Hilbrand, born as Jeong, Woon Seok (정운석) in Korea was raised as Dutch person due to his adoption but he always felt estranged from something essential, which he later discovered as existential.
He studied Human Resources Management and Labor Sociology in Groningen and Amsterdam. He worked many years as an international HR Professional for international renowned companies such as, Royal Friesland Foods, KLM, ING Bank, France Telecom and was interim director and manager for Private Schools in the Netherlands.
In 2003 he was introduced to the field of Systemic Work and Constellations and was directly taken by its depth and content since. He studied in Germany under guidance of Wolfgang Könighaus (1953 – 2010) who became his teacher. In 2009 Hilbrand started being active in this field of Systemic Consciousness and fast became one of the prominent teachers in this field in the Netherlands.
Hilbrand works with families, private persons, organizations and leaders with courage. He is a much asked counselor when it comes to issues of importance and sense of sensitivity.