In Agile development, backlogs drive the work that teams perform. To make Systems Engineering relevant in Agile contexts, their efforts must continually influence and guide the work in those backlogs. This session shows how to put traditional Model-Based Systems Engineering (MBSE) and modeling practices into a Lean-Agile, SAFe context. We discuss a collaborative approach to requirements elicitation and system design that will simulate a Systems Engineering Workshop as part of the session. We also delve deep into the SAFe role of System Engineer/Architect and the Solution Intent construct to better understand how those roles and artifacts can effectively drive development for complex, engineered systems.