Before MacArthur, Sayiddah worked at J.P. Morgan and the Ford Foundation advancing impact and financial returns through investments in private equity funds. Sayiddah has worked at Harvard Business School as a Senior Researcher and at Related Companies as a real estate investor. She started her career as a building façade consultant, advising real asset owners, and managing construction projects in New York City and Chicago. She holds an MBA from Harvard Business School and a Bachelor of Architecture from the Illinois Institute of Technology. She is a board member of the International Contemporary Ensemble.
