He passed the International Baccalaureate exams at United World College of the Atlantic in south Wales in Great Britain (1995).
He graduated Phi Beta Kappa and summa cum laude from Washington and Lee University (1999) with a Bachelor of Arts degree in philosophy, politics, and economics.
For ten years Golubiewski lived in Washington, D.C., working in business consulting and cooperating with NGOs, think tanks, and universities, including the Center for Family and Human Rights.
Golubiewski dealt with the regional policy of eastern Africa and the countries of the Indian Ocean, participating in trade negotiations with the ACP economic bloc.
From 2014 to 2016, he was the deputy ambassador of the European Union to the EU Delegation in Beirut, and its head of the political and media section.