Network Engineer (DV Security Clearance)

CGI Group Inc.; City of Westminster; On-site; GBP 55,000 - 80,000; Full time

Benefits offered by this job

Insurance coverage

Medical benefits

Pension plan

Share Purchase Plan

Job summary

CGI Group Inc. is seeking a Network Infrastructure Engineer to own secure networking across programme environments, on-site in London. You will install, configure and maintain infrastructure, automate with Python, Bash and Ansible, and support Linux systems and virtualization including Proxmox.

The role emphasizes collaboration with CGI experts and stakeholders, with security-focused delivery and ongoing improvements in performance and resilience.

Qualifications

• CCNA-level networking knowledge and strong understanding of network security.
• Practical experience installing and configuring networking infrastructure.
• Strong Linux administration skills, preferably in Red Hat environments.
• Experience with Python, Bash and Ansible for scripting and automation.
• Working knowledge of AWS, Microsoft Azure and Google Cloud Platform (GCP).
• Experience building, maintaining and troubleshooting infrastructure environments.
• Experience with Juniper configuration and installation would be advantageous.
• Experience with Proxmox or comparable virtualization technologies would be advantageous.
• Ability to work collaboratively while taking ownership of technical deliverables.

Responsibilities

• Build & Configure: Install and configure secure networking infrastructure across programme environments.
• Maintain & Optimise: Support reliable, secure and high-performing network and infrastructure environments.
• Automate & Improve: Use Python, Bash and Ansible to streamline infrastructure and operational activities.
• Administer & Support: Manage Linux-based systems and support virtualisation environments including Proxmox.
• Enable Cloud: Apply networking and infrastructure knowledge across AWS, Azure and GCP environments.
• Troubleshoot & Resolve: Diagnose infrastructure and networking issues and implement effective solutions.
• Plan & Deliver: Build infrastructure on and off site and contribute to associated procurement activities.
• Collaborate & Contribute: Work with CGI experts and programme stakeholders to deliver secure, effective solutions.

Skills

CCNA level networking

Linux administration

Python scripting

Bash scripting

Ansible

AWS

Azure

GCP

Juniper networking

Proxmox virtualization

Tools

Proxmox

Juniper configuration

AWS

Azure

GCP

Job description

In this role, you will take ownership of installing, configuring and maintaining secure networking infrastructure and the environments that support it. You'll apply your networking and systems expertise to build reliable infrastructure both on and off site, troubleshoot issues and identify opportunities to improve performance, resilience and security. You'll have scope to develop creative approaches to automation using Python, Bash and Ansible, while working across Linux systems and cloud platforms. Supported by CGI colleagues and working collaboratively with programme stakeholders, you'll also contribute to infrastructure planning and procurement activities to help ensure the right solutions are delivered successfully.

• Build & Configure: Install and configure secure networking infrastructure across programme environments.
• Maintain & Optimise: Support reliable, secure and high-performing network and infrastructure environments.
• Automate & Improve: Use Python, Bash and Ansible to streamline infrastructure and operational activities.
• Administer & Support: Manage Linux-based systems and support virtualisation environments including Proxmox.
• Enable Cloud: Apply networking and infrastructure knowledge across AWS, Azure and GCP environments.
• Troubleshoot & Resolve: Diagnose infrastructure and networking issues and implement effective solutions.
• Plan & Deliver: Build infrastructure on and off site and contribute to associated procurement activities.
• Collaborate & Contribute: Work with CGI experts and programme stakeholders to deliver secure, effective solutions.

You’ll bring strong networking fundamentals at approximately CCNA level, combined with practical network security and infrastructure experience. You should be comfortable administering Linux environments, using scripting and automation technologies, and working with major cloud platforms. Experience with Juniper networking and Proxmox would strengthen your fit for the role.

• CCNA-level networking knowledge and strong networking fundamentals.
• Good understanding of network security principles and practices.
• Practical experience installing and configuring networking infrastructure.
• Strong Linux administration skills, ideally within Red Hat environments.
• Experience with Python, Bash and Ansible for scripting and automation.
• Working knowledge of AWS, Microsoft Azure and Google Cloud Platform (GCP).
• Experience building, maintaining and troubleshooting infrastructure environments.
• Experience with Juniper configuration and installation would be advantageous.
• Experience with Proxmox or comparable virtualisation technologies would be advantageous.
• Ability to work collaboratively while taking ownership of technical deliverables.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

We are a global business with 91,500 professionals across hundreds of locations worldwide, providing end-to-end IT and business process services that drive our clients' businesses. In the UK alone, we have around 6,000 member-partners working across 19 towns and cities, doing everything from writing complex code to designing sophisticated software solutions. The work we do powers some of the most ambitious projects that touch the lives of many. Our approach sets us apart, characterised by our proximity model, international presence, expertise, and operational excellence. We organise our operations within metro markets where our clients have concentrated footprints, empowering our local teams to build trusted, in-person relationships. As you build your career here, you'll develop your skills, share your insights, and work side‑by‑side with colleagues and clients on innovative solutions that address the most complex issues. Our commitment to ownership, flexibility, and being approachable makes us easy to do business with. Join us, and together, as owners, let's turn meaningful insights into action to meet the needs and balance the interests of our clients, shareholders, communities, and each other.

Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This is a role that requires you to be on site in London 5 days a week.

Benefits:

• - Insurance coverage
• - Medical benefits
• - Pension plan
• - Member Assistant Programme
• - Check4Cancer
• - Flexible time off
• - Share Purchase Plan
• - Member discounts
• - Dental benefits
• - Vision benefits
• - Profit Participation Plan
• - Health and Wellbeing Programme

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK 'Best Employer' by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you'll be part of an open, friendly community of experts. We'll train and support you in taking your career wherever you want it to go.