Krupin began performing in community theatres at a young age, and became a 5-time gold medalist and Adjudicators’ Choice at the Northwest Music Festival for her performances. StageSceneLA named her Best Featured Actress In A Musical in 2009 for her performance as Anita in West Side Story and Breakthrough Star of the Year in 2010 for her performances in Bark! The Musical, NeverWonderLand, Janet Krupin at Sterlings Upstairs At Vitello's, and Urinetown (USC). In 2010, she won the LA's Next Great Stage Star competition. Shortly after earning her degree at USC, she was cast in the world premiere production of
Bring It On the Musical with music and lyrics by
Lin-Manuel Miranda,
Tom Kitt, and
Amanda Green and book by
Jeff Whitty in a lead role, Kylar.
Bring It On the Musical premiered at the Alliance Theatre in Atlanta, GA on January 16, 2011, with an opening night of January 28, 2011. It closed on February 20, 2011. In June 2011, Krupin was named the original host of Teen.com's web-series the Click Clique. After hosting more than twenty episodes of the Click Clique, Krupin briefly left in September 2011 to rehearse for the First National Tour of
Bring It On the Musical in New York. While in New York, she continued to contribute remote guest segments. She returned in October 2011 to finish off the first season of the Click Clique as the
Bring It On the Musical National Tour opened at the
Ahmanson Theatre in Los Angeles on November 11, 2011. After a five-month tour of the US and Toronto, Canada,
Bring It On the Musical transferred to the
St. James Theatre on Broadway, where Krupin was one of a record-breaking 30 performers making their Broadway debuts. Just prior to the Bring It On closing, Krupin was cast as the Dance Captain and a Standby for the roles of Heather Stovall and Kelli Mangrum in the Broadway production of
Hands on a Hardbody, a new musical with book by
Doug Wright, lyrics by
Amanda Green, and music by
Trey Anastasio and Green. It played at the
Brooks Atkinson Theatre from February 23, 2013, to April 13, 2013. Krupin later appeared in
David Cross's feature film directorial debut,
Hits, in the role of Megyn after booking the role based on a video taped submission. Hits premiered at the
Sundance Film Festival in Park City, UT on January 21, 2014. Krupin was last seen on Broadway as a swing and understudy for the role of Elena alongside
Idina Menzel in the Broadway musical
If/Then with book and lyrics by
Brian Yorkey and music by
Tom Kitt.
If/Then played its pre-Broadway premiere at the
National Theatre in Washington, DC from November 5, 2013, though December 8, 2013. It played at the
Richard Rodgers Theatre, where it began performances on March 5, 2014, prior to a March 30, 2014 opening. If/Then played its final Broadway performance on March 22, 2015. On July 26, 2014, Krupin released her debut EP, Aurora EP, which she recorded with collaborator Alex Caraballo under the name of Trillium. From January 27, 2015, through December 18, 2015, Krupin joined the short-run podcast, Backstage with the EDM Assassins where she joined Grant Austin and Nick Pesavento to discuss everything about
Electronic dance music. From August 7, 2015, through August 30, 2015, Krupin was seen as Maureen in the Uncompromising Artistry Productions presentation of
Rent at the Edinburgh Festival Fringe in Edinburgh, Scotland. Krupin's If/Then castmate,
Anthony Rapp, who originated the role of Mark Cohen, served as a creative consultant for this production. On October 7, 2016, Krupin released the solo single "Hipster Pinup" on iTunes, Amazon, and other digital music services. Included with the lead track "Ghosted" are "Bradshaw" and "I Don't Wanna." In 2023, Krupin starred in the musical Lydia and the Troll, which debuted and Seattle's
Seattle Rep theater. In 2024, Krupin starred in the indie film Sunset Road, a queer take on Romeo and Juliet. ==Controversies==