Wong studied at Yu Chun Keung Memorial College and graduated after Form 5. He represented various youth levels of the national team.
Sham Shui Po
Wong joined Third Division club Sham Shui Po when he was young. In 2008, youth team members were all promoted to the club's first team in order to gain experience. In the first season, the club reached the final of Junior Shield, which they eventually lost 0–2 to Shatin. Wong Wai played 5 out of 6 games and scored a goal in the semi-finals.
In Wong's second season, he scored 12 goals throughout the season, including 3 goals in the promotion play-offs, which helped the club gain promotion to the Second Division.
Wong helped the club gain promotion to the First Division for the first time in club history by scoring 12 goals in 19 games in the 2010–11 season. In the 2011–12 season, he failed to help the team prevent relegation to the Second Division, although he featured in most of the matches.
After the conclusion of his contract, Wong once again followed Lee Chi Kin, this time to the newly promoted HKPL club Tai Po. He was revealed as a Tai Po player during the club's season kick-off event on 19 July 2016.[4]
On 17 July 2019, it was revealed that Wong had left Tai Po at the end of his contract.[5]
Eastern
On 27 September 2019, once again following Lee Chi Kin, Wong signed for Eastern.[6]
HK U23
Before the beginning of the 2021–22 season, the newly formed HK U23 announced that Wong joined the club on loan for the season as one of the over-aged players.
On 16 February 2013, Wong received his first call-up from the senior team for the 2015 AFC Asian Cupqualification against Vietnam.[8][9] However, he was excluded from the final squad announced on 15 March 2013.[10]
On 31 May 2013, Wong was included in the 20-men final squad for an international friendly match against the Philippines held on 4 June.[11] He made his debut during the match, as he entered in the 77th minute as a substitute for Leung Chun Pong.[12]
^"Archived copy". www.the-afc.com. Archived from the original on 20 January 2024. Retrieved 14 January 2024.{{cite web}}: CS1 maint: archived copy as title (link)
^"中國香港代表隊 – 決選名單" [Hong Kong, China Team – Finalists]. Hong Kong Football Association (in Chinese). 26 December 2023. Archived from the original on 18 January 2024. Retrieved 15 January 2024.