On coming back to Palestine in 2003, Dr Abu Yunis has actively participated in the establishment of the Dental School at Al-Quds University and the graduation of the first class in 2005.
After that, Dr Abu Yunis has been appointed as the head of the Maxillofacial Department for four years since 2006 until he was posted as the Dean of the Dental School in 2009, which had expanded the possibilities for him to work hard and develope all the academic and adminstrative aspects of the dental school during three years of continous serious efforts base on team work spirit and collective performance.
In the period 2012-2017, and besides being the head of Maxillofacial Surgery Department, he worked as a member of the General secretariat of the University Councils and obtained more academic and adminstrative experiance during this period.
Dr Abu Yunis is also an active member of the Palestenian Medical Councel since 2006, and he has particpated in many of its committees as the Higher Scientific Committee, Specialized Committee of Oral and Maxillofacial Surgery, Internship Committee and the Specialized Committee for Hospital Evaluation.
He was also appointed as amember of high certificate accreditation committee at the Ministry of Higher Education between 2014-2016. In addition, he is a member of the Examination Committee of Maxillofacial Surgery at Arab Board for Medical Specialities as a represntative of Al-Quds University and Palestine.
Regarding community services and social work, Dr Abu Yunis is an active member of Palestenian and Jordanian Dental Associasions, and he was elected as the secretary general and vice-president of the Palestenian Society of Maxillofacial Surgeons for five years and vice-president of the Cleft Lip and Palate Society for two years.
In addition, Dr Abu Yunis is a well-known speaker and active member of scientific committies in various local and international conferences.
As an Associate Proffessor in Maxillofacial Surgery, Dr Abu Yunis teaches several clinical courses in Anesthesia, Oral and Maxillofacial Surgery, Oral Medicine, and Medical Problems in Dentistry for dental students.
And he has more than ten published articles in different fields of maxillofacial surgery, oral medicine, and implantology.