Maroof is a medical doctor who graduated from Imperial College London with dual degrees in Medicine and Business Management. During his training as a doctor, Maroof wanted to focus on the effects of smoking. In 2017 – as soon as he graduated – he founded Quit Genius, a gamified cognitive behavioural therapy application to help smokers stop. In 2018 he was listed by Forbes magazine as being one of the ‘30 under 30’ entrepreneurs. The app has since expanded to include alcohol and opioid addiction.