WELCOME TO

Cornerstone

About Us

Cornerstone Defense LLC is a Small Business servicing the Intelligence, Defense, and Space communities of the U.S. Government. 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, MD, CO, UT, NM, HI, and CA. At Cornerstone Defense, you’ll find a partner that values strong relationships, excellence, and teamwork. Our team is a network of professionals who are dedicated to providing agile, secure, and efficient solutions to support mission success. With Cornerstone Defense, you’re not just choosing a service provider, but a committed, steadfast team with a culture designed to excel.

Vision & Mission

Meet The Team

Reilly Leonard

Chief Operating Officer

Reilly Leonard

Chief Operating Officer

Patrick Palmer

Chief Executive Officer

Patrick Palmer

Chief Executive Officer

Brian Sammons

Chief Financial Officer

Brian Sammons

Chief Financial Officer

Darcelle Wilson

VP of Human Resources

Darcelle Wilson

VP of Human Resources

Brandon Altmann

Chief Growth Officer

Brandon Altmann

Chief Growth Officer

Michelle Allen

Director of Systems and Security, FSO

Michelle Allen

Director of Systems and Security, FSO

Virginia Blair

Director of Marketing & Operations

Virginia Blair

Director of Marketing & Operations


Kaitlin Krywy

Managing Director, Aerospace & Defense

Kaitlin Krywy

Managing Director, Aerospace & Defense

WHERE CAN WE HELP?

To find out more information on where we can help you, services we provide,

joining or partnering with our team, please select one of the links below!

WHAT WE DO

We bring together a unique blend of cutting-edge capabilities, specialized expertise, and a remarkable company culture that focuses on the recruitment and retention of highly-sought-after employees.

Learn More

WORK WITH US

Search through all of our open positions.

Learn More

GET IN TOUCH

Contact Us
  • Virginia
    13454 Sunrise Valley Drive, Suite 100
    Herndon, VA 20171
    Maryland
    2288 Blue Water Blvd, Suite 330
    Odenton, MD 21113
  • eFAX
    443.769.1559
  • Phone
    703.691.5100
Globe
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Happy Black Friday and Thanksgiving weekend to everyone! The turkey’s been stuffed and eaten and we hope you all had a wonderful holiday. Special thanks to the workers running the show in retail, restaurants, hospitality and essential work this weekend, and keep also in your thoughts those who might be alone or grieving this holiday. We hope no matter who you are, you find some gratitude this weekend and please know, we’re sure grateful for you following along with our journey! 🦃🍗🍂😊 ... See MoreSee Less

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Who saw Wicked this weekend? 🧙🏻‍♀️🪄🧹
Because we’ve got a wicked opportunity for you!
✨ Tell everyone we’re hiring! ✨
If you’re ready to defy gravity in your career, check out our open roles now. (Link in comments!) 🔗🔗
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Who saw Wicked thi

Throwback to our Director of Marketing & Operations, and our VP of Human Resources at the Executive Woman Business Leadership Conference a couple weeks ago — a premier event designed to elevate women in leadership and drive meaningful change across industries hosted by Executive Woman Media.

This year’s conference brought together dynamic women executives for a day of authentic dialogue, strategic insight, and leadership development. From navigating the evolving workplace to fostering inclusive cultures and building resilient teams, the sessions sparked powerful conversations and actionable takeaways.

👏 We’re proud to be part of a community that champions real leadership, real stories, and real results, and we can’t wait to attend again next year!

#ExecutiveWoman #WomenInLeadership #BusinessLeadershipConference #EmpoweredWomen #LeadershipMatters #MarketingAndHR #WomenWhoLead #AuthenticLeadership
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🍻 Got a favorite local hangout? We want in.
We’re looking for more awesome spots to take our Cornerstone pint glasses — breweries, cafés, patios, rooftops, anywhere with good vibes and great people. If you’ve got a place in mind, drop us a DM or tag them below! 👇

In the meantime… can you guess where these photos were taken? 👀

Our pint glasses have been out exploring, and we’re loving the local love!
#CSDEFOnTheGo #CornerstoneSwag #GuessTheLocalSpot #SupportLocal #PintGlassPassport
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Are you really, really, ridiculously good at recruiting?
Or maybe you’re just getting started—but you’ve got the energy, drive, and people skills to crush it.

👋 We’re hiring an Entry-Level Technical Recruiter at Cornerstone Defense!

💼 No experience? No problem.
💥 Uncapped earning potential
🧠 Mentorship from industry pros
🚀 Real impact from day one

If you’re ready to launch your career in the fast-paced world of government contracting, this is your moment.
📩 Apply now and let’s build something great together. cornerstonedefense.com/job-listings/resource-manager-technical-recruiter/

#NowHiring #EntryLevelJobs #TechRecruiter #CornerstoneDefense #CareersThatMatter #RecruiterLife #GovConJobs #MissionDriven
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