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
Comments Box SVG iconsUsed for the like, share, comment, and reaction icons

As usual, YES, we’re hiring but we also do a lot of other important things at Cornerstone Defense... like argue about the best band of the ‘90s! 🎸🥁
 
We took a break from our usual mission-critical work to tackle the ultimate debate, and the word cloud results are officially in. 🌩️✨
Is your favorite on this list?! If not, who did we miss... and if so, who is your favorite on this list?! 👇
 
Are you Team Nirvana 🌲, Team Pearl Jam 🎸, or are you ready to fight for a total wildcard? Let’s settle this in the comments!
 
👇 Drop your vote below! 👇(And p.s... if you want to join a team that takes our work seriously but our ‘90s rock very passionately, check out our open roles at the link in the comments! 🚀)
...

Image attachment
Image attachment
Image attachment
Image attachment

We consider ourselves social event experts, but our happy hour at Level 99 last week had to be one of our best events of all time! 💥Swipe through to see our team in action taking on the ultimate interactive challenge games. Level 99 in Tysons was the perfect playground for some serious team building! We put our minds and bodies to the test, tackling everything from intense physical and mental challenges to crawling through intricate mazes and even dodging axes! 🪓👀
 
Beyond the fun and games, we were blown away by the incredible, immersive artwork built into every single game room. Win or lose, the vibes were unmatched—especially complemented with some truly amazing food and drinks. 🍕🍹It’s safe to say we had an unforgettable experience pushing our limits and laughing the entire time!
 
Now, we want to hear from you! Drop your favorite happy hour or work events in the comments below so we can add them to our list for our next team outing! 👇✨
...

Image attachment
Image attachment
Image attachment
Image attachment
Image attachment

Need we say more, or have our Cornerstone mascots done that for us !? 😂🤗 🧜‍♀️🐯🦄Just a reminder to PLEASE attend to your time cards, wherever you work! (But especially if you do work with us at Cornerstone, it would make us so, so happy! 😉✅) ...

Any chance you can relate!? 😂😂 Just a little GovCon humor today to remind you as always ... WE’RE HIRING! Check out the JD, below, for one of our hottest jobs for an NOC Technician. If it looks like a fit, reach out, or check out our other hot openings on our website! 🔥🔥🏢🏢
 
Title: NOC Technician III – Transport/IP (Trip)
Location: Scott AFB, IL
Compensation Range: $50 - $70k
Clearance: *Active Secret Clearance required*
Schedule: Rotating w/ 10% Travel

Position Description:
The NOC Technician III provides advanced network monitoring, fault analysis, incident correlation, service restoration, and customer coordination for DISN transport and IP infrastructure. This senior‑level role requires deep technical expertise, strong analytical skills, and the ability to lead complex troubleshooting within a high‑tempo operations environment.

Full job description available on our website !
...

Any chance you can r

Photos from Cornerstone Defense's post ...

Image attachment
Image attachment