In 1996, he started his professional career at Level One Communications in San Francisco, USA. He was one of the lead IC designers in developing CMOS RF transceiver products, which were among the earliest in the industry at that time. In 2000, he co-founded Wireless Interface Technologies in Dublin, USA, with a focus on developing CMOS RF transceiver products for WLAN and Bluetooth applications.

From 2004 to 2011, he worked at Marvell Semiconductor in Santa Clara, USA, concentrating on CMOS RF/analog IC product development for a wide range of wireless and wireline connectivity applications. In 2012, he joined Samsung Electronics in Hwaseong-si, South Korea, where he held executive positions and led multiple engineering teams. His responsibilities included the development of cellular/connectivity RF transceivers, analog/mixed-signal IPs, and multimedia IPs. Additionally, he was responsible for managing digital physical implementation and design verification activities.

Since 2022, he has been serving as an Invited Professor at KAIST while also providing technical advisory services to IC design companies. His technical interests include RF/analog/mixed-signal circuit designs for wireless and wireline communication systems, low-power digital circuit techniques for processors, and analog-to-digital interface circuit designs for sensor applications.

He is a co-recipient of the Jack-Kilby Award for Outstanding Student Paper at ISSCC 1998 and, in 2021, his RFIC team at Samsung received the President’s Award at the 22nd Broadcasting Technology Awards by the Ministry of Science and ICT in S. Korea. He has authored or co-authored over 40 journal articles and conference papers and holds more than 40 patents. He is an IEEE Fellow.