Sasha Krstanovic is a chartered mechanical engineer and a fellow of the Institution of Mechanical Engineers and Chartered Institution of Building Services Engineers. She has over 25 years’ experience working for international construction consultancies, and was named Building Performance Engineer of the Year 2021 by CIBSE. Sasha’s work focuses on low energy and zero carbon design and, in 2020, she founded mstep, an environmental and MEP engineering design and advisory practice. She currently works as a UN technical representative on the renovation of the UN HQ in Geneva.