Originally a radio jockey, Balaji is also active in other fields; he is known for his association with the television shows Ungalil Yaar Adutha Prabhu Dheva and Why This Kolaveri, and for his performance in the films Theeya Velai Seiyyanum Kumaru (2013), Vadacurry (2014) Naanum Rowdy Dhaan (2015), Pugazh (2016) and LKG (2019) (as an actor), Mookuthi Amman (2020) and Veetla Vishesham (2022) (as an actor and a co-director).

[6] Balaji told Sudhish Kamath in 2013 that he changed 27 houses and 11 schools while growing up in Chennai because his "mother just cannot stay in one place.

[4] After completing his BSc computer science from the Kumararani Meena Muthiah College of Arts in 2006,[7] Balaji joined the Amrita School of Communication in Coimbatore for a Postgraduate Diploma in Journalism,[8] because he wanted to become like his cousin who worked at NDTV, but when he was asked to write a report on his hostel's canteen, the 56-word report contained 47 grammatical errors, and he soon realised that English journalism was not what he was interested in.

[5][8] After four years he quit the job as he "didn't want to sound angry all the time" and returned to Chennai where his family and friends were living.

He joined at 92.7 Big FM because they gave him the freedom to plan and design his four-hour slot; thus the show Take it Easy was conceived.

[5] The evening prime-time show was created to give people a "break from the serious stuff that they have to deal with during work hours and relax with the nonsense".

Balaji created another segment in Take it Easy, titled Cross Talk, where he made prank calls to unsuspecting victims, nominated by a friend, cousin, co-worker or neighbour.

[11] On how the segment developed, Balaji said, "I was assigned to do a serious socially-relevant show in the beginning but Big [FM] gave me the chance to talk about anything in Take It Easy.

[31] In January 2015, Balaji, radio jockeys Girigiri, Ananthi, Mirdhula and actor R. Sarathkumar contributed to "Kodu Kondadu", an initiative by BIG FM and the non-governmental organisation BHUMI to supply impoverished children with stationery, toys and books.

[37][38] In January 2016, he won the Ananda Vikatan Awards for Promising Personality of Tamil Nadu and RJ of the Year.

[6] In September 2011, he judged Channel Surfing, a segment of Smaraneeyam, the inter-school cultural festival of Sri Sankara Senior Secondary School.

[43] Balaji was a performer at Sri Sivasubramaniya Nadar College of Engineering's annual cultural festival Instincts in March 2012.

[54][55][56] In Puthagam (2013), Balaji introduces the lead characters played by Sathya, Sanjay, Vignesh, Rakul Preet Singh and Aishwarya Rajesh in a voice-over.

He then appeared in Devi, Kadavul Irukaan Kumaru (2016), Parandhu Sella Vaa (2016), Kaatru Veliyidai (2017), Spyder (2017) and Kee (2017).

Balaji was a host in the second season of STAR Vijay's dance show Ungalil Yaar Adutha Prabhu Dheva.

[20][59] He was the host of Zee Tamizh's Why This Kolaveri, a loose adaptation of the American reality show Killer Karaoke, which premiered in December 2013,[60][61] and ended in May 2014.

[63] In December 2011, Balaji participated in "Namma Ooru Website Creation Competition", an initiative jointly organised by IIT Madras' Rural Technology and Business Incubator and the National Internet Exchange of India to disseminate village-specific information and create an identity for villages.

[1] In March 2014, he claimed to have been a presenter at Sangarsh, an annual charity concert that raises money for people suffering from various diseases.

[65][66] In November 2014, Balaji created "Panjumittai Productions", a YouTube channel where he uploads short videos dealing with contemporary issues.

[79] In January, Balaji was featured in "The Most Important Job", a four-minute video by the Murugappa Group that pays tribute to Indian farmers.

[5] Although he frequently talks about films on the radio, he never entertains gossip on the personal life of actors, due to his lack of interest in the same.

He is notorious for his attacks on the English language and his jocular criticism of Tamil films, but popular for his irreverent sense of unique humour.

[5] According to photographer Bhargavii Mani of The Hindu, the frequent echoing of the words "Ada" and "Cha" on Balaji's radio shows make them "exciting".