PJK International was founded by Pieter J. Kulsen. He has a commercial economic background and made a career in international oil trading before he started his own business. He worked for two major oil companies and two oil trading organizations. He worked in cities such as, London, New York and Hamburg. In 1978 he founded PJK International and in 1985 started to work full-time on his own. Eventually he specialized in the analysis and interpretation of market developments within the international petroleum industry.
Currently Pieter is associated to the company as an advisor.