Wojciech Zajączkowski was born in Bydgoszcz in 1963. He attended one of the city’s primary schools and the Jan and Jędrzej Śniadecki High School no. 6. In 1982–1987, he studied history at the Catholic University of Lublin. In 1999, he was awarded a PhD at the Polish Academy of Sciences’ Institute of Political Studies.

In 1987–1988, he worked as a proofreader at the Archdiocese of Warsaw’s publishing house, and later as an editor at Ośrodek Dokumentacji i Studiów Społecznych (Centre for Documentation and Social Studies). He also became affiliated with the French National Centre for Scientific Research in Paris as a researcher. He was employed at the Res Publica publishing house in 1989–1991. In 1991, he became part of the Centre for Eastern Studies, and worked there until 1993. Subsequently, he joined the Stefan Batory Foundation as a director of the Forum for Central and Eastern Europe. Employed at the MFA since 1998. His experience includes postings at the Polish embassies in Moscow and Kyiv and leading the MFA’s Eastern Policy Department. In 2008, he was appointed the Prime Minister’s chief advisor on energy security. In 2008–2010, he served as the Polish Ambassador to Romania in Bucharest. In 2010, he became Poland’s Ambassador to Russia in Moscow, in office until 2014. In 2014–2018, he headed the Department of Strategy and Planning at the MFA. In 2018–2023, he was Poland’s Ambassador to China in Beijing. After his return, Wojciech Zajączkowski served as Deputy Director and then Director of the MFA’s Asia–Pacific Department. From 2024, he was simultaneously in charge of the Eastern Department.

Author of around 70 published works, mainly on Eastern Europe and methods of analysis.

Undersecretary of State Wojciech Zajączkowski coordinates policy towards Africa, the Middle East, Eastern Europe, and Latin America supervising the relevant MFA departments. He acts as the National Coordinator for International Development Cooperation and supervises the Department of Development Cooperation.