The Space, Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke, technically complex, mission‑critical systems that help our clients stay safe and secure. We deliver solutions across space, defence, intelligence, aerospace, and maritime, employing agile delivery and a deep cyber capability.
Due to the secure nature of the programme, you will need to hold the highest level of UK Security Clearance. This position will be based at client sites near Chippenham and Reading.
Candidate Profile
Be part of a dynamic, cross‑functional team driving the future of defence technology. Supporting the Ministry of Defence in the design and planning of a complex legacy system migration to a next‑generation, client‑owned cloud platform.
Your Responsibilities
* Concept Design & Target State Definition: contribute to the development of high‑level migration solutions, defining future‑state architecture and scope.
* High‑Level Design (HLD) Creation: produce comprehensive HLD documentation capturing system components, integration points, data flows, and security architecture.
* Component‑Level Low‑Level Design (LLD) Development: create detailed LLDs covering configurations, cloud services, identity/access controls, deployment patterns, and legacy integration.
* Legacy System Analysis & Gap Assessment: evaluate current architecture and technology to identify gaps and readiness for cloud migration.
* Migration Strategy & Roadmap Design: contribute to a phased, risk‑aware migration plan with rollback procedures and business continuity.
* Technical Documentation Support: produce essential artefacts such as RAIDO logs, asset inventories, and service transition plans.
* Collaborative Cross‑Functional Engagement: work with security, testing, and operations teams to validate architecture decisions and maintain governance alignment.
Required Qualifications
* Hybrid Cloud Solutions Architecture
* Solution Analysis
* Solution Design
* Cloud Migration (Design & Delivery)
* Public/Private Cloud Practitioner
* Stakeholder Management
Desirable
* Experience in MOD / Defence Digital environments
* Networking
* Secure by Design Principles
* Service Architecture
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