He was managing director of Hume Industries in Malaysia from 1983 to 1988 before helming Pacven Investment from 1988 to 1992. He then held financial positions at General Motors Co and PepsiCo Inc before becoming the Vice President of Finance of Commodore International Ltd.
Tan went on to become the CEO of Integrated Circuit Systems Inc. When this was sold to Integrated Device Technology Inc, he became the latter company's chairman. Avago was created following a US$2.66 billion buyout of Integrated Circuit Systems in 2005. Tan was hired to lead the company as chief executive.
In 2015, Tan merged the company with Broadcom Corporation following an acquisition, leading to the creation of Broadcom Ltd which he currently runs.
Broadcom Corporation is an American fabless semiconductor company in the wireless and broadband communication business. The company is headquartered in Irvine, California. Broadcom was founded by a professor-student pair Henry Samueli and Henry Nicholas from the University of California, Los Angeles (UCLA) in 1991. In 1995, the company moved from its Westwood, Los Angeles, office to Irvine, California. In 1998, Broadcom became a public company on the NASDAQ exchange (ticker symbol: BRCM) and now employs approximately 11,750 people worldwide in more than 15 countries.