Haui is an award-winning mixed-media artist who defies categorization. Haui's work explores themes of race, gender, and orientation, shedding light on stories often relegated to the peripheries of history while blurring lines between theatrical mediums. To date, Haui has worked as a director, designer, and deviser of new work for theatre, film, opera, and visual arts working for Canada's leading arts organizations, including the Canadian Opera Company, Stratford Festival, National Arts Centre, Shaw Festival, Canadian Stage, Luminato Festival, Black Theatre Workshop, and more.

Career highlights include directing his award-winning film Mixed↑ (MixedUp), produced by trans filmmaker Jack Fox and in association with outtv. eTalk Canada praised the film saying, "Mixedup is going to allow a lot of people to begin healing."

Recently Haui was associate director on the Toronto production of "Choir Boy" by Tarell Alvin McCraney. In 2023, Haui will direct "Private Flowers," an exploration of queer history produced by Toronto History Museums, supported by the National Ballet of Canada's open residency program and the Ontario Arts Council. Later this year, Playwright's Canada Press will also publish his writing/poetry as part of an anthology of works exploring black history. In 2024, The Canadian Opera Company will produce his operatic opus Aportia Chryptych: A Black Opera for Portia White supported by the National Arts Creation Fund.

Previously Haui was assistant director to Estelle Shook for the NAC sesquicentennial production of Harry Somer's opera Louis Riel. In addition, Haui has directed in the Stratford Festival Meighen Forum and Stratford Lab and was invited by the late Martha Henry to participate in the inaugural bud's program as part of the Michael Langham Directors program for classical theatre. Haui was also a recipient of Theatre Ontario's Professional Theatre Training program. Haui directed and composed his award-winning film "C'est Moi," an acclaimed film that explores the history of slavery in 18th-century New France and has since screened globally. In addition, Haui was the assistant producer to Métis/Déne filmmaker Marie Clements on her feature film debut, Red Snow, produced by CBC, Telefilm, and APTN.