He began his career as an academic teaching German and English. Following Belarusian independence in the 1990s, Aleinik joined the foreign ministry of Belarus. In 1995, he embarked on his first diplomatic posting at a consul in
The Hague and later became the
chargé d'affaires in the
Netherlands. While in the Netherlands, he was promoted to the rank of ambassador and deployed to the
United Nations Office in Geneva with accreditation to the
Holy See and the
Sovereign Order of Malta. In
Malta, he was awarded the
Grand Cross pro Merito Melitensi of the Sovereign Order of Malta. In 2009, he was appointed deputy foreign minister of Belarus in charge of bilateral relations with African, Asian and South American countries with specific task to widen Belarusian diplomatic relations. During his term in office, he established diplomatic relations with
Nigeria,
Ethiopia,
Indonesia and
Brazil. In 2013, he is appointed Ambassador to the United Kingdom, with concurrent accreditation to Ireland as non-resident In December 2022, he was appointed Minister of Foreign Affairs of Belarus. On 27 June 2024, Sergei Aleinik was relieved of his post as Minister of Foreign Affairs and appointed as a member of the
Council of the Republic of the
National Assembly of the Republic of Belarus. == Notes ==