Marawan has been a member of the pharmacology department staff at Egypt's National Research Center (NRC). His primary focus has been on repurposing therapeutics and conducting preclinical and clinical research to address diseases common in Egypt. He is skilled in pharmacology, laboratory work, animal modeling, statistics, scientific teaching, and scientific writing. In addition, he has contributed to clinical trials and the development of the COVID-19 vaccine, and he has held various roles within the medical division of the NRC. His social contribution to the general public increased due to his participation in multiple radio, television, and YouTube videos that aimed to increase people's knowledge of nutrition and health. Furthermore, Marawan received a certificate of completion from King's College in London, England, for excelling in their Clinical Development Modules and achieving first place. Thereafter, Marawan possesses preclinical and clinical studies skills, as well as extensive statistical analysis expertise. He used to work in diabetes, cancer, and epilepsy. Additionally, He is now conducting research at the Indiana University School of Medicine, focusing on the mechanisms of epileptogenesis following traumatic brain injury in rodent models or or hippocampal injection of an epileptogenic drug. Using live brain imaging to study inflammatory mediators and bioluminescence via IVIS and EEG recording. Hopefully, these findings will help uncover the paradigm of epilepsy.