An Indonesian Citizen who was born in Makassar, on the 14th of November 1965. Hadjar achieved an Engineering Degree from Universitas Diponegoro and a Master’s Degree of Engineering of Science from the University of New South Wales.

He officially serves as Director of Human Capital Development at WIKA based on the decision of the EGMS on August 5, 2022. Based on the resolution of the Annual General Meeting of Shareholders on May 4, 2023 he serves as Director of Human Resource Management and Transformation. Previously, he served as Head of the Business Development Division of PT Pembangunan Perumahan (Persero) in 2016 - 2018 and Director of Human Resources and System Development of PT Waskita Karya (Persero) in 2018 - 2022.