The phrase "upstart company" refers to a new or recently established business that is trying to compete with bigger, more established companies. Full definition
Just outside of Uber's spotlight are a handful of upstart companies in the person - moving space whose safety policies are not mere afterthoughts but integral to their offerings. (inc.com)
Ideal Companies: Luxury Brands and Leaders in their Market, Kohler, Henredon, Schonbek, Drexel Heritage, Maitland - Smith, Ralph Lauren, and Upstart companies with great leadership and product (members.climber.com)
3A Productions focused on creating web content for upstart companies from the ground up. (livecareer.com)