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
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ThisVeterans Day, let us take time to honor the service and sacrifices of our nation’s veterans. Their dedication and commitment remind us daily of the values we uphold in our work and the importance of serving our country. We encourage you to join us in expressing gratitude for all veterans and their contributions to our freedoms. 🇺🇸 ⭐️ ... See MoreSee Less

ThisVeterans Day, let us take time to honor the service and sacrifices of our nation’s veterans. Their dedication and commitment remind us daily of the values we uphold in our work and the importance of serving our country. We encourage you to join us in expressing gratitude for all veterans and their contributions to our freedoms. 🇺🇸 ⭐️

🤣 🤣 But seriously! — know any software application support specialists who might be interested in applying? Check the link below for more information about the job! ✔️ 
lnkd.in/eVWCNqMN

Software Application Support Specialist: (Herndon, VA)
Job Requirements:
Serve as the first point of contact for customers seeking technical assistance over a ticketing system.
Perform remote troubleshooting through diagnostic techniques and pertinent questions.
Determine the best solution based on the issue and details provided by customers.
Walk the customer through the problem-solving process.
Direct unresolved issues to the next level of support personnel.
Provide accurate information on IT products.
Record events and problems and their resolution in logs.
Follow-up and update customer status and information.
Pass on any feedback or suggestions by customers to the appropriate internal team.
Identify and suggest possible improvements on procedures.
Performs other related duties as assigned.

Required Experience:
Proven experience in Supporting COTS products in a customer support role.
Good understanding of computer systems, and other tech products.
Ability to diagnose and resolve basic technical issues.
Excellent communication skills.
Customer-oriented and cool-tempered.
Understanding of Ticketing systems.
Desired Experience:
Knowledge of the Federal Acquisition lifecycle or commercial contracting.
Knowledge of Federal financial systems or commercial accounting.
Experience with Federal government contracting and/or program office organizations
hashtag#applytoday hashtag#techsupport hashtag#newopportunity hashtag#hotjobs
... See MoreSee Less

🤣 🤣 But seriously! — know any software application support specialists who might be interested in applying? Check the link below for more information about the job! ✔️ 
https://lnkd.in/eVWCNqMN

Software Application Support Specialist: (Herndon, VA)
Job Requirements:
Serve as the first point of contact for customers seeking technical assistance over a ticketing system.
Perform remote troubleshooting through diagnostic techniques and pertinent questions.
Determine the best solution based on the issue and details provided by customers.
Walk the customer through the problem-solving process.
Direct unresolved issues to the next level of support personnel.
Provide accurate information on IT products.
Record events and problems and their resolution in logs.
Follow-up and update customer status and information.
Pass on any feedback or suggestions by customers to the appropriate internal team.
Identify and suggest possible improvements on procedures.
Performs other related duties as assigned.

Required Experience:
Proven experience in Supporting COTS products in a customer support role.
Good understanding of computer systems, and other tech products.
Ability to diagnose and resolve basic technical issues.
Excellent communication skills.
Customer-oriented and cool-tempered.
Understanding of Ticketing systems.
Desired Experience:
Knowledge of the Federal Acquisition lifecycle or commercial contracting.
Knowledge of Federal financial systems or commercial accounting.
Experience with Federal government contracting and/or program office organizations
hashtag#applytoday hashtag#techsupport hashtag#newopportunity hashtag#hotjobs

It's a Happy Halloween today at Cornerstone! 👻🦇🎃 Are you dressing up this Halloween!? If so, let us know what costume you'll be rocking in the comments, below. ⬇️⬇️ Trick or Treat and cheers to a fun Halloween weekend! ... See MoreSee Less

Its a Happy Halloween today at Cornerstone! 👻🦇🎃 Are you dressing up this Halloween!? If so, let us know what costume youll be rocking in the comments, below. ⬇️⬇️ Trick or Treat and cheers to a fun Halloween weekend!

Have you visited our website recently? It's packed with the latest info about our company culture, capabilities, and insights from our executive team. From detailed articles to expert blogs, you'll find everything you need to know about us. Head to our website today and learn more about our team at cornerstonedefense.com/. If we seem like the right fit for you for a career, or a business partnership, don't hesitate to reach out -- drop us a comment, below, send us a DM or fill out the contact form on our website. We'd love to hear from you!🖥️🔗 ... See MoreSee Less

Fun share today from Ginny Blair, our Director of Marketing and Operations at Cornerstone, about our quartlerly employee newsletters. What do you think about our new print edition copies?! What things do you love or look for in an engaging employee newsletter? One of our favorite parts of our "Around the Corner" Newsletter is the Community Corner, where employees can share recent personal or professional milestones or fun news with the rest of our team. Drop us a comment and let us know how you think our print copies turned out! ⬇️⬇️📩📩 ... See MoreSee Less

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