Phillips was hired by the military contractor
Raytheon as an
engineer in 1948. The aim was "to insulate [Raytheon] from the unpredictability of military spending". Acquisitions under Phillips included engineering manufacturing assets (in its acquiring
United Engineers and Constructors and Cedar Rapids Corp.), consumer
white goods (e.g., in its acquiring
Amana and
Speed Queen), as well other categories of assets. The period has also been characterized as exhibiting patient stewardship of acquired assets—he is described as having carried on despite an asset "not [being] immediately successful". Writing in
The New York Times obituary for Phillips, Daniel E. Slotnik describes one example, regarding Raytheon's purchase and management of
Beech Aircraft:Raytheon bought Beech Aircraft [in 1980] for a reported $790 million, just before the general aviation market crashed. Rather than walk away, ...Phillips poured hundreds of millions of dollars into Beech, developing a cutting-edge corporate aircraft called the Starship and positioning Raytheon to benefit when the airplane market rebounded in 1988. Phillips is credited with the leadership that would, through acquisitions and diversification, allow Raytheon to surpass $1 billion in sales, which they had done by 1967. By 1990, the bellwether of non-governmental sales reached approximately $3.6 billion of Raytheon's $9 billion in revenue, and 25% of its >$930 million in operating profit. Phillips would hold executive positions with Raytheon until his retirement in 1991, and would remain on its board until 2000.
Board positions Phillips served on several boards, including
Digital Equipment Corporation,
John Hancock Mutual Life Insurance Company,
Knight-Ridder Inc., and
State Street Research & Management. ==Awards and recognition==