Nguyen headed business development and product management at the ForeFront Group, which was founded in 1992 and had their initial public offering in 1995.
He served as vice president of products of FreeLoader which was founded in 1995 and sold in 1996.[3][4]
Nguyen founded Onebox.com in 1999. It was acquired for $850 million in 1999 by Phone.com (later part of Openwave).[2]
He sold his stake quickly and started SEVEN Networks, a wireless e-mail firm that claimed 1.4 billion accounts.
Nguyen founded Seven Networks in May 2000 and served as its co-chief executive officer until April 2005.
In 2002, Nguyen was named to the MITTechnology ReviewTR100 as one of the top 100 innovators in the world under the age of 35.[5]
Nguyen was a co-founder of Color labs, Inc. in 2010 and served as its chief executive officer, but had been away from day-to-day operations since July 2012.[11]
Apple acquired Color labs for their engineering team and the Color service was closed in 2013.