The successful candidate will define the end-to-end migration strategy and target architecture for transitioning core systems from a SaaS environment to on-premise infrastructure. This includes assessing the current SaaS-based setup, identifying dependencies, risks, and constraints, and producing a clear roadmap outlining the steps, sequencing, and technical considerations required to execute the migration successfully. The architect will work closely with engineering, infrastructure, security, and operations teams to ensure the proposed approach is technically sound, secure, and aligned with regulatory and operational requirements within financial services. They will also be expected to act as the primary technical point of contact for the migration, providing direction to delivery teams and ensuring stakeholders are kept informed of progress, risks, and key decisions throughout the engagement.