance and availability (L2‑L7) using captures, logs and metrics
• Create clear documentation, runbooks and diagrams; mentor engineers and associates
• Participate in a 24/7 on‑call rota and drive problem management improvements

What You'll Bring

• Advanced BGP/OSPF, VRF / HA pairs/clusters; IPsec/SSL VPNs
• Fortinet (policy/NAT), F5 BIG‑IP (LTM/ASM), Cisco IOS/NX‑OS
• Azure networking, ExpressRoute, DNS and load‑balancing patterns
• Scripting/automation (PowerShell/Python/Ansible) and strong observability skills
• Zscaler knowledge a plus
• CCNP (or equivalent), with AZ‑700 / Fortinet NSE / F5 certifications desirable

Why System C?

We're one team who "own it", strive to always be better, and do the right thing. You'll find a friendly, supportive culture with real purpose, flexible benefits (from private healthcare to enhanced pension options), learning pathways, and recognition through our quarterly Values Awards.

Ways of working

Hybrid working, standard hours with out‑of‑hours change windows and on‑call participation.

Ready to make an impact? Apply today.