Assistant Manager, Client Development

Simpson Thacher serves as counsel and trusted adviser to the world’s most successful and innovative sponsors. This is a high-impact opportunity to partner with senior attorneys and Client Development & Engagement leaders, helping to showcase the Firm’s Investment Funds platform, deepen client relationships, and drive strategic growth. You’ll be part of a dynamic team that values initiative, collaboration, and intellectual curiosity—and you’ll work closely with colleagues across the Transactional practices and our global Client Development & Engagement organization. The Client Development & Engagement Funds Assistant Manager is responsible for supporting the Firm’s global client development initiatives for the funds practice by organizing and leveraging information about the Funds practice and lawyers, and providing research and analysis about clients, competitors, markets, trends and industries. This role assists Client Development & Engagement in ensuring work product, communications and critical functions meet the Firm’s high standard of excellence. The Assistant Manager operates with a high degree of independence and judgment, serving as a trusted advisor to partners and practice leaders on client development strategy, market positioning, and growth initiatives. This role is responsible for shaping priorities, integrating cross-practice efforts, and ensuring the Firm’s capabilities are presented clearly, consistently, and competitively to clients and the market. Responsibilities Practice & Sector Strategy Serve as a Client Development & Engagement lead for the Funds and Boston office initiatives and pitches Advise partners and practice leadership on client development strategies, market trends, competitive positioning, and growth opportunities across relevant practices. Support the integration of funds, registered funds, regulatory, M&A—into a cohesive offering. Support several client teams that have Investment Funds or Boston office senior partners Anticipate and proactively address the business development and client engagement needs of practice leaders and senior partners. Client Development & Growth Initiatives Lead the development of strategic pitches, proposals, and responses to RFPs for Investment Funds and related specialist areas, exercising judgment on positioning, messaging, and prioritization. Assist in coordinating Firm-sponsored events, presentations and event logistics, (e.g., formatting invitations, tracking RSVPs, and assisting with follow up) Partner with attorneys to develop tailored client strategies, relationship plans, and opportunity pipelines. Shape and oversee submissions for legal directories, rankings, awards, and surveys relevant to focus areas. Provide strategic guidance on client-facing materials, ensuring alignment with Firm priorities and consistent articulation of capabilities. Work with CDE team members to accurately maintain the Firm's engagement database and deals and case exp