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.
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!
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.
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Donut underestimate how much we love our team 🍩💥
We’re fueled by mission, talent… and today, sugar. 😎
Celebrating #NationalDonutDay the only way we know how—by treating our people to the good stuff ✨
Shoutout to our employees whose hard work for our team every day! You’re the reason Cornerstone runs smooth(er than a jelly-filled donut!) 🙃
There’s got to be some Star Wars fans that follow us… right? 😅 But seriously, we are urgently hiring for a Systems Administrator in Colorado Springs, CO! If you’re burned out where you currently are check out the details below. 👇🏻👇🏻Link in comments to our careers page if you want to learn more!
🛰️ TS/SCI clearance required
📍 On-site in Colorado
💻 Real work. Real impact. No red tape.
🫶 Join a company where you’re not just a number
As we reflect on Memorial Day this coming Monday, we pause to remember and honor the brave men and women who made the ultimate sacrifice for our country.
At Cornerstone Defense, we never forget our roots as our company was founded as a Service-Disabled Veteran-Owned Small Business. With over 33% of our team made up of Veterans, their service is not just part of our story—it’s at the core of who we are.
As we enjoy time with loved ones this weekend, we remain grateful for those who gave everything to protect our freedoms.
We honor their legacy by continuing our mission: supporting the Aerospace, Defense, and Intelligence Communities with dedication and purpose.
🧠 May is Mental Health Awareness Month
At Cornerstone Defense, we believe mental wellness isn’t a once-a-year topic—it’s a daily priority. 💚
We’re all juggling deadlines, meetings, and life outside of work. So how do you protect your mental health during the day without adding more to your plate?
Here are 5 simple tips we love to keep calm, focused, and well—right in the middle of your workday 👇
✨ Our Favorite Midday Mental Health Boosters:
• 💻 Take Breaks—On Purpose
Step away from the screen, breathe deeply, stretch. You’ll return with more clarity (and less stress).
• 🌞 Get Outside (Even for 5 Minutes)
Fresh air and sunlight are instant mood boosters. Even a quick walk counts.
• 🥗 Fuel Your Body, Feed Your Brain
Choose real food over desk snacks, and keep that water bottle close—hydrated brains think better.
• 🎧 Listen to Music That Calms You
Lo-fi, nature sounds, or your go-to chill playlist can help you reset and refocus.
• 🧘♀️ Move Your Body, Shift Your Mood
Stretch. Stand during a meeting. Take the stairs. A little movement = a big mental boost.
✅ Your mental health matters—at work and beyond.
Tag a teammate, share with your network, or try just one of these today. Your mind will thank you. 💬
🚨 Recruiting: the ultimate mix of strategy, patience, and memes. 😅
Today we’re giving a well-deserved shoutout to our amazing recruiters who work tirelessly behind the scenes to connect incredible talent with meaningful missions.
We know recruiting is a grind—and no one does it better than this crew. 💪
Enjoy a few memes that got us giggling today. 😂
💻 Ready to make a move? Check out our open positions on our job board (cornerstonedefense.com/careers) and reach out today — our awesome recruiters are waiting to talk to you! 🙌🏻🙌🏻
