Cornerstone Defense LLC is a Small Business servicing the Intelligence, Defense, and Space communities of the U.S. Government. Our high-end engineers bring agile and differentiated solutions to the war fighter and mission partners. Cornerstone Defense specializes in cloud architecture, enterprise engineering, systems and network engineering, systems
and network security, and application and software development. We use these foundational technology areas to deliver solutions for data analytics, cyber, and space/mission operations, customized to meet mission requirements. We are headquartered in Herndon, VA, with employees working across the U.S including DC, VA, CO, UT, NM, HI, and CA.

Cornerstone Defense applies our proven Mission Driven Methodology to assist customers in making effective and informed decisions across their missions. We provide a team of experienced technologists, scientists, and subject matter experts to design and improve customer focused solutions. Cornerstone Defense is focused on providing core mission services and
solutions with a strong value proposition.

DOD/Space Sector

The Cornerstone Defense Space/DoD Sector spans diverse mission areas among the agencies / branches of our nations Space and Intelligence Communities. Our core capabilities are focused on systems engineering/integration, guidance navigation and control algorithms, ground segment design and integration, systems and software testing, satellite command and control, cloud optimized network integration, software development, cyber security, and supply chain and logistics support.  Cornerstone Defense is focused on providing core mission services and solutions with a strong value proposition.

In support of all service support elements, we ensure our team continuously provides innovation, and continuity of operations to our men and women of the Defense and Intelligence communities. The overarching organizations and agencies that we support include the Space Force, Air Force, Navy, and other classified agencies.

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Intel Sector

The Cornerstone Defense Intelligence Sector provides solutions to the United States Government for information collection, operations, exploitation and dissemination, and research activities. Our operational support team focuses on building and deploying innovative tools and monitoring their effectiveness, while our intelligence analysts and targeting team helps our customers plan and conduct informed operations based upon precise intelligence. Organizations and agencies in this market include Military Intelligence, National Intelligence, Signals Intelligence/MPO, Cyber Command, Defense Intelligence Agency (DIA), Federal Bureau of Investigations (FBI), Department of Homeland Security(DHS), Drug Enforcement Agency (DEA), and the Department of State

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Cornerstone Defense LLC has a proven ability to find, recruit, deliver, and maintain highly qualified individuals for the
numerous large, small, and prime Customers/Programs that we support. Our employees bring educational and real-world
expertise to every Customer we support, and we are regarded as a preferred teammate to fill both key and challenging

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Contract Vehicles

Leadership Team

Brandon Altmann

Chief Growth Officer

Brandon Altmann

Chief Growth Officer

Core Technical Capabilities


  • Enterprise Management
  • Configuration Management
  • Enterprise OS Build Management
  • Enterprise Storage Development & Sustainment
  • Network Architecture, Design, Engineering & Install

Application/Cloud DEV

  • Application Development
  • Cloud Development
  • System Configuration


  • Cyber Systems Engineering
  • Information Assurance Development & Sustainment
  • Incident Response & Forensics
  • Endpoint Protection
  • Analytical Application Development & Integration
  • Cyber Analytics

Data Management

  • Data Science & Big Data Analytics
  • Data Engineering
  • Data Administration
  • Data Manipulation
  • Statistical Analytics
  • Elastic Search
  • Database Development

Space System &
Vehicle Engineering

  • Complex Orbit Analytics
  • Satellite Development
  • Ground Segment Development
  • Satellite Operations & Maintenance

More Info…

Our capabilities are always growing, so if you have a problem and need support, we are looking forward to collaborating with you.  Please contact us!

Would You Like
To Collaborate?

We would love to work with you – Your mission, is our mission!

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Connect with us

Find us on Social Media and keep up to date with job openings and the latest news!


Contact Us
  • Virginia
    13454 Sunrise Valley Dr. Ste 225
    Herndon, VA 20171
  • eFAX
  • Phone