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
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We're hiring for an IT SYSTEMS ADMIN, on-site at our Herndon, VA office! ⭐⭐✅✅ Follow the link to learn more/apply. We'd love to hear from you! lnkd.in/gpQ6ht9E ... See MoreSee Less

Were hiring for an IT SYSTEMS ADMIN, on-site at our Herndon, VA office! ⭐⭐✅✅ Follow the link to learn more/apply. Wed love to hear from you! https://lnkd.in/gpQ6ht9E

🚀 Are You an Innovator or a Skeptic? 🤔

Check out this newsletter excerpt from our Director of Marketing & Operations on Innovation & Growth — two game-changers in both business and life! This short read dives into the Diffusion of Innovation Theory, exploring how new ideas and technologies spread, and why some people jump on board faster than others.

It's fascinating to see where we all fall on the spectrum of early adopters vs. cautious skeptics. So, where do you stand? Are you the first to try new tech, or do you wait it out? Give the article a read at the following link, and if it resonates with you, drop us a comment and start some conversation! ⬇️⬇️ cornerstonedefense.com/newsletter-excerpt-innovation-diffusion-of-information/
... See MoreSee Less

🚀 Are You an Innovator or a Skeptic? 🤔

Check out this newsletter excerpt from our Director of Marketing & Operations on Innovation & Growth — two game-changers in both business and life! This short read dives into the Diffusion of Innovation Theory, exploring how new ideas and technologies spread, and why some people jump on board faster than others. 

Its fascinating to see where we all fall on the spectrum of early adopters vs. cautious skeptics. So, where do you stand? Are you the first to try new tech, or do you wait it out? Give the article a read at the following link, and if it resonates with you, drop us a comment and start some conversation! ⬇️⬇️ https://cornerstonedefense.com/newsletter-excerpt-innovation-diffusion-of-information/

Need one of those job things!? WE'RE HIRING for a Systems Engineer in Chantilly, VA! Check out details, below, or follow this link to apply on our website: We'd love to here from you! ⭐⭐✅✅

Job Responsibilities:
Designs and defines system architecture for new or existing computer systems
Coordinates system development to include design, modeling, security, integration, and formal testing
Contributes to completion of engineering programs and projects
Develops solutions to a variety of complex engineering problems
Oversees complex infrastructure including installing, configuring, testing, and maintaining operating systems, application software, and system management tools
Performs continual maintenance and provides complex solutions for security, backup, and redundancy problems
Prepares and maintains documentation for processes and procedures relate to engineering projects
Experience with Nutanix, Splunk, AWS/Azure, and/or HPE storage solutions

Required Skills:
Strong Windows background with familiarity operating in a Linux environment
Experience with SIEM tools, Virtual Desktop Infrastructure and delivery, Cloud and/or Hybrid-Cloud experience
Enterprise storage experience
Works independently under general supervision
Possess current DoD IAT II Level certification

Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Benefits Overview:
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *
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GIVEAWAY ALERT! 🎉💧
 
If there’s one thing we love for a productive workday, it’s making sure our team stays healthy and hydrated 💦💦 throughout the day. That’s why we’re excited to give away some of our awesome Cornerstone Defense drink tumblers—designed to keep your beverages cool, your desk stylish, and your hydration game strong!
 
✨ How to Enter:
1️⃣ Comment “H2O!” below this post.
2️⃣ Tag a friend who’d love to sip in style with you.
🎁 The Prize: If you win, both you AND your tagged friend will score one of these sturdy, spill-proof tumblers!
🗓️ Hurry—entries close Monday, 1/27. We’ll announce the winner shortly after.
 
💡 Did you know? Staying hydrated can:
✔️ Boost your energy and focus.
✔️ Improve your mood.
✔️ Keep your body performing at its best.
Let’s make hydration the MVP of your workday! Cheers to sipping smart. 🥤💙
... See MoreSee Less

GIVEAWAY ALERT! 🎉💧
 
If there’s one thing we love for a productive workday, it’s making sure our team stays healthy and hydrated 💦💦 throughout the day. That’s why we’re excited to give away some of our awesome Cornerstone Defense drink tumblers—designed to keep your beverages cool, your desk stylish, and your hydration game strong!
 
✨ How to Enter:
1️⃣ Comment “H2O!” below this post.
2️⃣ Tag a friend who’d love to sip in style with you.
🎁 The Prize: If you win, both you AND your tagged friend will score one of these sturdy, spill-proof tumblers!
🗓️ Hurry—entries close Monday, 1/27. We’ll announce the winner shortly after.
 
💡 Did you know? Staying hydrated can:
✔️ Boost your energy and focus.
✔️ Improve your mood.
✔️ Keep your body performing at its best.
Let’s make hydration the MVP of your workday! Cheers to sipping smart. 🥤💙

✨ Huge shoutout to our amazing Colorado team for an incredible 2024! ✨
 
We had an absolute blast at our annual appreciation party, celebrating the big wins, hard work, and dedication that made this year so successful. It was wonderful to catch up with those who could join us, and we truly missed those who couldn’t make it.
As we start a new year, we’re looking ahead to even bigger and better things in 2025. Together, there’s nothing we can’t achieve! 🚀
 
Here’s to our Colorado team—thank you for everything you do! 🥂💙
#EmployeeAppreciation #ColoradoTeam #CelebratingSuccess
... See MoreSee Less

✨ Huge shoutout to our amazing Colorado team for an incredible 2024! ✨
 
We had an absolute blast at our annual appreciation party, celebrating the big wins, hard work, and dedication that made this year so successful. It was wonderful to catch up with those who could join us, and we truly missed those who couldn’t make it.
As we start a new year, we’re looking ahead to even bigger and better things in 2025. Together, there’s nothing we can’t achieve! 🚀
 
Here’s to our Colorado team—thank you for everything you do! 🥂💙
#EmployeeAppreciation #ColoradoTeam #CelebratingSuccessImage attachmentImage attachment+6Image attachment
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