Dr. Hayaatun Sillem CBE FIET (née Is’harc) is the chief executive officer (CEO) of the Royal Academy of Engineering.

[4] She completed a PhD funded by Cancer Research UK at University College London in 2002 investigating the JAK-STAT signaling pathway supervised by Ian M.

[14] The report identified the capacity needs of engineering that are felt across Sub-Saharan Africa, and developed approaches to meeting these needs.

[19][20] In May 2016, Sillem was appointed Director of Strategy and Deputy Chief Executive of the Royal Academy of Engineering.

[23] She spoke at the launch of Angela Saini's book Inferior: How Science Got Women Wrong and the New Research That’s Rewriting the Story in June 2017.

[36] Sillem was appointed Commander of the Order of the British Empire (CBE) in the 2020 New Year Honours for services to international engineering.