Primarily a midcourt player, Langman is a former captain and vice-captain of the New Zealand national netball team (nicknamed the Silver Ferns).

In 2003, she made her elite netball debut with the Waikato Bay of Plenty Magic in the National Bank Cup, and later that year was selected for the Silver Ferns.

Langman's decision to play for the Sunshine Coast Lightning in 2017 meant she was, amidst some controversy, not eligible to represent the national team.

[1] Although normally a wing defender, Langman became increasingly shifted into different areas of the midcourt to cover gaps left by injured players or personnel changes.

[11] In 2009, she earned her 50th test cap against England at the age of 23,[11] and won a gold medal with the Silver Ferns at the 2009 World Netball Series in Manchester.

In 2017, Langman moved to the Sunshine Coast Lightning, a newly created team in the Australian Super Netball league, where she was instrumental in winning the club's first premiership.

[16] In total Langman played more than 225 national league games across four clubs, the Waikato Bay of Plenty Magic, Northern Mystics, New South Wales Swifts and Sunshine Coast Lightning.