Plummer moved to
Redmond, Washington, in 1993 to work for
Microsoft as an intern in the
MS-DOS department, working for Ben Slivka. He was later offered a full-time job with the company for $35,000 a year. Plummer said in a 2021 interview: "As intern I wrote a bunch of major features, like
Smart Drive cache for CD-ROM, and
DISKCOPY". During his tenure with Microsoft, Plummer's works included
MS-DOS 6.2 and
Windows NT,
Task Manager, and
Space Cadet Pinball. Plummer left Microsoft in 2003 In 2006, SoftwareOnline was sued by
The Washington State Attorney General's Office for alleged violations of the Consumer Protection Act after complaints were made about two products called "Registry Cleaner" and "InternetShield". SoftwareOnline agreed to pay $150,000 in civil penalties, plus $250,000 that was ultimately suspended following compliance with all terms in the settlement, as well as $40,000 in legal fees. He also founded Xeriton Corporation during this period, whose major product was the Blue Phone technical support service. In December 2009, Xeriton was sold to Support.com for $8.5 million. He continues to code in his free time and in 2018 started a YouTube channel called ''Dave's Garage'', where he creates a variety of content regarding computer programming and his personal interest, cars. Plummer has given lectures at universities including the
University of Regina (2018, 2020, 2022) and the
University of Oxford (2021). ==References==