While studying at university, she worked as a radio broadcaster at the local Leiden broadcaster and as a freelance newsreader at
Omroep West after being discovered by them. Brantsen worked as an editor and newsreader at
Bureau Regio between August 2014 and January 2015. She got an internship at the domestic desk at
Nederlandse Omroep Stichting (NOS). Brantsen's final programme was on 25 July 2017, She moved to television and began reading the news on the morning edition of the daily news programme
NOS Journaal in August 2017. Brantsen was the replacement for
Rik van de Westelaken and continued to read news bulletins on NPO Radio 1 occasionally. In 2018, she and
Rob Trip co-presented the special documentary
Nonsens te kijken: Amber Brantsen on
fake news and hosted NOS's coverage of the
Wedding of Prince Harry and Meghan Markle that May. Brantsen began presenting the evening edition of
NOS Journaal on occasion in 2019, In February 2019, Brantsen began presenting a weekly podcast on
Formula One motor racing with the former racing driver
Jan Lammers and the reporter Louis Dekker, Bransten came up with the idea of the book in 2017 and in it, she disclosed that she suffered from the eating disorder
anorexia nervosa. She left NOS at the conclusion of November 2021. == Personal life ==