Born in Malappuram, Kerala, Kuruniyan was the fifth child to a father who owned a shop and a mother who was a housewife.

[2][3] In order to help support his family, Kuruniyan dropped out of school when he was in the eighth standard and began work in his father's sugarcane shop.

[11] In July 2017, it was confirmed that Kuruniyan had signed a professional contract with Pune City and was retained by the club for their upcoming Indian Super League campaign.

[17] He scored his first goal of the season against Chennaiyin on 6 November, where Kuruniyan opened the scoresheet in the ninth minute, but eventually lost the match 2–4.

[24] Kuruniyan scored his debut goal for Bengaluru in the second leg of the semi-final in the fifth minute of the match on 8 March 2020, which they lost 3–1.

[26] In between the regular season, Kuruniyan made his continental debut in first leg match in the 2020 AFC Cup preliminary stage on 5 February 2020 against Paro FC, which Bengaluru ended up winning 0–1.

[33] Kuruniyan returned to the pitch with a facemask in the match against Mumbai City on 15 February 2021, which ended in a 2–4 victory for Bengaluru.

He made his debut for the club on 20 August against Rajasthan United at the 131st edition of Durand Cup as his team lost the match by 3–2.

[43] He got his senior national team call-up, when he was selected for the Indian squad for the 2018 Intercontinental Cup following his standout performance in the 2017–18 ISL season.

[44] He made his national debut in the opening match of the tournament against Chinese Taipei as a substitute for Halicharan Narzary on 1 June 2018, which ended in a staggering 5–0 victory for India.

[45] He also played in the final of the 2018 Intercontinental Cup against Kenya as a substitute for Udanta Singh on 10 June 2018, which India won 2–0, thereby winning the first edition of the Intercontinental Cup and helping Kuruniyan to win his first international title[46] Kuruniyan was in the squad to travel to Bangladesh for the 2018 SAFF Championship.