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Our Staff Team


Ilyssa Tanchum

Ilyssa Tanchum

Ilyssa Tanchum joined Cause Effective in April of this year. With over a decade of experience in nonprofit development and donor services, Ilyssa is a dedicated and results-driven professional. She has a proven ability to manage and process gifts with impeccable accuracy, ensuring seamless revenue tracking and enhanced donor stewardship. At the Alzheimer’s Association, she meticulously interpreted gift intent and allocated revenue, leading to improved data integrity and processing efficiency.

Ilyssa’s tenure at the Crohn’s and Colitis Foundation saw her excel in financial management, donor relations, and event coordination, supporting successful fundraising campaigns and community engagement initiatives. Her organizational skills and attention to detail were also evident at Greenwich United Way, where she optimized office operations and managed comprehensive administrative and financial tasks.

Her experience extends to high-level executive support at the March of Dimes, where she provided essential assistance to senior leadership and coordinated significant projects and events. Ilyssa has consistently improved operational efficiencies and supported impactful fundraising campaigns. Her dedication to the nonprofit sector is not just professional but deeply personal.

ilyssa@causeeffective.org