Early in her career Stevenson worked in product management for the Kellogg Company, including as Category Brand Manager for Children's Cereal, Kellogg's Produits Alimentaires in France.[5]
Stevenson joined the Foreign Service in 1992. Her international assignments have included Beijing, Hong Kong, Mexico City and Bangkok. She served as the assistant press officer for e-media at the United States Embassy Bangkok from 1994 to 1997, assistant cultural officer for economic affairs at the United States Embassy Mexico City from 1998 to 2000, spokesperson and press officer at the United States Consulate General Hong Kong from 2002 to 2006,[6] and spokesperson for the United States Embassy Beijing from 2006 to 2010.[7] She assumed her post as United States Consul General in Chiang Mai, Thailand, from 2010 to 2012. Stevenson served the State Department in senior positions for the Under Secretary of State for Public Diplomacy from 2014 to 2016 and in the Bureaus of East Asian and Pacific Affairs as Deputy Assistant Secretary (for Public Diplomacy) from 2012 to 2014.[8] She then served as Principal Deputy Assistant Secretary in the State Department's Bureau of Public Affairs.[4]
Stevenson was nominated by President Donald Trump on September 13, 2018, and was confirmed as ambassador to the Republic of Equatorial Guinea on January 2, 2019.[4] She left her post in September 30, 2021.[9]
Stevenson joined the Bureau of Intelligence and Research as the Principal Deputy Assistant Secretary in October 2021. [9]
She is Chargé d'Affaires Burma since July 10, 2023.
^"史雯珊简介" [Brief Introduction for Susan Stevenson]. China Daily. January 29, 2008. Archived from the original on July 24, 2020.
^""不仅展示优点,也展示缺点" 美国副助理国务卿史雯珊谈公共外交" ["Not only to show the advantage, but also the disadvantage", A Discussion on Public Diplomacy by U.S. Deputy Assistant Secretary Susan Stevenson]. Southern Weekly. April 18, 2014. Archived from the original on June 7, 2016.