MUMBAI: Shukla's television debut has been a pretty distorted one as he was not a very prominent figure initially.
In 2008, he made his acting debut with the lead role as 'Shubh Ranawat' in the television show Babul Ka Aangann Chootey Na on Sony TV, opposite lead actress Aastha Chaudhary. However, the show ended in February, 2009.
In the same year, he appeared as the lead actor 'Veer Vardhan Singh' in Jaane Pehchaane Se... Ye Ajnabbi on Star One, opposite Sanjeeda Sheikh and Aditi Tailang as the female leads. The show ended in September, 2010.
After that, he also appeared in a few episodes of anthological horror series - Aahat.
In 2011, he appeared as 'Rahul Kashyap' in Star Plus' Love U Zindagi opposite Pavitra Punia, which was inspired by the Bollywood movie Jab We Met. This series ended in July 2011.
Later that year, he also cameoed in an episode of Sony Television's C.I.D.
In 2012, Shukla got his breakthrough role in the character of 'District Collector Shivraj Shekhar', opposite Pratyusha Banerjee and Toral Rasputra in one of the most popular TV serials - Balika Vadhu. It was through the portrayal of Shiv that he earned widespread recognition and popularity, including several awards and nominations like the 'GR8! Performer of the Year (Male)' award at the Indian Television Academy (ITA) Awards. However, he left the show midway in 2015 as his character 'Shiv' died while fighting against terrorists.
In 2013, Shukla participated in the celebrity dance reality show Jhalak Dikhhla Jaa 6 and got eliminated in the 11th week. Reportedly, Shukla was noted as an eminent figure during this show by Karan Johar, which landed him into signing a '3-film-deal' with Dharma Productions.
Consequently, Shukla made his Bollywood debut in a supporting role in the rom-com movie Humpty Sharma Ki Dulhania (2014). He played the character of Angad Bedi, an NRI doctor and the fiancé of the female protagonist, which was played by Alia Bhatt. The film earned him an award for 'Breakthrough Supporting Performance (Male)' in the 2015 Stardust Awards.
In 2014, Shukla hosted Savdhaan India by introducing stories of common people who fought against crime.
In 2015, he hosted India's Got Talent 6 along with comedian Bharti Singh.
In 2016, Shukla won the stunt reality show Fear Factor: Khatron Ke Khiladi 7. In the same year, he hosted India's Got Talent 7 again with Bharti Singh. Later that year, Shukla made his debut in the Kazan entertainment industry by appearing as 'Mr. Chakraborty' (an Indian businessman) in a Kazakhstan movie - Business in Kazakhstan.
In 2017, he played 'Parth Bhanushali' in Dil Se Dil Tak with co-stars Rashami Desai and Jasmin Bhasin. The series was inspired by the Bollywood movie - Chori Chori Chupke Chupke.
Coming to his mainstream showbiz fame, Sidharth participated in the reality show Bigg Boss 13 (2019) and he was declared as it's winner in February 2020. Ormax media rated Shukla to be the most popular contestant of Bigg Boss 13, ranking him as number one throughout 20 weeks. He was voted the 'most favourite contestant of Bigg Boss 13' in polls conducted by Hindustan Times, India TV News and The Times of India. He was the most tweeted contestant of Bigg Boss 13. Shukla also won the Bigg Boss #AsliFans contest on Twitter (that was conducted by Voot) by procuring the highest number of tweets amongst all the other contestants with the hashtag #SidharthKeAsliFans.
In 2020, after winning Bigg Boss 13, Shukla appeared in two music videos - 'Bhula Dunga' with Shehnaaz Gill (his Bigg Boss co-contestant) and 'Dil Ko Karaar Aaya', opposite Neha Sharma.
By the end of 2020, Shukla entered the house of Bigg Boss 14 as one of the 'Toofani Seniors', along with Hina Khan and Gauahar Khan, for the first two weeks. Ormax media again rated Shukla to be the most popular housemate of Bigg Boss 14 till he was inside the house as a senior.
Post exiting the Bigg Boss 14 house, Shukla reunited with Shehnaaz Gill for another music video 'Shona Shona'.
Lately, Shukla is gearing up for his OTT debut by appearing as 'Agastya' in the third season of the web series Broken But Beautiful, opposite Sonia Rathee. The series is planned for release in 2021 on ZEE5 and ALTBalaji. Reportedly, Shukla will collaborate with Shehnaaz Gill for their third MV that's titled 'Habit'.