He started his career as a civil servant in 1960 and worked in various sections of the Afghan Ministry of Foreign Affairs.
From 1964 to 1969 Anwarzai worked as Second Secretary directly under the supervision of the late Ambassador Abdul Rahman Pazhwak.
In February 2002, immediately after the Bonn Agreement, Anwarzai returned to Afghanistan and was assigned to the Afghan Foreign Ministry as the Director of the Fourth Political Department responsible for European countries.
Until 2005 he was member of the Board of Directors of the Global Partnership for Afghanistan where he served as the Vice-President and the Chief Operation Officer.
[7] He then became the Head of United Nations Department at the Afghan Foreign Ministry, and as such attended the climate change negotiation in Barcelona- Spain in November 2009.