Senior Infrastructure Architect

At CGI youll shape the infrastructure foundations that enable complex digital solutions to perform securely reliably and at scale. As a Senior Infrastructure Architect youll take ownership of defining and assuring infrastructure across bids deals and projects translating business needs into practical architectures that balance performance cost and risk. Youll have the freedom to evaluate emerging technologies challenge established thinking and influence key technical decisions while collaborating with solution architects delivery teams and clients. Supported by CGIs wider community of experts youll share your knowledge develop others and help turn innovative ideas into high-quality infrastructure solutions that create lasting value 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 hybrid position with expectation of working 2/3 days a week in our London Office.

In this role you will take ownership of defining validating and communicating infrastructure architectures across bids deals and projects. Acting as the link between Solution Architects development teams business stakeholders and project management youll translate requirements into logical infrastructure models component specifications and detailed designs that can be successfully implemented.
Youll lead infrastructure thinking while drawing on expertise from CGI colleagues suppliers and specialist teams. Youll have the opportunity to explore new technologies challenge assumptions and recommend approaches that improve performance scalability and value. Youll also support colleagues through mentoring and knowledge sharing contributing to a collaborative environment where technical expertise can develop and thrive.
Architect & Define Develop logical infrastructure models component specifications and detailed designs aligned with the overall solution architecture.
Lead & Influence Act as the focal point for infrastructure design and provide clear technical direction across multidisciplinary teams.
Assess & Innovate Evaluate current and emerging technologies advising on suitability price performance and potential business benefits.
Align & Advise Ensure infrastructure decisions support client objectives while managing stakeholder expectations throughout delivery.
Assure & Review Support formal and informal technical reviews to maintain the quality and integrity of infrastructure designs.
Manage & Mitigate Own infrastructure concerns and architectural decisions contributing to technical risk management and mitigation.
Optimise & Scale Address non-functional requirements including availability scalability capacity and performance.
Plan & Estimate Consolidate infrastructure effort and cost estimates from teams suppliers and subcontractors.
Coordinate & Deliver Work closely with project managers and specialist architects to coordinate resources and support successful delivery.
Mentor & Develop Share architectural expertise and support the professional development of colleagues.

Youll bring strong experience designing enterprise infrastructure solutions and the ability to turn complex business and technical requirements into clear implementable architectures. You should be comfortable owning architectural decisions influencing stakeholders and balancing quality performance commercial considerations and risk while working collaboratively across technical and delivery teams.
Strong experience as an Infrastructure Architect or in a comparable infrastructure architecture role.
Proven ability to develop logical infrastructure models component specifications and detailed designs.
Strong knowledge of enterprise infrastructure architecture principles patterns and standards.
Experience translating business and solution requirements into implementable infrastructure designs.
Strong understanding of non-functional requirements including availability scalability and performance.
Proven experience identifying assessing and mitigating infrastructure risks and technical concerns.
Ability to review and assure technical designs against requirements and architectural standards.
Experience supporting technical planning change governance and delivery across the project lifecycle.
Strong stakeholder management skills with the ability to communicate architectural decisions clearly.
Experience assessing current and emerging technologies including their cost performance benefits and risks.
Ability to develop reliable infrastructure effort and cost estimates using input from technical teams suppliers and subcontractors.
Experience working effectively with technology vendors and specialist partners.
Strong technical leadership mentoring and knowledge-sharing capabilities.
#LI-TC1

• Client management
• Cost Management
• Delivery management
• Infrastructure
• Infrastructure architecture
• Mentoring and coaching
• Process Management
• Risk analysis
• Stakeholder management

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.

That same commitment to fairness extends to how we use technology. To support our recruitment team AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

Come join our teamone of the largest IT and business consulting services firms in the world.