Network Architect (Security Clearance)
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Job Location:
Monthly Salary:
Posted on:
30+ days ago
Vacancies:
1 Vacancy
Job Summary
Position Description:
At CGI we empower our technical experts to redefine whats possible in secure network design. As a Network Architect youll play a key role in reimagining and modernising network architecture that underpins complex air-gapped virtualised environments. Your work will directly influence mission-critical infrastructure ensuring resilience scalability and security across a highly secure programme. Youll collaborate with a talented team of engineers and testers to deliver advanced high-performance solutions that enable transformation innovation and enduring success for our clients.
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 youll be part of an open friendly community of experts. Well train and support you in taking your career wherever you want it to go.
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 full-time on-site position based in Reading.
Your future duties and responsibilities:
In this role you will lead the redesign and optimisation of complex multi-environment network architectures focusing on modernising connectivity across air-gapped and virtualised infrastructures. Youll take ownership of technical direction ensuring secure high-performing designs that meet both client and programme objectives. Working closely with infrastructure test and security teams youll produce high-quality technical documentation and guide implementation through to validation and delivery.
Youll have the opportunity to shape secure network solutions that balance innovation and reliability collaborating within a supportive environment that values initiative creative problem-solving and precision in execution.
Key responsibilities:
Lead & Innovate: Redesign existing network architecture integrating modern layer 3 switches layer 2 switches routers and firewalls.
Design & Deliver: Produce detailed High-Level (HLD) and Low-Level (LLD) network designs ensuring alignment with secure system requirements.
Collaborate & Support: Partner with test teams to provide consultation on appropriate test design and validation approaches.
Optimise & Automate: Enhance network performance and reliability through modernisation and configuration best practice.
Advise & Influence: Serve as a technical authority on network security architecture and system interconnectivity.
Required qualifications to be successful in this role:
You should bring strong experience in designing and implementing secure virtualised network architectures with deep knowledge of routing switching and firewall configurations. A proactive detail-focused approach and the ability to work in a highly secure collaborative environment are essential.
Essential skills and experience:
Proven experience designing and deploying complex secure network architectures.
Strong understanding of Layer 2 and Layer 3 switching and routing principles.
Hands-on experience with Juniper SRX firewalls (e.g. SRX240) and Cisco Layer 2 switches (e.g. Cisco 2960).
Experience with Dell switches VMware virtualisation and Windows Server environments.
Familiarity with Mini Catapans or similar air-gapped networking solutions.
Ability to produce detailed HLD/LLD documentation and collaborate effectively with testing and implementation teams.
#LI-SB2
Skills:
- Cisco
- Firewalls
- Network Architecture
What you can expect from us:
Together as owners lets turn meaningful insights into action.
Life at CGI is rooted in ownership teamwork respect and belonging. Here youll reach your full potential because
You are invited to be an owner from day 1 as we work together to bring our Dream to life. Thats why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our companys strategy and direction.
Your work creates value. Youll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas embrace new opportunities and benefit from expansive industry and technology expertise.
Youll shape your career by joining a company built to grow and last. Youll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.
Come join our teamone of the largest IT and business consulting services firms in the world.
Key Skills
- Load Balancing
- Routing Protocols
- Network Engineering
- BGP
- LAN
- Computer Networking
- IPsec
- OSPF
- Cisco ASA
- Juniper
- MPLS
- Network Architecture
About Company
The COMPANY is one of the few end-to-end consulting firms with the scale, reach, capabilities and commitment to meet clients’ enterprise digital transformation needs. Our 77,500 consultants and professionals work side-by-side with clients in 10 industries across more than 400 location ... View more
