Platon began his career working for British Vogue and then for the late John F. Kennedy Jr.’s political magazine, George. While shooting portraits for a range of international publications, Platon developed a relationship with Time magazine, producing more than 20 covers. In 2007, he photographed Russian Premier Vladimir Putin for Time’s “Person of the Year” cover, which was awarded the World Press Photo Contest’s top prize.
In 2008, he became the staff photographer for the New Yorker and produced a series of large-scale photo essays, two of which won awards from the American Society of Magazine Editors. Platon's New Yorker portfolios have covered U.S. President Obama's inauguration, the U.S military, portraits of world leaders, and the Civil Rights Movement. Platon later partnered with Human Rights Watch to highlight human rights defenders from Myanmar as well as the leaders of the Egyptian revolution. Following his coverage of Myanmar, Platon photographed Aung San Suu Kyi for the cover of Time—days after her release from house arrest.