Network Engineer

SiXworks; Farnborough; On-site; GBP 45,000 - 70,000; Full time

Benefits offered by this job

25 days leave

Private Medical cover

Life Assurance

Pension 10%/5%

Bonus

Development support

Secure parking

Gym

On-site cafe & restaurant

Open break spaces

Job summary

SiXworks is a specialist digital innovation partner delivering secure, mission-critical technology to Defence and National Security organisations. We’re seeking a Network Engineer to design, build, and deliver secure digital solutions in highly secure environments, collaborating with engineers, architects, and delivery specialists to enable faster, safer decision-making for critical operations.

Role involves implementing WAN/LAN, SD-WAN, VPNs and network security infrastructure, creating design

Qualifications

• Solid networking foundation and principles.
• Multi-Vendor switching experience.
• Firewalling techniques & hardware knowledge.
• WAN technologies experience.
• Understanding of working in protectively marked environments.
• Ability to work with customers in a professional manner.
• Lab and POC of new technologies while solving problems.

Responsibilities

• Design, build, and deliver secure digital solutions in highly secure environments.
• Implement WAN/LAN, SD-WAN, VPNs and network security infrastructure.
• Create configuration guides from high level and low level designs.
• Lab and POC new technologies while providing operational support.

Skills

Wide Area Network Architecture

Software-Defined WAN

OSPF & BGP routing

VPNs & Network Security

High-Level / Low-Level Design

Tools

Ansible

Terraform

NSX

Mellanox hardware

Cumulus Linux

Nvidia Networking

Job description

Work on Technology That Protects What Matters

At SiXworks, we build secure digital solutions that support Defence and National Security missions. Our teams work on complex problems where reliability, security, and speed of innovation matter.

We’re looking for a Network Engineer who enjoys solving difficult technical challenges and wants their work to have real operational impact.

What You’ll Do

As a Network Engineer, you’ll help design, build, and deliver secure digital solutions in highly secure environments. You’ll work alongside engineers, architects, and delivery specialists to develop technology that enables faster, safer decision-making for critical operations.

• Do you feel as comfortable building and supporting production LANs as you do global WANs?
• Can you implement firewall rules from an application’s bespoke requirements?
• Are you a tinkerer able to lab and POC new technologies while also able to be a CLI-jockey?
• Do you want to work in an organisation working on latest technologies and incorporating solutions in an innovative way?
• Are you ready to learn about Secure by Design methodologies from a company working in National Security & Defence?

What We’re Looking For

We value people who take ownership, think critically, and enjoy working as part of a collaborative team tackling complex challenges. You don’t need to tick every box, but we’re particularly interested in people with skills/experience in:

Implementation and Support of;

• Wide Area Network Architecture
• Software-Defined Wide Area Network
• Network Routing Protocols – OSPF, BGP
• Virtual Private Networks (VPNs) and Network Security Infrastructure – e.g. IKEv2, NGFWs
• Creating configuration guides and implementing from High Level and Low Level Designs

Desirable

• Solid networking foundation and principles
• Multi-Vendor Switching
• Firewalling techniques & Hardware – Multi vendor preferred
• WAN Technologies
• Understanding of working in protectively marked environments.
• Ability to work with our customers in an efficient and professional manner
• Able to work on the fly with limited support / access to problem solving materials.

Implementation and Support of;

• Data Centre Network Architecture – Spine/Leaf Fabric, EVPN, BGP, Geneve
• High Assurance IP Encryptors (HAIPE)
• Infrastructure Automation and Orchestration technologies (e.g. Ansible, Terraform etc.)
• Whitebox Network Infrastructure (e.g. Mellanox, Cumulus Linux, Nvidia Networking)
• Support and Troubleshooting of NSX
• Cisco CCNP or equivalent experience

Just as important are curiosity, strong problem solving ability, and the motivation to continuously improve how technology is designed and delivered.

About SiXworks

SiXworks is a specialist digital innovation partner delivering secure, mission-critical technology to Defence and National Security organisations. We focus on digital experimentation, secure-by-design architecture, cloud technologies, and rapid application development to help our customers move faster and stay ahead of evolving challenges.

Our team combines expertise from across technology, business, and operational backgrounds including the armed forces creating a collaborative environment where practical thinking and innovation thrive.

Why Join Us

Our culture is guided by six principles:Agility, Security, Innovation, Quality, Collaboration and InclusivityourNorth Star for how we work. SiXworks is a leading provider of secure digital solutions, specialising in digital experimentation and focused on fail-safe-fastcutting-edgetechnology solutions deployed in highly secure environments.

As an end-to-end digital innovation and delivery partner, we turn complex challenges into mission-critical digital advantages. This is a thrilling time for us, with ambitious plans for growth. We are looking for brilliant, experienced, driven and self-motivated people to join the team on our journey.

We offer competitive salaries and a package that supports your wellbeing and development,

• 25 days annual leave + bank holidays
• free Private Medical cover and Life Assurance
• Generous pension (10% employer, 5% employee contribution)
• Bonus
• Professional development and training support
• secure parking
• gym
• café & restaurant on site
• lots of open break out spaces

A word on UK Security Clearance

Due to the secure nature of the positionand working environment, you must have or be eligible to obtain Security Clearance. More details relating to UK Security Clearance can be found here: United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk)