A youth goalkeeper in Hamkam, he trained with the senior team for the first time in 2015.[2] He made his Hamkam debut in the 2015 2. divisjon against Rødde, and his cup debut in 2017 against Nybergsund, where Hamkam lost via penalty shootout. He was loaned out to Nybergsund in 2018, then Asker in 2019, playing for these clubs in the cup and the 2. divisjon.[3]
Jendal fully committed to football after finishing upper secondary school, and in 2020 he finally became the first-choice goalkeeper of Hamkam. Starting in the fall of 2020, Hamkam prioritized to loan or acquire a series of other goalkeepers, leaving Jendal on the bench again.[2] In the entire 2021 season, Jendal was loaned out to his third Second Division club, this time Arendal. Meanwhile, Hamkam won promotion to the 2022 Eliteserien.
Jendal worked at a steady pace and was allowed to make his Eliteserien debut in October 2022,[2] remaining the first-choice goalkeeper throughout 2022. He managed one clean sheet. That meant he also signed a new contract until the end of 2024, entailing better economic conditions.[4][5]
In 2023, Hamkam signed yet another goalkeeper Marcus Sandberg, with Jendal making his first appearance that season after Sandberg was sent off. Sandberg returned, but sustained an injury which led Jendal to play most of the games in the summer.[6]
Ahead of the 2024 season he decided to leave Hamkam, and signed for second-tier club Sogndal.[7] According to Sogn Avis, the first half of the 2024 1. divisjon entailed both "high peaks" and "somewhat tougher experiences" for Jendal.[8]