WELCOME TO

Cornerstone

Our Culture

The Cornerstone Defense culture is based upon the concept that our employees are the foundation of our business. We support our Customers’ needs of providing mission focused individuals by engaging our employees in meaningful positions, training, social events, and both civic and philanthropic event participation. We reach the best mission outcome for our Customers by prioritizing our well-balanced and motivated workforce and their values. Every person at Cornerstone Defense is a valued member of our team and at the heart of our culture is the belief that when you are happy, empowered, and encouraged to grow, everyone benefits.

Community Outreach

Everyone at Cornerstone Defense realizes the importance of giving back to their community. Our company began as a Service-Disabled Veteran-Owned Small business and in light of that, we support several Veteran based charitable organizations. As we continue to grow as a company, we are always looking for ways to give back to the community by participating in various annual events, raising money and awareness for these worthy causes.

Diversity & Inclusion

Cornerstone Defense is proud to be an Equal Opportunity Employer. We are committed to creating an inclusive working environment for all employees and to upholding diversity in our recruiting and hiring processes. All qualified applicants will receive equal consideration for employment without regard to sex, gender identity, sexual orientation, race, color, age, religion, national origin, physical or mental disability, protected Veteran status, or any other characteristic protected by law.

Benefits Overview

A quick overview into some of our great benefits at Cornerstone Defense:

  • Medical, Dental, 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

Continuing Education and Training

Cornerstone Defense’s self-paced and self-study online courses are helpful in not only gaining knowledge, but many are also geared towards specific industry certifications and degrees. These zero-cost to employee offerings are comprised of over 7,000 hours of technical, IT related courses, covering all aspects and career paths from Security to Engineering. In the event you can’t find a certification or education training track within our SkillSets online portal, Cornerstone Defense also offers reimbursement for many other types of professional certifications, continuing education, and training programs.

Employee Voices

We are happy to share about the meaning of our Culture at Cornerstone Defense, but we are thrilled when an employee can share the same sentiment. Here’s a recent review from our Cornerstone Defense Glassdoor page that we hope gives insight into working at Cornerstone:

“Working at Cornerstone Defense has been an incredibly rewarding experience, and I couldn’t be more satisfied with the way this company treats its employees. From the moment I joined, it was evident that employee well-being is a top priority here. One of the standout features of working at Cornerstone is the emphasis on creating a positive work environment through various employee events and initiatives. Whether it’s team-building activities, wellness programs, or celebratory events, there’s always something happening to foster camaraderie and boost morale among the staff. These events not only create a sense of belonging but also contribute to a happier and more cohesive workplace. Moreover, I am truly impressed by Cornerstone’s commitment to giving back to the community through its charitable contributions. It’s heartwarming to see the company actively involved in supporting meaningful causes, and it instills a sense of pride in being part of an organization that values social responsibility. What sets Cornerstone apart is the accessibility and approachability of top management. Unlike some companies where senior leadership feels distant or unapproachable, here, the top managers are not only accessible but also genuinely interested in hearing from employees at all levels. They actively solicit feedback, listen to our ideas, and take proactive steps to implement positive changes based on employee input. Furthermore, Cornerstone is committed to fostering a culture of fairness and transparency. I appreciate how decisions are made with fairness and equity in mind, and everyone’s contributions are recognized and valued. This creates a sense of trust and mutual respect among colleagues, which ultimately leads to a more harmonious and productive work environment. In summary, working at Cornerstone has been an enriching journey characterized by a supportive work culture, meaningful employee engagement initiatives, and a genuine commitment to making a positive impact both within the organization and in the broader community. I feel fortunate to be part of such a forward-thinking and employee-centric company.”

Connect with us

Find us on Social Media and keep up to date with job openings and the latest news!

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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🎃👻 Happy Halloween from the Cornerstone Defense crew! We faced ghosts, ghouls, and GovCon horrors — and lived to tell the tale. Swipe through our AI-generated haunted house moments… if you dare 💀🕸️ #hauntedgovcon #halloween2025 #clearancerequired #cornerstonedefense #boocrew ... See MoreSee Less

🎃👻 Happy Halloween from the Cornerstone Defense crew! We faced ghosts, ghouls, and GovCon horrors — and lived to tell the tale. Swipe through our AI-generated haunted house moments… if you dare 💀🕸️ #HauntedGovCon #Halloween2025 #ClearanceRequired #CornerstoneDefense #BooCrewImage attachmentImage attachment+2Image attachment

🧩 Can you crack the code?   We’re hiring—but we’re not just handing out the job title. Slide through the clues in our carousel and see if you can figure out what role we’re looking to fill.
 
