In 2009, Shimakawa started his professional career at Vegalta Sendai but never ended up making an appearance for the club.

He made his debut whilst on loan at JFL club Blaublitz Akita in the 2012 season.

Moves to a number of clubs followed and Shimakawa played in the top-flight of Japanese football for Ventforet Kofu, Oita Trinita and Sagan Tosu.

In 2024, he joined J2 League club Tokushima Vortis but announced his retirement just two months after the start of the season in April.

This biographical article related to a Japanese association football defender born in the 1990s is a stub.