Four Sea Group is a technical mission support company founded in 2012, headquartered in Denver, Colorado. The firm is 100% employee-owned and specializes in supporting complex programs for government and industry partners across defense, space, software, systems, and mission-focused domains.
The company's ownership structure is central to its operating model. As an employee-owned firm, Four Sea Group has built its compensation, benefits, and culture around the principle that company success should directly benefit those doing the work. The team is composed of highly skilled engineers and technical experts, and the firm positions itself as a reputation-driven organisation.
Four Sea Group's work spans the full range of technical mission support, from software and systems engineering to broader defence and space program support. The company serves both government agencies and private-sector partners engaged in complex, mission-critical programs.