🔍 Here’s what we can tell you:
• You’ll be working in a secure, mission-critical environment in Springfield, VA
• You’ll support Windows systems, cloud integrations, and classified networks
• You’ll need an active TS/SCI with CI Poly
• You’ll be part of a team that values precision, uptime, and collaboration
• You’ll troubleshoot, patch, and automate your way to operational excellence
💡 Bonus points if you’re fluent in PowerShell, know your way around AWS, and have a Security+ cert in your back pocket.
 
Think you’ve solved it? 🖱️ Swipe through the slides to confirm your guess. 📩 Ready to apply? Let’s talk.
 
#TechCareers #WindowsEngineer #TSSCIJobs #NowHiring #CyberCareers #GovTech #SpringfieldVAJobs #ClearanceJobs #SystemsEngineer #JoinOurTeam
... See MoreSee Less

🧩 Can you crack the code?   We’re hiring—but we’re not just handing out the job title. Slide through the clues in our carousel and see if you can figure out what role we’re looking to fill.
 
🔍 Here’s what we can tell you:
 • You’ll be working in a secure, mission-critical environment in Springfield, VA
 • You’ll support Windows systems, cloud integrations, and classified networks
 • You’ll need an active TS/SCI with CI Poly
 • You’ll be part of a team that values precision, uptime, and collaboration
 • You’ll troubleshoot, patch, and automate your way to operational excellence
💡 Bonus points if you’re fluent in PowerShell, know your way around AWS, and have a Security+ cert in your back pocket.
 
Think you’ve solved it? 🖱️ Swipe through the slides to confirm your guess. 📩 Ready to apply? Let’s talk.
 
#TechCareers #WindowsEngineer #TSSCIJobs #NowHiring #CyberCareers #GovTech #SpringfieldVAJobs #ClearanceJobs #SystemsEngineer #JoinOurTeamImage attachmentImage attachment+3Image attachment

“I’ve never seen a workplace where people are so happy!” 😊 That’s what a new team member recently said after a visit to our office — and honestly, we hear that a lot!
 
This quick hallway moment — just two coworkers laughing during the day-to-day routine — captures something real about our culture. At Cornerstone Defense, we believe that when you build a company on trust 🤝, purpose 🎯, and people-first values 💙, joy becomes part of the job.
 
We’re mission-driven 🚀, but we never lose sight of the human side of the work. Whether we’re solving complex national security challenges 🛡️ or just sharing a laugh between meetings 😂, we show up for each other—and it shows.
 
Want to know more about what it’s like to work at Cornerstone Defense? Visit our website today, fill out our contact form or shoot us a LinkedIn direct message. We’d love to hear from you!
 
#WorkCulture #CornerstoneDefense #HappyTeam #MissionDriven #PeopleFirst #LifeAtCornerstone
... See MoreSee Less

🎃👻 It may be spooky season… but the scariest thing of all? How many open roles we’re hiring for! 🕷️💼
 
Our haunted headquarters is decked out for Halloween, but behind the cobwebs and pumpkins, we’re on the hunt for top-tier talent. If you hold a TS/SCI with polygraph and you’re ready to level up your career, Cornerstone Defense wants to hear from you.
 
🧠 Cyber, cloud, data, and more — we’ve got roles that’ll make your resume scream (in a good way).
 
🔗 Apply now: cornerstonedefense.com
... See MoreSee Less

🎃👻 It may be spooky season… but the scariest thing of all? How many open roles we’re hiring for! 🕷️💼
 
Our haunted headquarters is decked out for Halloween, but behind the cobwebs and pumpkins, we’re on the hunt for top-tier talent. If you hold a TS/SCI with polygraph and you’re ready to level up your career, Cornerstone Defense wants to hear from you.
 
🧠 Cyber, cloud, data, and more — we’ve got roles that’ll make your resume scream (in a good way).
 
🔗 Apply now: cornerstonedefense.comImage attachmentImage attachment+1Image attachment
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