Josh Goot was born in Sydney in 1980. After finishing school at Moriah College in 1997 he began a communications degree in media, arts and production at the University of Technology Sydney, where his interest in fashion design took hold. After a year he deferred to travel through Europe and the Middle East.

His first label, Platform, founded in 2000 with a friend, began as a printed T-shirt line and grew into a youth streetwear collection before closing in 2004. In early 2005 he launched the label under his own name with a capsule of unisex tailored jersey essentials in grey marl and a "futuristic" silver.

The debut was an immediate success. In 2005 it won the Tiffany & Co. Designer of the Year Award at the Melbourne Fashion Festival and the Prix de Marie Claire for Best Up-and-Coming Designer, and that May he showed at Australian Fashion Week. Women's Wear Daily put his work on its cover for its marriage of traditional tailoring and the American T-shirt. In September 2006 he showed in New York at the Matthew Marks Gallery, and in 2008 he moved to London at the invitation of the British Fashion Council to show at London Fashion Week.

The financial crisis hit the business, and in 2009 he returned to Australia to concentrate on his home market, developing new textile techniques in his Sydney studio. In 2010 he opened his first store in a converted gallery on Glenmore Road, Paddington; in 2011 he signed with David Jones, opening its Autumn/Winter 2012 launch with a tuxedo worn by Miranda Kerr; and in 2012 he moved to Oxford Street, in a space designed with architect Andy McDonnell. A Melbourne store followed in 2013.

Goot's aesthetic rests on modernity and sport: clean lines, technical and bonded fabrics, silk and Australian merino wool, for which he has acted as an ambassador. "What I wanted to do with the label was to create a modern, urban, Australian fashion brand," he said in 2013, "born out of these core ideals of modernity, modernism and a sense of sport." In 2007 he was among the first Australian designers in the Designers for Target programme, and in 2010 he worked with Sydney Dance Company and artist Jonathan Zawada on the print-based costumes for Rafael Bonachela's 6 Breaths.

In February 2015 the company entered voluntary administration, citing difficult trading conditions across the industry. Five weeks later creditors voted to return it to Goot, and the label marked its tenth anniversary at the Melbourne Fashion Festival's Grand Showcase. "It's kind of like putting up your hand and saying the company needs help," he told Broadsheet. In 2016 he moved the business to New York.

There, with his partner, the stylist and Vogue Australia fashion director Christine Centenera, he founded Wardrobe.NYC, launched at the end of 2017, and closed his namesake label to commit to it. The new business inverted the fashion system he had known: logo-free, Italian-made essentials in mostly black and white, sold online only in packs of four or eight pieces. Goot told Business of Fashion that he would not have arrived at the model without the experience of his first label, citing wholesale and long development cycles as the flaws that make a designer business so hard to run. In 2019 the company raised $1.5 million from the Farfetch founder José Neves and his wife, Daniela.