Hadir was born in Cairo, Egypt. She obtained her Bachelor’s degree in Biology with a minor in Chemistry at the American University in Cairo. Following her Bachelor’s, Hadir was awarded a Cancer Research UK studentship to conduct a four-year Ph.D. program at the Cancer Research UK Manchester Institute (CRUKMI) in the Cell Signalling group headed by Angeliki Malliri. During her Ph.D., Hadir focused on dissecting the molecular mechanisms dictating the biological outcomes mediated by the small GTPase Rac1, a key regulator of cytoskeletal rearrangements and cell migration. Stemming from her interest in small GTPases, Hadir joined the Dikic group as a postdoctoral fellow. She investigated the role of regulators of Rab GTPases in modulating autophagy. She also explored the interplay between cytoskeletal regulators and the trafficking machinery under normal and pathological conditions. She finished her work and moved on in 2018.