Infrastructure Architect (DV Security Clearance)

Position Description

At CGI, you will help design and deliver the secure, resilient technology platforms that underpin some of the UK’s most critical Space, Defence and Intelligence programmes. As a Technical Architect, you will play a pivotal role in shaping infrastructure solutions that are robust, scalable and future-ready, working at the forefront of secure innovation. You will be trusted to take ownership of complex designs, influence technical direction, and ensure solutions deliver real operational value. Supported by a collaborative culture that encourages creativity and shared accountability, you will have the opportunity to make a lasting impact while continuing to grow your career in a highly 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, 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.

Please note this role i

s based full time on client site near Corsham. Due to the secure nature of the programme, you will need to hold DV or HLC clearance. Candidates with SC clearance who are willing to progress to DV will also be considered.

Your future duties and responsibilities

In this role, you will lead the design, governance and delivery of secure infrastructure architectures across complex environments. You will take ownership of technical solutions from high-level design through to low-level implementation, ensuring they align with architectural standards, security requirements and operational needs. Working closely with delivery teams, operations and stakeholders, you will translate business requirements into resilient, scalable platforms that support mission-critical services.

You will act as a technical authority throughout delivery, providing leadership, assurance and hands-on expertise across virtualisation, networking, security and identity platforms. With strong support from CGI’s expert community, you will be encouraged to innovate, improve standards, and continuously enhance the quality and consistency of technical delivery.

Key responsibilities include:

• Lead & Own end-to-end infrastructure architecture design from HLD to LLD

Define & Govern architecture standards, patterns and best practices

Design & Deliver VMware Cloud Foundation (VCF) solutions across compute, storage and lifecycle management

Architect & Secure NSX-T solutions including overlay networking and micro-segmentation

Design & Implement secure network architectures across data centre and hybrid environments

Oversee & Assure identity solutions including Active Directory and ADFS

Support & Design Windows and Linux server platforms and core services

Act & Lead as technical authority during delivery, resolving complex issues

Engage & Translate business requirements into robust technical solutions

Required Qualifications To Be Successful In This Role

You will bring strong experience designing and governing secure infrastructure solutions within complex, regulated environments. You will be comfortable providing technical leadership, producing high-quality designs, and communicating clearly with both technical and non-technical stakeholders.

Essential qualifications include:

• Proven experience as a Technical Architect or Senior Infrastructure Architect

Strong hands-on experience with VMware Cloud Foundation (VCF)

Deep knowledge of NSX-T Data Centre, including network security and micro-segmentation

Strong understanding of network security, firewall technologies, routing and switching

Experience designing and governing identity solutions using Active Directory and ADFS

Strong experience with Windows Server and Linux operating systems

Proven ability to produce clear, high-quality HLDs and LLDs

Desirable experience includes:

• Hybrid or multi-cloud architectures
• Automation and infrastructure-as-code concepts
• Security architecture and zero-trust principles
• Experience working in large enterprise or highly regulated environments
  
  

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll 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. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansi

ve industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll 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 team—one of the largest IT and business consulting services firms in the world.