He established himself in the Blue Bulls U19 squad that participated in the 2014 Under-21 Provincial Championship, appearing in all fourteen of their matches in the competition and starting thirteen of those.

He scored tries in their matches against the Sharks U19s[1] and the Western Province U19s[2] to help the Blue Bulls finish top of the log to qualify for the semi-finals.

[16] He then played for the Blue Bulls U21s in the 2015 Under-21 Provincial Championship Group A, but was also named in the senior squad for the 2015 Currie Cup Premier Division.

[22] He made his senior competitive debut for the province in their 2021–22 Champions Cup round 2 fixture at home to French side Castres on 18 December 2021, coming on as a replacement for Jean Kleyn in Munster's 19–13 victory.

[24] Jenkins returned from the run of injured to make his United Rugby Championship debut for the province in their 51–22 home win against Italian side Benetton in round 14 on 25 March 2022, coming on as a 63rd minute replacement for Alex Kendellen.