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.
Learn More
✨ Behind the scenes at Cornerstone! ✨
Yesterday was all about striking a pose. 📸 Big things are on the horizon for 2026, and we can’t wait to share what’s coming your way! 🚀 Stay tuned, because this is just the beginning… 👀 What do you think our photo shoot was for!? #CornerstoneCrew #BTS #NewYearNewLook
We don’t care what you want to be called, but if you call yourself any of the titles on the list, below, you might be a great fit for one of the many hot jobs we had drop this week! 🔥🔥🔥 Scoot on over to our website to find our careers page — we’d love to hear from you!
🎶 Now Playing: Your Next Career Jam! 🎶
🔥 We’ve got a mix tape of the hottest tracks… except these tracks are our open roles!
💿 Press play on your future and turn up the volume on your career.
✨ Side A: Career Groove — find your rhythm, master your craft
✨ Side B: Big Career Move — take the mic, lead the set, own the mix
✨ Bonus Track: Your Dream Job
📼 Retro mix tape vibes, fresh opportunities —👉 We’re hiring NOW—drop the beat and apply today!
🎧 #NowHiring #CareerMixTape #JoinTheBand #HotJobs
“We found the most peculiar message on a walk through the snow yesterday — watch through to see what it says!” ❄️👀
With the recent snow storms, we’re leaning into the cozy vibes—tell us below: How much snow did you get where you are? And what’s your favorite snow‑day tradition—pot roast simmering all day, sledding, board games? 🍲🛷🧣
But most importantly, if building mission‑driven tech with a tight‑knit team sounds like your kind of winter adventure, come join us. We’re hiring now! 💼✨
Spin the bottle, but make it mission-ready. 😂🚀When the options are Big Corp, Flashy Promises, Speed-Over-Fit, and a team that actually cares—we’ll choose the long game every time.
Big Corp has binders. Flashy Promises has glitter. Speed-Over-Fit has shortcuts. We have years of choosing the right people for the mission—and showing up for them, long after day one.
If you value accountability, trust, and the big picture, you’ll see why the bottle stops on us!
