The Deputy Director will manage a portfolio of major donors and prospects while helping lead the organization's broader business development efforts, including drafting, reviewing, and shaping concept notes, proposals, capacity statements, one-pagers, and other donor-facing materials tailored to current and prospective supporters. The Deputy Director oversees coordination of day-to-day operations, workflows, and cross-functional planning across the Strategic Growth and Engagement division, including the business development, philanthropy, and communications functions, tracking progress against priorities and deliverables, and helping to strengthen team systems and collaboration.