Hwang played on the Japan Golf Tour and won his first title at the 2011 Gateway to The Open Mizuno Open.

This win earned him entry into the 2011 Open Championship[2] where he finished 71st.

Hwang ended his 2019 season with a T8 at the Golf Nippon Series JT Cup, his last event before starting mandatory military service.

Japan Golf Tour playoff record (0–2) Korean Tour playoff record (1–2) Asian Tour playoff record (0–1) CUT = missed the halfway cut Note: Hwang never played in the Masters Tournament or the PGA Championship.

This biographical article relating to golf in South Korea is a stub.