[1] He is also founder of Nomis Solutions, a Silicon Valley company specializing in pricing science and practice for financial institutions.

[4][5] Phillips is author of the book Pricing and Revenue Optimization, a textbook on revenue management (also called yield management) and pricing optimization tactics.

[7] Prior to starting Nomis Solutions, Phillips was chief technology officer of Manugistics.

He also was founder and chief executive officer for Talus Solutions, which was acquired by Manugistics in 2000 and chief executive officer of Decision Focus Incorporated, a management consulting company.

[7][8] He was elected to the 2014 class of Fellows of the Institute for Operations Research and the Management Sciences.