Tier 3 Network Engineer

Date Posted:

2026-03-16

Country:

United Kingdom

Location:

Warminster, Wiltshire

Position Role Type:

Hybrid

Raytheon UK is searching for a Tier 3 Network Engineer to join our OMNIA® Training team.

As a Tier 3 Network Engineer, you will be critical to the successful delivery of the programme, collaborating within matrix organisation, with multi-disciplinary teams within Engineering

OMNIA are redefining the British Army’s collective training. To do that, we are looking for the best and brightest minds from across the UK. We are backed by British innovation and powered by world-class experts, like you.

We are looking for individuals who want to serve. You’ll have a mission focus, and the enthusiasm and drive to deliver. You must be eligible and willing to obtain SC clearance and will be based at Warminster working in a hybrid style.

The role:

This is more than a job — it’s a mission. You will be part of a high-impact, collaborative environment, where we expect everyone to live the values and standards of the British Army. Every person in our team plays a critical role in delivering OMNIA’s vision; designing, delivering, and transforming collective training so the British Army is ready to fight and win.

You’ll work in a matrix organisation and report operationally through OMNIA Training and functionally through the Tier 2 Support Lead . Ultimately, you’ll work for the British Army, championing innovation, and helping shape the future of military collective training.

Key Responsibilities:

• Provide Tier 3 technical support for complex network issues affecting live production systems, training platforms, and business services.
• Act as the highest level of escalation for network-related incidents and service outages.

Diagnose and resolve advanced networking issues across cloud, on-premise, and hybrid infrastructure environments.

Support incident, problem, and change management processes in accordance with ITIL service management practices.

Lead root cause analysis and remediation activities for major network incidents.

Maintain and optimise network performance, reliability, and availability across operational environments.

Support network configuration, upgrades, patching, and vulnerability remediation activities.

Work closely with infrastructure, cloud, and platform engineering teams to support system deployments and network integrations.

Monitor network performance and security using monitoring, logging, and observability tools.

Maintain accurate network documentation including topology diagrams, configuration records, and operational procedures.

Who we are looking for:

We’re after individuals who want to serve. You’ll have a mission focus, and the enthusiasm and drive to ‘get things done’. You’ll want to work in collaboration with other defence training organisations, and the British Army. You won’t let bureaucracy get in the way of what needs to be done, you’ll learn lessons and share these lessons across the team. You won’t necessarily have a military background, but you’ll understand what it means to serve and to put the mission first.

Essential Skills and Experience:

• Proven experience providing Tier 3 network support within complex enterprise or operational environments.
• Strong expertise in networking technologies including routing, switching, firewalling, VPNs, and network security.
• Experience supporting cloud networking environments (e.g. Azure Virtual Networks, AWS VPCs).
• Knowledge of deployable satellite internet constellations (e.g. Starlink) or similar technologies.
• Knowledge of 4/5G network solutions and technologies.

You will join at a unique time, where you can join in shaping this team and be rewarded with ongoing development opportunities, and clear pathways to progress within a trusted defence industry partner.

37hr working week with early finish Fridays - start your weekend early!

25 days holiday + statutory public holidays, plus opportunity to buy and sell up to 5 days and up to 5 paid days volunteering

10.5% company pension contribution with 6% employee contribution

Annual company bonus scheme (discretionary)

6 times salary Life Assurance with pension

Flexible Benefits scheme with extensive salary sacrifice schemes, including Health Cashplan, Dental, and Cycle to Work, amongst others

Enhanced sick pay

Enhanced family friendly policies including enhanced maternity, paternity & shared parental leave

Raytheon UK

We take immense pride in being a leader in defence and aerospace technology. As an employer, we are dedicated to fuelling innovation, nurturing talent, and fostering a culture of excellence. Together, we are not just advancing technology; we're building a community committed to safeguarding a safer and more connected world.

RTX

Raytheon UK is a landed company and part of the wider RTX organisation. Headquartered in Arlington, Virginia, USA, but with over 180,000 employees globally across every continent, RTX provides advanced systems and services for commercial, military and government customers worldwide and comprises three industry-leading businesses – Collins Aerospace Systems, Pratt & Whitney, and Raytheon.

RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.

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