Four Sea Group, founded in 2012 and headquartered in Denver, Colorado, is a technical mission support company that is entirely employee-owned. The firm provides engineering and technical experts to solve complex problems for both government and industry clients. Its workforce comprises highly skilled engineers and technical specialists working across domains including defense, space, software, systems engineering, and mission-focused programs.
The company's client base spans defense agencies, space organisations, and aerospace firms, as well as startups and multinational corporations. Its culture is shaped by its employee-ownership model, which structures compensation, benefits, and workplace practices around the principle that value generated by the company should return to those doing the work.






