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- Tasks: Join us as a Senior Network Engineer, focusing on support and design of advanced networking technologies.
- Company: CGI is a leading IT Systems Integrator, recognised for innovation in space, defence, and intelligence.
- Benefits: Enjoy competitive salary, private healthcare, pension, and a share scheme that makes you a partner.
- Why this job: Be part of a diverse community, work with cutting-edge tech, and shape your career from day one.
- Qualifications: Experience in senior network engineering, especially in regulated environments, with expertise in advanced networking technologies.
- Other info: This role requires UK Security Clearance and is based on-site near Chippenham.
The predicted salary is between 42000 - 63000 ÂŁ per year.
Senior Network Engineer (DV Security Clearance)
Position Description: As a Senior Network Engineer at CGI, you will play a pivotal role in safeguarding and advancing the networks that power our clients’ most critical missions. You will help shape resilient, secure, and scalable infrastructure while contributing to innovative integration and design projects that drive industry transformation. This role offers the chance to take meaningful ownership of complex challenges, collaborate with expert teams, and apply your creativity to deliver future‑ready network solutions. Supported by CGI’s strong engineering community, you’ll make a lasting impact across high‑value programmes while continuously growing your skills in a dynamic and trusted environment. 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, and a share scheme (3.5% + 3.5% matching) that 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 the Armed Forces, and we are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant.
Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance.
Key Responsibilities
- Lead & innovate: Provide advanced support and troubleshooting across Dell OS10, Sonic, Cisco, Palo Alto, and NSX‑T technologies.
- Develop & deliver: Contribute to network integration, solution design, and scalable infrastructure enhancements.
- Optimise & automate: Manage BGP, VPN, spine‑and‑leaf architectures, and data centre patching to maintain high performance.
- Maintain & enhance: Oversee IPAM and DNS, and optimise load‑balancing solutions, particularly F5.
- Integrate & secure: Support InfoBlox deployments and align network operations with wider infrastructure strategies.
- Collaborate & guide: Mentor junior engineers and strengthen cross‑team engagement.
- Support & protect: Participate in the on‑call rota to ensure fast, effective resolution of critical incidents.
Required Qualifications To Be Successful In This Role
To excel in this role, you should bring strong technical depth in enterprise and defence‑grade networks, combined with the ability to troubleshoot, design, and integrate complex solutions. You should be confident working in high‑availability environments and comfortable collaborating across teams to deliver secure, high‑impact outcomes.
Essential Qualifications
- Proven experience in a senior network engineering role.
- Strong background in defence environments.
- Expertise with Dell OS10, Sonic, Cisco networking, Palo Alto firewalls, and NSX‑T.
- Deep understanding of spine‑and‑leaf architecture, BGP, VPNs, and data centre patching.
- Strong knowledge of DNS, IPAM, load balancing; F5 and InfoBlox experience highly desirable.
- Excellent analytical, troubleshooting, and communication skills.
Desired Qualifications
- Understanding of cross‑domain technologies (Tiger Traps, Garrison, OpsWat, NiFi).
- Familiarity with VMware infrastructure and Elastic monitoring.
Employment type
Full‑time
Job function
Information Technology
Seniority level
Mid‑Senior level
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Senior Network Engineer (DV Security Clearance) employer: Women In Tech
Contact Detail:
Women In Tech Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Network Engineer (DV Security Clearance)
✨Tip Number 1
Make sure to highlight your experience in highly regulated environments, especially if you have worked in the defence sector. This will show that you understand the unique challenges and requirements of the role.
✨Tip Number 2
Familiarise yourself with the specific technologies mentioned in the job description, such as Dell OS10, Cisco firewalls, and Palo Alto firewalls. Being able to discuss these technologies confidently during an interview can set you apart from other candidates.
✨Tip Number 3
Network with current or former employees of CGI or similar companies. They can provide valuable insights into the company culture and the expectations for the Senior Network Engineer role, which can help you tailor your approach.
✨Tip Number 4
Prepare to discuss your problem-solving skills and how you've handled critical incidents in the past. Since this role includes on-call support, demonstrating your ability to remain calm under pressure will be crucial.
We think you need these skills to ace Senior Network Engineer (DV Security Clearance)
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with advanced networking technologies, particularly those mentioned in the job description like Dell OS10, Cisco firewalls, and Palo Alto firewalls. Use specific examples to demonstrate your expertise.
Craft a Compelling Cover Letter: In your cover letter, express your passion for network engineering and how your skills align with the responsibilities outlined in the job description. Mention your experience in regulated environments and your ability to work collaboratively with cross-functional teams.
Highlight Relevant Certifications: If you have any relevant certifications, such as CCNP or similar qualifications, make sure to include them prominently in your application. This will help demonstrate your commitment to professional development in the field of network engineering.
Showcase Problem-Solving Skills: Provide examples in your application that showcase your problem-solving abilities, especially in high-pressure situations. Highlight any experiences where you successfully resolved critical incidents or improved network performance.
How to prepare for a job interview at Women In Tech
✨Showcase Your Technical Expertise
Be prepared to discuss your experience with advanced networking technologies, particularly Dell OS10, Cisco firewalls, and Palo Alto firewalls. Highlight specific projects where you've successfully implemented or troubleshot these systems.
✨Demonstrate Problem-Solving Skills
Expect scenario-based questions that assess your troubleshooting abilities. Prepare examples of complex network issues you've resolved, focusing on your analytical approach and the impact of your solutions.
✨Understand the Company Culture
Research CGI's values and their commitment to inclusivity and teamwork. Be ready to discuss how your personal values align with theirs and how you can contribute to a positive work environment.
✨Prepare for On-Call Scenarios
Since the role includes on-call support, be ready to explain how you handle high-pressure situations. Share experiences where you've successfully managed critical incidents outside of regular hours.
