Glassdoor CEO Robert Hohman told CNBC, "This year's list represents a diverse group of employers hiring across the country, including top companies in tech, retail, healthcare, consumer goods, consulting and more".
The rankings are compiled through workers' reviews of the company's overall rating, career opportunities, compensation & benefits, culture & values, senior management, work/life balance, recommend to a friend and business outlook.
Amazon-which received a 3.7 rating on Glassdoor (only slightly better than average)-has actually never made that list, and it may not be too hard to figure out why.
There are more than 700,000 employers reviewed on its site, according to Glassdoor. The others are Google, ranked fifth this year, and Apple, ranked 84th.
Expedia, which topped the ranking previous year, came in 14th place in the poll. Also in 2017, Ultimate ranked seventh on Forbes' "100 Most Innovative Growth Companies" and second on People's "50 Companies That Care".
Some other Seattle companies that made the list include Starbucks (96th), Space X (50th), Zillow (57th), REI (61st), and Microsoft (39th), among others. A company must have at least 75 ratings on Glassdoor and at least 1,000 employees to be considered for the primary list.
E&J Gallo Winery of Modesto was chosen as one of the best places to work in a recent survey. The Partnership for Public Service also released its annual list, with NASA, the Department of Health Human Services and the Department of Commerce taking the top spots among large federal government agencies.