The Washington Post today announced the best places to work in the Washington D.C. area as determined by its fifth annual Top Workplaces survey. Conducted in partnership with employee engagement firm Energage, LLC (formerly WorkplaceDynamics), The Post’s survey asked people about their employers to identify 150 of the highest-ranked workplaces in the region. This year’s honorees include government contractors, law firms, nonprofits, and businesses from the D.C. region’s growing technology industry.

More than 2,800 area companies were invited to participate and 341 were surveyed. More than 57,000 employees participated in the survey questionnaires.

The Washington Post hosted an awards ceremony on Thursday, June 21 to recognize the 150 top-ranked companies. The full list along with additional content is available on The Post site. This Sunday’s edition of The Washington Post will also include a special Top Workplaces magazine, which includes profiles of the winning companies.

Here are the three highest-rated organizations within the large, mid-size and small company categories:

Large Companies:

  1. Appian Corporation
  2. Great American Restaurants
  3. FireEye

Mid-size companies:

  1. Acclaim Technical Services, Inc
  2. Thompson Creek Window Company
  3. Power Home Remodeling Group

Small companies:

  1. Macedon Technologies
  2. FTS International, LLC
  3. IntelliGenesis, LLC

The full list of honored companies can be found here.