[3] Kilponen began her senior career in Naisten SM-sarja, the highest level women's hockey league in Finland, in 2009 with the Tampereen Ilves.

She played with the Fighting Hawks for two seasons, serving as an alternate captain in 2016–17, until the women's ice hockey program was cut by the university in March 2017.

She and defensive partner Reettu Kulhua led all Ilves defenders in points that season and she was selected to the 2021 Naisten Liiga All-Star team.

She notched three goals and eight assists in seventeen games before departing the league to rejoin the KRS Vanke Rays for the later part of the 2021–22 ZhHL season.

She signed with the ZSC Lions Frauen of the Women's League (SWHL A) in late July, becoming one of the first former PHFers to find a new team after the voiding of PHF contracts.

[11] On 20 November 2023, after playing twelve games and recording three goals and four points with the ZSC Lions, it was announced that Kilponen would not continue the season with the club for personal reasons.