Okada started off in the anime industry as a production assistant for Zoids: Genesis in 2005 at Group TAC.
[1] Over several years, Okada worked to this capacity, and in 2007 was promoted to production manager on Nenbutsu Monogatari (released in 2008).
For the next 4 years, he participated in a number of Shaft productions as an episode director and storyboard artist, and in 2016 made his debut as a series director with the studio on March Comes In like a Lion under Akiyuki Shinbo's direction,[3] which received positive reviews from critics.
[4][5] Okada occasionally works with other companies, but a majority of his output continues to be with Shaft.
In an interview between him and Shaft colleague Hajime Ootani, the two were asked to describe each other's styles and processes as directors.