Lumen is seeking a Principal Solution Architect to provide strategic and technical leadership across SAP BRIM, SAP S/4HANA, and enterprise financial platforms supporting billing, invoicing, accounts receivable, payments, collections, cash application, and cash accounting. The ideal candidate brings deep expertise in SAP BRIM, particularly Convergent Invoicing (CI) and FI-CA, along with extensive experience designing complex integrations across SAP and non-SAP ecosystems.