Portland Thorns Shim signed with the
Portland Thorns as a discovery player for the inaugural season of the
National Women's Soccer League. She made her debut for the team during a match against the
Washington Spirit on May 4, 2013. She scored her first professional goal on June 16, 2013, at
Jeld-Wen Field in a match against
Seattle Reign FC. After receiving a through ball from teammate
Angie Kerr near the penalty spot, Shim finished with a left-footed shot past the goalkeeper. She also served her first assist during the match after stealing the ball off a bad pass and passing it to forward
Danielle Foxhoven, who was making a run into the left side of the penalty box. She was the Thorns' lone scorer in a 1–1 draw with the
Western New York Flash on July 14, 2013, which began a scoring streak in which she scored a goal in four consecutive matches. In 2015, Shim went on loan to
Japanese football team
Iga Kunoichi FC but did not appear in a domestic match. On January 10, 2014, it was announced that Shim was drafted by the
Houston Dash with the fourth pick in the
2014 NWSL Expansion Draft. She was traded back to the Thorns one week later during the
2014 NWSL College Draft.
Växjö DFF In 2017, Shim signed with Swedish side
Växjö DFF of the
Elitettan. She appeared in two matches as Växjö earned promotion to the
2018 Damallsvenskan.
Houston Dash Shim returned to the NWSL in 2018, signing with the Dash.
NJ/NY Gotham FC Shim signed a short-term injury replacement contract with
NJ/NY Gotham FC on June 25, 2023. One of her teammates was fellow
2021 NWSL abuse scandal whistleblower Sinead Farrelly. On August 9, 2023, Shim scored her first NWSL goal since 2015 in the 91st minute off an assist from
Midge Purce. ==Activism and post-playing career==