DefenderCo is a Service-Disabled Veteran-Owned Small Business (SDVOSB) providing reliable, compliance-driven support services to government and commercial clients nationwide. We specialize in managing and coordinating operations with a focus on accountability, quality, and mission readiness.
Led by a team of service-disabled Veterans, DefenderCo brings a disciplined, compliance-focused approach to service delivery. Our leadership experience shapes how we manage performance, documentation, and accountability-whether supporting a government agency, public institution, or private organization.
Three service lines across federal sites, delivered under one accountable prime.
Environmental remediation and site cleanup, hazardous spill containment, dewatering and excavation, soil management, and compliance consulting - kept compliant and audit-ready end to end.
Learn More →Mastication, thinning and hazardous fuel reduction, native planting and coastal dune restoration, protective and exclusion fencing, and forest road and culvert repair on remote access routes.
Learn More →Custodial, groundskeeping and landscaping, recreation-surface and range work, security fence and access control, commercial construction, capital improvements and roofing repair.
Learn More →A disciplined sequence, end to end.
Define the requirement and secure the permits.
Build the plan and mobilize crews and equipment.
Deliver to specification, in full compliance.
Verify the work and close out, audit-ready.
Streamlined access to our services for federal agencies.
Certified Prime Contractor
XGUXWSGWND75
9KCT5
561210 (Primary)
Mark McKenzie is a decorated Marine Corps combat veteran, serial entrepreneur, and nationally recognized government contractor. After two combat tours in Iraq - earning the Combat Action Ribbon and two Navy Commendations - he transitioned into the offshore oil and gas industry, working with ExxonMobil, Statoil, Maersk, and Transocean in the Gulf of Mexico.
Mark founded DefenderCo, a veteran-owned government contracting firm delivering high-quality services to federal and institutional clients nationwide. A committed member of the VFW and American Legion, Mark carries the same sense of duty from the battlefield into every venture he leads.
Reach out to discuss your agency's environmental, restoration, or facility requirements. We are ready to serve.