Network Engineer - Active Uk Government Security Clearance Required

Appvia; United Kingdom; Hybrid; GBP 55,000 - 75,000; Full time

Benefits offered by this job

Hybrid working

25 days holiday + bank holidays

Birthday day off

Private healthcare

Pension

Learning budget

MacBook Pro

Job summary

Appvia is seeking a Network Engineer to support a secure public sector engagement, covering live network operations, WAN design, and a major network transition programme. This hands-on role involves maintaining complex infrastructure, designing and documenting network solutions, and working with customers to agree designs.

You will broaden your cloud, automation, and platform engineering skills within Appvia while progressing in a supportive, security-conscious environment.

Qualifications

• CCNA certification or equivalent networking knowledge
• Detailed knowledge of Cisco SD-WAN and BGP
• Ability to produce network diagrams and technical documentation
• Customer-facing experience and ability to translate technical details for stakeholders
• Active UK SC clearance; NPPV3 desirable

Responsibilities

• Contribute to the design of WAN solutions and produce supporting network diagrams and technical documentation
• Engage directly with customer stakeholders to agree network designs and solutions
• Support and maintain production network infrastructure across secure environments
• Troubleshoot network incidents, connectivity issues, and performance problems
• Implement planned network changes safely and effectively
• Support routing, switching, firewalling, and load-balancing technologies
• Contribute to network upgrades, migrations, optimisation, and continuous improvement
• Monitor network health and performance using observability and monitoring tooling
• Participate in root-cause analysis and problem management
• Maintain technical documentation, configuration records, and operational procedures
• Collaborate with engineering, service management, and customer teams
• Identify opportunities to improve reliability and resilience
• Carry out installation and decommissioning of network systems and equipment
• Support testing and test planning activities for network changes

Skills

Cisco SD-WAN

BGP routing

CCNA certification

Network design

Troubleshooting

Customer-facing

Documentation

Education

CCNA or equivalent networking knowledge

Tools

Palo Alto firewall

Check Point firewall

Load balancers

Network monitoring tools

Observability platforms

Job description

Network Engineer - Active UK Government Security Clearance Required

Location: UK - Hybrid / customer-site requirements TBC

Contract: Permanent, Full-time

About Appvia

Appvia is a specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise infrastructure, improve reliability, and adopt cloud-native practices that enable long-term, sustainable delivery.

Our engineering capability spans AWS, Azure, platform engineering, networking, software, data, AI, delivery, and managed services.

We work across complex, high-impact environments in both the public and private sector, delivering solutions where security, resilience, scalability, and operational excellence are critical.

About the Role

We're hiring a Network Engineer to join Appvia on a new secure public sector engagement covering live network operations, wide area network (WAN) design, and a major network transition programme.

This is a hands-on role where you'll support and maintain complex network infrastructure, contribute to the design of WAN solutions, troubleshoot incidents, implement changes, and help improve the reliability and performance of critical services.

Alongside day-to-day operational support, you'll be involved in designing and documenting network solutions, and working directly with customers to agree designs as part of an ongoing network transition programme. You'll also have the opportunity to broaden your cloud, automation, and platform engineering skills over time as part of your progression within Appvia.

Interview Process - 3 Stage

• Discovery conversation with Talent Acquisition
• Technical Interview with Engineering Team
• Final Interview with Leadership

Important

You must hold active UK Security Clearance (SC). NPPV3 clearance is highly desirable.

Requirements

About You

You are a hands-on Network Engineer comfortable supporting complex, high-availability environments, contributing to WAN design work, and working through technical issues in a structured and methodical way.

You will bring:

• Detailed knowledge of Cisco SD-WAN technologies and how BGP is applied within them
• CCNA certification, or demonstrable equivalent knowledge of networking concepts, switching, routing, firewalling, and load balancing
• Skilled in producing detailed network diagrams and technical documentation
• Ability to translate technical detail into clear business language for non-technical stakeholders
• Customer-facing experience, able to work directly with customers to agree network designs and solutions
• Strong troubleshooting and incident-resolution skills
• Understanding of resilient and highly available network design
• Experience working in live service, operational, or managed-service environments, including incident management
• Experience with network testing and test planning
• Experience with systems installation and decommissioning
• Clear communication skills and confidence working with technical teams and stakeholders
• A proactive, customer-focused approach
• Active UK SC clearance

Responsibilities

• Contribute to the design of WAN solutions and produce supporting network diagrams and technical documentation
• Engage directly with customer stakeholders to agree network designs and solutions
• Support and maintain production network infrastructure across secure environments
• Troubleshoot network incidents, connectivity issues, and performance problems
• Implement planned network changes safely and effectively
• Support routing, switching, firewalling, and load-balancing technologies
• Contribute to network upgrades, migrations, optimisation, and continuous improvement
• Monitor network health and performance using observability and monitoring tooling
• Participate in root-cause analysis and problem management
• Maintain technical documentation, configuration records, and operational procedures
• Collaborate with engineering, service management, and customer teams
• Identify opportunities to improve reliability and resilience
• Carry out installation and decommissioning of network systems and equipment
• Support testing and test planning activities for network changes

Technical Skills

Core technologies / experience:

• CCNA or equivalent demonstrable knowledge of networking concepts, switching, and routing
• Firewalls such as Palo Alto or Check Point
• Load balancing
• BGP (Border Gateway Protocol)
• Network monitoring and observability
• Network testing / test planning
• Systems installation and removal

Nice to have:

• Cloud experience (Azure or AWS)
• NPPV3 clearance
• Experience working with third‑party network suppliers or in multi‑vendor environments
• Network configuration management
• Encryption / secure network communications

We are a self-funded, London based startup; providing businesses with a fast and secure way to deploy containerised applications into the cloud.

We are on a mission to enable organisations to make cloud-based software delivery simple and efficient, whilst having the insights into costs, security and cadence. As a company that holds customers at the heart of everything we do, we are looking for candidates that want to make a real change to how Dev and Ops is working in the industry.

With us our customers, like the UK’s Home Office & Bank of England, are harnessing cloud-native technologies, limiting the challenges of infrastructure management and rapidly delivering digital products.

What’s on offer?

• Flexible working with core hours of 10-4pm because we know life happens outside of work
• Hybrid working - only one compulsory office day per month
• 25 days’ holiday a year, plus bank holidays
• An additional day off for your birthday
• Enhanced maternity and paternity to full pay
• Workplace Nursery Benefit to help working parents
• Full Private Healthcare cover for you with partners and children covered 50%
• Death in Service
• Cycle to Work scheme
• Electric Car Scheme
• Pension plus a salary sacrifice option for even greater savings
• Employee Assistance Programme
• Free hygiene products available in the London office
• Free therapy through AXA
• Access to the Headspace App
• Trained Mental Health First Aiders
• Learning budget of £1,000 a year
• Your own MacBook Pro while you work at Appvia
• Dog friendly office
• Wear what makes you comfortable
• Free snacks in the office
• Regular team socials, board game nights, industry meetups and more!
• Pool table & ping pong table

But don’t just take our word for it, you can check out what our Appvians say about us on Glassdoor and by following us on LinkedIn, Twitter and TikTok.

We are proud to be an equal opportunities employer and actively encourage, respect, and recognise diversity of thought and background throughout the business. All applicants will be considered for employment without attention to age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, or veteran, neurodiversity, and disability status.

Note: While all roles are active and approved at the time of posting, the dynamic nature of our start‑up means some applications may be processed to pipeline talent for future opportunities rather than current openings. We will strive to keep you informed of any changes to the status of your application.