Dima Kayed was raised in Dhahran, Saudi Arabia, and attended boarding school in the United Kingdom before moving to the United States for university. She received a Bachelor's degree in biology from Saint Mary's College in California. She then moved back to Dhahran and worked in a microbiology lab for a few years before relocating to Jordan where she taught at the Applied Science University for eight years.
Dr. Kayed then returned to the United States where she obtained a PhD in microbiology/immunology from the University of Arizona. After graduation, she moved to Phoenix and worked at Blood Systems Incorporated, a blood banking facility, as a clinical specialist in the virology department for four years. During this time, she also taught microbiology, anatomy and physiology at Chandler-Gilbert Community College.
In 2008, Dr. Kayed joined King's Academy as a biology teacher in the Department of Physical and Life Sciences and in 2013, she was named head of that department. In 2017, Dr. Kayed was named associate dean of faculty.