Integration Architect – AWS & Legacy Modernisation

Integration Architect – AWS & Legacy Modernisation

Position Description

At CGI, we help clients modernise critical technology platforms through scalable integration strategies that improve resilience, accelerate transformation, and unlock long-term business value. As an Integration Architect, you’ll play a pivotal role in shaping and delivering integration solutions within a major government transformation programme, helping migrate legacy technologies into modern cloud-based environments. Working across architecture, engineering, and delivery teams, you’ll influence technical direction, guide Agile delivery, and help drive complex programmes forward with confidence and clarity. Joining CGI means becoming part of a collaborative and supportive environment where your leadership, innovation, and technical expertise will directly contribute to meaningful transformation outcomes at scale.

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.

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.

Your future duties and responsibilities

In this role, you will define and lead integration architecture across a large-scale transformation programme focused on modernising legacy integrations and enabling cloud-based delivery capabilities. You’ll assess existing middleware and integration platforms, shape migration strategies, and design scalable solutions using modern API-led and event-driven architectures within an AWS environment.

Alongside architecture leadership, you’ll act as a hands-on technical delivery lead, guiding Agile teams through implementation while ensuring architectural governance, delivery progress, and technical quality. You’ll collaborate closely with stakeholders across business and technology functions, helping remove blockers, manage dependencies, and ensure successful delivery outcomes within a SAFe delivery environment.

Key responsibilities

• Define & Lead enterprise integration architecture aligned to strategic roadmaps
• Assess & Modernise legacy integrations across middleware and ESB platforms
• Design & Deliver API-led, event-driven, and file-based integration solutions
• Guide & Support Agile delivery teams through hands-on technical leadership
• Translate & Execute architecture into actionable delivery plans and outcomes
• Drive & Improve cloud-based integration migration strategies within AWS
• Govern & Maintain architectural standards, runway planning, and technical debt management
• Collaborate & Influence stakeholders across architecture, engineering, and business teams
• Resolve & Support complex integration challenges, dependencies, and delivery risks

Required qualifications to be successful in this role

To succeed in this role, you should bring strong experience delivering medium to large-scale IT or business change projects within complex environments. You’ll have excellent stakeholder and supplier management skills, a structured approach to governance and delivery, and the ability to balance strategic priorities with operational execution.

Essential qualifications

• Proven experience delivering IT or business transformation projects as a Project Manager
• Strong understanding of governance frameworks, project controls, and assurance processes
• Experience managing third-party suppliers, vendors, or managed service providers
• Knowledge of legacy application migration or transformation within enterprise environments
• Strong communication and stakeholder engagement skills across technical and business audiences
• Experience managing project budgets, reporting, contracts, and dependencies
• Proficiency with project management methodologies such as PRINCE2, Agile, or hybrid delivery
• Ability to manage multiple priorities and deliver outcomes within complex programme environments

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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 expansive 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.