Shantanu's impressive dance skills earned him widespread recognition, leading to his victory in Fear Factor: Khatron Ke Khiladi 8.

Maheshwari began his acting career with Dil Dosti Dance[4] for Channel V. He rose to fame by essaying the role of Swayam Shekhawat during the four-years run of the show.

[5] His chemistry with co-star Vrushika Mehta earned him widespread adulation as they went on to win the third spot in the Hottest Indian TV Jodi list by the UK-based newspaper Eastern Eye.

[10] He returned to the small screen with his Dil Dosti Dance co-star Vrushika Mehta in Yeh Hai Aashiqui on Bindass, playing an episodic character of a verbally-challenged law student.

[13][14] The finite series, which had appearances by the likes of Jaja Vaňková and Terence Lewis, showcased the formation of his crew Desi Hoppers and their subsequent victory at World of Dance 2015.

The crew was invited to give a special performance on America's Got Talent 11 and received praise from the judges Simon Cowell, Heidi Klum and Nick Cannon.

Maheshwari participated in Fear Factor: Khatron Ke Khiladi 8 which was shot in Spain and hosted by Bollywood director Rohit Shetty.

Among the twelve dance crews that participated in the competition, Desi Hoppers came 3rd in the showcase rankings and were a part of the top 4 finalists that advanced for the face-off round.

They received high praise from judges Jennifer Lopez, Ne-Yo and Derek Hough who loved their unique style and fusion of hip-hop with Indian culture.

Shantanu also appeared in a promotional video by Netflix for The Umbrella Academy (TV series) with Tiku Talsania, Supriya Pilgaonkar and Kubbra Sait.

It co-stars Avneet Kaur and Vietnamese actress Kha Ngan, directed by Rahhat Shah Kazmi and produced by Omung Kumar.