Federal Contracting Acronym
SEP
Systems Engineering Plan
Plain-English definition
The Systems Engineering Plan describes how systems engineering will be applied and integrated across a defense acquisition program. In federal practice, Systems Engineering Plan connects to how contracting officers, program offices, and industry teams interpret requirements, document decisions, and execute awards. Authoritative context is typically found in DAU materials and agency supplements where applicable. Contractors should trace how SEP appears in the specific solicitation or contract rather than assuming uniform usage across agencies.
Why it matters
Understanding Systems Engineering Plan (SEP) reduces misalignment during proposal preparation, contract performance, and compliance reviews tied to defense obligations.
Where you will see it
SAM.gov notices, contract clauses and attachments, DoD forms and supply systems when applicable, and internal capture or program management documentation.
Example in context
During a bid review, the capture lead notes SEP in the solicitation, assigns a subject-matter owner to confirm requirements, and records the decision in the compliance matrix.