• Lead and coordinate the development of high-impact proposals (RFPs, RFIs, and white papers), ensuring clarity, compliance, and alignment with customer objectives • Partner with technical teams, engineers, subject matter experts, and leadership to identify, qualify, and pursue high-value opportunities aligned with Sphinx’s strategic priorities • Support capture and bid/no-bid decision making by analyzing solicitation requirements, customer needs, competitive landscape, and mission fit • Translate complex software, aerospace, and mission capabilities into persuasive, customer-focused proposal narratives and value propositions • Design and manage proposal response structures, schedules, workflows, and responsibilities to meet submission deadlines while maintaining high quality and accuracy • Ensure all proposal responses adhere to solicitation requirements, internal standards, and proposal best practices • Contribute to win strategies, solution positioning, and competitive analysis in support of mission-critical opportunities • Build and scale repeatable proposal and capture processes to support business growth in the defense sector