Harleen made her debut in domestic cricket, representing Himachal Pradesh in age-group tournaments. Her performances at the junior level showcased her potential as both a skilled batter and a handy off-spin bowler.

Deol made her international debut for the Indian women's cricket team in a T20I against South Africa in September 2019. Her ability to contribute with both bat and ball made her a valuable asset for the team. One of Harleen's notable performances came during a T20I match against England in 2019. She showcased her all-round abilities by scoring crucial runs and taking wickets, earning praise for her match-winning contribution.

Harleen Deol is known for her versatility, contributing in multiple facets of the game. Her right-handed batting style, combined with her off-break bowling, adds balance to the team and makes her a promising all-rounder.