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

Sean Wentz

Managing Director, MPO

Sean Wentz

Managing Director, MPO

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

We may have a few fools in the office… but today, we’re celebrating them! 😜😂 No prank here—just some good old-fashioned fun! Throwback to our Open House Photo Booth last year that our employees and guests definitely enjoyed (maybe a little too much. 😂) Happy April Fool’s Day! ... See MoreSee Less

We may have a few fools in the office… but today, we’re celebrating them! 😜😂 No prank here—just some good old-fashioned fun! Throwback to our Open House Photo Booth last year that our employees and guests definitely enjoyed (maybe a little too much. 😂) Happy April Fool’s Day!Image attachmentImage attachment

Oh, the old timesheet debacle. 😂😂 Just a fun and friendly reminder to do your timesheets in the timeliest manner possible! Your office admin/back office employees will really appreciate you for it. ⭐⭐🤩🤩✅✅ Happy Friday Eve, everyone! ... See MoreSee Less

Oh, the old timesheet debacle. 😂😂 Just a fun and friendly reminder to do your timesheets in the timeliest manner possible! Your office admin/back office employees will really appreciate you for it. ⭐⭐🤩🤩✅✅ Happy Friday Eve, everyone!Image attachmentImage attachment+1Image attachment

Did you know that it’s Neurodiversity Celebration Week!? 🧠🌟

At Cornerstone Defense, we recognize that innovation, creativity, and success are fueled by diverse perspectives. Neurodiversity embraces the idea that brains work in beautifully different ways—including those of individuals with autism, ADHD, dyslexia, dyspraxia, and many other neurological variations. While neurodiverse individuals may have unique challenges, they also have equally unique strengths! They bring fresh ideas, out-of-the-box thinking, and innovative problem-solving to the workplace.

As an employer, we have always believed that solving complex challenges requires a team of individuals with different skill sets, perspectives, and ways of thinking. That’s why we’re committed to fostering an inclusive and supportive environment where everyone has an equal opportunity to thrive—regardless of how their brain is wired.

💡 Why Does Neurodiversity Matter in the Workplace?
✅ It encourages creative solutions to complex problems
✅ It strengthens collaboration by bringing diverse viewpoints to the table
✅ It unlocks untapped potential by valuing unique talents
✅ It builds a culture of inclusion and belonging, where everyone can do their best work

We believe in a workplace where differences are celebrated, not just accommodated. From ensuring equitable hiring practices to creating a work environment that empowers all individuals, we are dedicated to supporting neurodiverse talent.

So this week, take a moment to appreciate the power of thinking differently. Let’s celebrate the incredible contributions of neurodivergent individuals in our teams, in our industry, and across the world! 🌍💙
... See MoreSee Less

Did you know that it’s Neurodiversity Celebration Week!? 🧠🌟

At Cornerstone Defense, we recognize that innovation, creativity, and success are fueled by diverse perspectives. Neurodiversity embraces the idea that brains work in beautifully different ways—including those of individuals with autism, ADHD, dyslexia, dyspraxia, and many other neurological variations. While neurodiverse individuals may have unique challenges, they also have equally unique strengths! They bring fresh ideas, out-of-the-box thinking, and innovative problem-solving to the workplace.

As an employer, we have always believed that solving complex challenges requires a team of individuals with different skill sets, perspectives, and ways of thinking. That’s why we’re committed to fostering an inclusive and supportive environment where everyone has an equal opportunity to thrive—regardless of how their brain is wired.

💡 Why Does Neurodiversity Matter in the Workplace?
✅ It encourages creative solutions to complex problems
✅ It strengthens collaboration by bringing diverse viewpoints to the table
✅ It unlocks untapped potential by valuing unique talents
✅ It builds a culture of inclusion and belonging, where everyone can do their best work

We believe in a workplace where differences are celebrated, not just accommodated. From ensuring equitable hiring practices to creating a work environment that empowers all individuals, we are dedicated to supporting neurodiverse talent.

So this week, take a moment to appreciate the power of thinking differently. Let’s celebrate the incredible contributions of neurodivergent individuals in our teams, in our industry, and across the world! 🌍💙Image attachmentImage attachment+1Image attachment

🚀 We're Hiring! Data Scientist / Data Architect 🚀
Are you a data-driven problem solver with an active TS/SCI with polygraph? Do you thrive on turning complex datasets into actionable intelligence? If so, we want you on our team!

🔍 What You’ll Do:
📊 Develop cutting-edge data solutions
🧠 Use AI/ML to unlock insights
💾 Architect and optimize secure data systems
🤝 Collaborate with mission-focused teams
📍 Location: [Insert Location]
⚡ Clearance Required: Active TS/SCI with polygraph

💡 If you're ready to take your career to the next level and work on projects that truly matter, apply now! Or tag a cleared connection who’d be a great fit! Follow the job link, below, or visit our website to learn more about us today: cornerstonedefense.com/

🔗 [lnkd.in/eFvk7b2U]
... See MoreSee Less

🚀 Were Hiring! Data Scientist / Data Architect 🚀
Are you a data-driven problem solver with an active TS/SCI with polygraph? Do you thrive on turning complex datasets into actionable intelligence? If so, we want you on our team!

🔍 What You’ll Do:
 📊 Develop cutting-edge data solutions
 🧠 Use AI/ML to unlock insights
 💾 Architect and optimize secure data systems
 🤝 Collaborate with mission-focused teams
📍 Location: [Insert Location]
 ⚡ Clearance Required: Active TS/SCI with polygraph

💡 If youre ready to take your career to the next level and work on projects that truly matter, apply now! Or tag a cleared connection who’d be a great fit! Follow the job link, below, or visit our website to learn more about us today: https://cornerstonedefense.com/

🔗 [https://lnkd.in/eFvk7b2U]
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