Nasrallah founded the regional boutique advisory firm deNovo Partners in 2010, where she advises regional sovereigns, corporates, family groups, and private equity funds on intra-regional and cross-border corporate sales, acquisitions, mergers, and capital raises. She is also ADNOC’s in-house independent financial advisor on international acquisitions. In 2022, she advised James Murdoch and Uday Shankar’s Bodhi Tree to secure a $1.5 billion investment in digital media and digital education in India from the Qatar Investment Authority. Before deNovo, she worked at Morgan Stanley for 15 years in New York, Hong Kong, London, and Dubai.