[6] In 2019, Rambitan reached the final of the International Challenge tournament in Iran with Pramudya Kusumawardana, but was defeated to their compatriots Adnan Maulana and Ghifari Anandaffa Prihardika in straight game.

[16] In March European tour, they lost in the second round of Swiss Open,[17] but took their first tournament victory as a combination in the 2021 Spain Masters, beating fellow Indonesian pair Sabar Karyaman Gutama and Muhammad Reza Pahlevi Isfahani.

[35] They competed at the home tournament, Indonesia Masters, but had to lose in the first round from fellow Indonesian pair 1st seeds Fajar Alfian and Muhammad Rian Ardianto.

[38] In March, Rambitan and Kusumawardana competed in the All England Open but had to lose in the first round from 3rd seed fellow Indonesian pair Mohammad Ahsan and Hendra Setiawan.

[43][44] In late May, Rambitan and Kusumawardana competed in the second Asian tour at the Malaysia Masters, but had to lose in the first rounds from 2nd seed Malaysian pair Aaron Chia and Soh Wooi Yik.

[46] In June, Rambitan competed at the Singapore Open, but lost in the second round from 8th seed Malaysian pair Ong Yew Sin and Teo Ee Yi in straight games.

[47] In the next tour, he competed at the home tournament, Indonesia Open, but lost in the semi-finals from 2nd seed Malaysian pair Aaron Chia and Soh Wooi Yik in tight matches.

[48] In July, Rambitan competed at the Korea Open, but had to lose in the second round from 5th seed Japanese pair Takuro Hoki and Yugo Kobayashi in straight games.

[50] In early August, Rambitan competed at the Australian Open, but had to lose in the quarter-finals from 3rd seed Japanese pair Takuro Hoki and Yugo Kobayashi in straight games.

[51] In December, after his partner, Kusumawardana left the national team,[52] the men's doubles head coach, Aryono Miranat, decided to pair him with Rahmat Hidayat.