Having started his career at Orbit College in the SAFA Second Division, Saleng joined Free State Stars in 2019.
[4][3] Saleng signed for South African Premier Division club Orlando Pirates in July 2021, but spent the 2021–22 season on loan at Moroka Swallows, where he scored twice in 22 league appearances.
[6] Saleng was part of the South Africa squad at the 2021 COSAFA Cup, starting in the opening 1–0 victory against Botswana.
[7] In total, he made 6 appearances as South Africa won the tournament.
[1][8] In November 2022, Saleng was included in the South Africa squad for two friendly fixtures against Angola and Mozambique.