The results are based on confidential employee surveys as well as a company’s level of employee participation. For example, if a company scores well in the 10 categories described below but has low employee participation, it doesn’t do as well in the rankings as a company with similar scores and a much better participation rate.

Seattle Business magazine's 100 Best Companies work hard, but they also know how to have fun! Check out the lip sync video we made with a few of our favorite honorees. We can't stop the feeling that they are awesome!

“Really happy employees make really happy clients.” That’s been the working principle since Jeff Pelletier founded Board & Vellum in 2011.

Kinetic Sports Rehab blends chiropractic, physical therapy and sports medicine to give its clients “something different” in the pursuit of recovery from injury, relief from pain and improvement in athletic performance.

RealSelf, which turns 10 this fall, is an online community sharing information about elective cosmetic procedures — from breast augmentation to Brazilian butt lifts, from “mommy makeovers” to microdermabrasion, from porcelain veneers to permanent makeup.

Prime 8 provides consulting services to local giants like Amazon, Microsoft, Premera and Boeing.

When Geeman Yip started BitTitan in 2007, he envisioned a workplace reminiscent of the dot.com days with fun, collaborative spaces.

PitchBook offers clients data on global mergers and acquisitions, private equity and venture capital activity that goes far beyond what’s available online.