Major FunctionThe Development Officer will manage a portfolio of individual and family donor relationships to secure significant philanthropic support for WWF-US’s strategic priorities. This role focuses on cultivating, soliciting, and stewarding donors through a relationship-based approach, contributing to sustained revenue growth and long-term donor engagement.Key ResponsibilitiesManage a portfolio of donor relationships: Manage a portfolio of approximately 75–100 individual and family relationships, prioritizing donors with capacity and inclination to give at the $100K+ level.Develop and execute donor strategies: Develop and implement individualized engagement strategies to cultivate, solicit, and steward donors in alignment with WWF’s fundraising priorities.Performance will be measured based on:Financial goal: Achieve and maintain a three-year rolling average of $1M–$2M in new and renewed philanthropic revenue, with a focus on securing and growing gifts at the $100K+ level.Engagement goal: Maintain an average of 8-10 meaningful interactions per year with each assigned donor or qualified prospect, encompassing cultivation, solicitation, and stewardship activities.Proposals: Submit at least 12–18 tailored proposals or solicitations annually, with an emphasis on securing major gifts of $100K and above.Pipeline development: Demonstrate consistent progress in identifying, qualifying, and advancing new prospects, with a focus on building a pipeline of $100K+ opportunities.Portfolio management: Ensure effective stewardship, timely follow-up, and accurate documentation of donor engagement in CRM.Collaboration: Partner with colleagues across Development and program teams to align donor strategies and support broader fundraising goals.Support programmatic alignment: Work closely with program staff and leadership to align donor interests with WWF’s highest-priority initiatives and funding opportunities.Contribute to team goals and culture: Actively participate in team strategy discussions, contribute to a collaborative fundraising environment, and support shared learning and best practices.Other duties as assigned.