Nicholas Olsen

Early life Olsen was born on 26 September 1995 in Sydney, Australia. Olsen began his football career at Sutherland Sharks in their under-13 squad, before moving to Western Sydney Wanderers in 2012. He briefly trained in both club's first-team squads, including under Tony Popovic where he trained full-time. He soon joined APIA Leichhardt in 2015, following his release from the Wanderers that same year.

Club career Saigon FC In August 2022, Olsen joined V.League 1 side Saigon. He scored 5 goals in 11 appearances for the club before sitting out the remaining two matched of the 2022 V.League 1 season due to a wage dispute.

SHB Danang Following the conclusion of the 2022 V.League 1 season, Olsen signed with SHB Danang.

Becamex Binh Duong On 19 June 2023, Olsen joined Becamex Binh Duong for the remainder of the 2023 season. He was given the number 28 jersey.

Heidelberg United After his stint in Vietnam, Olsen returned to Australia having signed for Heidelberg United in the NPL Victoria for the 2024 season. He made 27 appearances and scored 2 goals for the club.

Maziya

In September 2024, Olsen headed abroad once more having signed for Dhivehi Premier League club Maziya.