(Senior) Network Operations Engineer

Utimaco; United Kingdom; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A tech firm in the United Kingdom is seeking an Operational Network Engineer to maintain and optimize their network infrastructure, including Juniper and Fortinet products. The ideal candidate should possess strong troubleshooting skills and proficiency in network protocols. The company offers a friendly corporate culture, flexible working hours, and health insurance benefits.

Benefits

Flexible working model

Health insurance

Support for future plans

Qualifications

• Solid hands-on expertise in operational network engineering.
• Proven experience with Juniper and Fortinet products.
• Strong understanding of network protocols and VPN technologies.

Responsibilities

• Configure, operate, and maintain network infrastructure.
• Implement and manage firewall policies and VPN connections.
• Monitor network health and performance using monitoring tools.

Skills

Operational network engineering

Configuration and troubleshooting

Network protocols (BGP, OSPF, RIP)

Ansible

Fluent in English

Tools

Juniper EX, QFX, SRX platforms

Fortinet FortiGate firewalls

Microsoft Azure networking

Wireshark

Prometheus

Grafana

Job description

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• Configure, operate, and maintain network infrastructure, including Juniper SRX firewalls, QFX/EX switches, Fortinet FortiGate firewalls, FortiSwitches, and OPNsense firewalls, as well as Microsoft Azure networking components.
• Implement and manage firewall policies, VPN connections (IPsec), and secure access methods following zero-trust and least-privilege principles.
• Monitor network health, traffic, and performance using tools such as Prometheus, Grafana Loki, and OpsGenie.
• Deploy and optimize network services such as Reverse Proxies (HAProxy, Traefik) and DNS configurations for high availability and resilience.
• Apply Infrastructure-as-Code principles using Ansible (and optionally Terraform) for repeatable, automated network deployments and configuration management.
• Troubleshoot and analyze network issues using Wireshark, nmap, and vendor-specific tools to ensure optimal performance and minimal downtime

Your profile

• Solid hands-on expertise in operational network engineering â configuration, troubleshooting, and lifecycle management in enterprise/global data center environments.
• Proven experience with Juniper EX, QFX, and SRX platforms, Fortinet FortiGate firewalls, FortiSwitches, and OPNsense firewalls, plus Microsoft Azure networking.
• Strong understanding of network protocols (BGP, OSPF, RIP), VPN technologies (IPsec), and secure network design principles.
• Familiarity with reverse proxy services (HAProxy, Traefik), DNS management, and performance optimization techniques.
• Proficiency in using Ansible (and optionally Terraform) for network automation, with a working knowledge of monitoring/logging tools (Prometheus, Grafana, Loki).
• Fluent in English with excellent communication, documentation, and problem-solving skills

We offer

• An open and friendly corporate culture characterized by constructive and collaborative interaction
• We provide you with support for your future plans with a company pension scheme (depending on country-specific circumstances).
• Early risers and night owls - thanks to a flexible working model you can organise your working day yourself.
• We also support you privately â benefit from special payments or additional vacation days on anniversaries or other special occasions.
• We provide all employees with health insurance for overseas travel and private accident insurance.
• Utimaco is growing and living diversity! Our global team includes colleagues from 42 nationalities and 45 different languages spoken.