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Security Engineer, Network

Nomios
Full Timemid
CAPosted February 27, 2026

Job Description

Organisations across the globe depend on us to help secure and connect their digital infrastructures.

We are excited to support our continued UK growth by welcoming a talented Network and Security Engineer to our Services Team on a 24/7 shift rota. This is a fantastic opportunity for an engineer ready to move to the next level of their career while collaborating with a team of technical experts and working with top-tier industry vendors, including Juniper, ADVA, and Fortinet. Join us and be part of delivering service excellence to our customers!

Your role as a 24/7 L2 Network & Security Engineer (Managed Services)

As a Network and Security Engineer, you will play a pivotal role in our customer support processes, ensuring the seamless operation of UK-based ISP and Enterprise networks. Your responsibilities will include proactive monitoring, maintenance, and troubleshooting to deliver optimal performance and reliability. You will be integral to providing 24/7 coverage and support to our diverse customer base, playing a critical role in maintaining service availability, resolving incidents, and driving continuous improvement in network operations.

Network Monitoring & Incident Management:

Monitor Nomios customer network infrastructures (routers, switches, firewalls, servers) using various NOC tools

Identify, troubleshoot, and resolve network issues affecting service availability, performance, and reliability

Escalate unresolved issues to the appropriate technical teams, vendors, or third parties as needed

Ticket Management:

Manage and track incidents, problems, and change requests using the ticketing system (e.g., Salesforce, ServiceNow, NetAdmin, JIRA, or Remedy)

Troubleshooting & Root Cause Analysis:

Conduct initial diagnostics, network testing, and troubleshooting for any detected or reported incidents

Perform root cause analysis for recurring network issues and recommend improvements or solutions

Change Management & Maintenance:

Participate in scheduled maintenance windows, supporting planned network changes and upgrades

Ensure all changes adhere to the change management process and do not negatively impact service continuity

Customer Support & Communication:

Act as the first point of contact for customers, responding to their technical queries and requests

Liaise with customer internal teams to gather and share relevant information for efficient incident resolution

Provide daily, weekly, and monthly reports on network performance, incidents, and operational metrics

Work proactively to suggest network optimisations and infrastructure improvements

A strong desire for continuous learning and self-improvement is essential.

To succeed in this role, you must be able to demonstrate the skills and competencies required to deliver exceptional performance in the responsibilities outlined above.

Excellent verbal and written communication skills, with the ability to provide clear updates to both technical and non-technical stakeholders

Good understanding and hands-on experience of working on IP, OSPF, BGP, and MPLS based networks (ideally Juniper-focused)

Exposure to GPON & XGSPON access networks

Good experience with ticketing systems such as Salesforce, ServiceNow, NetAdmin, etc., Knowledge of network monitoring tools such as SolarWinds, Nagios, Zabbix, or similar

Hands-on experience of working with ADVA, SmartOptics, Nokia, or Ciena kit would be advantageous

Hands-on experience of building and maintaining Dell/HP servers would be advantageous

This role is home-based with occasional visits to the office in Basingstoke

Hours are based on 12-hour shifts: 2 days, 2 nights; 4 days/nights off

You will work alongside high calibre sales, technical, and operational experts as part of a supportive, tight-knit team, within which every individual has an important part to play and makes a real difference. This includes, but is not limited to, discrimination because of age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion and belief, sex and sexual orientation.

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