The Design Specialist will own communities undergoing copper retirement, with end-to-end responsibility for ensuring every circuit has a clearly defined migration path to fibre. This role involves analyzing and managing multiple circuits per portfolio, building scalable frameworks for circuit-level migration, and triaging issues when circuits fall out using address-level and system data. The specialist will create and maintain comprehensive community migration plans and work cross-functionally with network engineering, access planning, construction PMO, and customer-facing migration teams to translate network data into executable build and migration strategies.