Munzer is a medical doctor by background and an orthopaedic by training. He graduated from Aleppo University in 2007 and obtained his specialisation certificate from the Syrian Board of Medical Specialities in 2017. He also holds an MSc in Health Policy, Planning and Financing from the University of London (LSHTM and LSE).

Following the onset of the Syrian conflict, Alkhalil co-founded several quasi-governmental health institutions and hospitals in northwest Syria, including the Idlib Health Directorate (IHD) and Alamal Hospital for Orthopaedic Surgery, both established in 2013. He led the IHD from 2013 to 2020.

With over a decade of leadership in conflict-affected health systems, Alkhalil has authored numerous papers on health governance, legitimacy, aid effectiveness, and the localisation and decolonisation of humanitarian aid in areas of limited statehood.

Beyond his work in the medical and research fields, Alkhalil has been actively engaged in social empowerment initiatives, constructing local councils, documenting war crimes and crimes against humanity, and running advocacy campaigns to stop attacks on health facilities and personnel in Syria.