Career
Prior to that position, Sumendap was the Department Director for the Sabbath School and Personal Ministries since 1996. Sumendap was elected to the office of the Executive Secretary in 2007 after Doctor G.T. Ng accepted the call to the General Conference Headquarters in Maryland, United States of America. His term was cut short due to his retirement.
However, during this short term, Sumendap"s office was involved in an extensive effort to trim down the church membership figures of the SSD. After coming to office, it became apparent to him that the current membership figures could not be the same with the real figures of church membership.
He then initiated the to identify the real figures of the church membership in SSD countries. The results was 300,000 church members were identified missing after the updated count.
Before his appointment as executive secretary, Pastor Sumendap was the Sabbath School and Personal Ministries Director of SSD from 1997. During his term as a department director, he played a major role in developing training programs for the 4 Phases of Leadership Certification for the church members.
As a church administrator, he has also been a church pastor, an editor, a departmental leader in the conference and union level, a college professor, a teacher, and elementary school principal.