In 2000, al-Naimi moved back to Qatar and took up a post as Director of Safety for the Hamad Medical Corporation (HMC). As part of her role at HMC, al-Naimi leads on their MENA-regional training on radiation safety. She has represented Qatar at a number of international meetings and conferences concerning radiation safety, including those led by the International Atomic Energy Agency and the United Nations Environment Programme. In 2013 she was President of the Qatar Medical Physics Society.