In 2007, Waki joined the animation studio Madhouse. After working with producer Yuichiro Saito at Madhouse, in 2011 he joined Mamoru Hosoda’s Studio Chizu as one of the founding members. At Studio Chizu, Waki was involved with projects such as ‘Wolf Children’ (2012), ‘Boy and The Beast’ (2015).

In 2016, Waki joined the animation studio Orange and worked on ‘Land of the Lustrous’ (2017) as Producer and since then as Chief Producer he produced ‘BEASTERS’ (2019) and ‘Godzilla S.P’ (2020). Waki is producing the upcoming ‘TRIGUN STAMPEDE’ (2023) for Orange.