9 About Us

The mission hasn’t changed.
The methods should.

Our why

Insiders. Outsiders.
Disruptors.

We started ATX Defense because too many good teams are being crushed by broken systems. People working in defense and national security shouldn’t have to fight through red tape, inflated costs, or needless complexity just to serve. We’re a small but fierce technology firm building common sense solutions to problems others have turned into profit centers. We do the hard work for the right reasons—because the mission, and the people behind it, deserve better.

Our why. Insiders. Outsiders. Disruptors.
From the front line to the firewall.
From the front line to the firewall.

From boots on the ground
to code in the cloud.

ATX Defense is a Service Disabled Veteran Owned Small Business (SDVOSB) founded by Army combat veterans with experience at NSA, CIA, DIU, and the Pentagon. We’ve been operators, assessors, and engineers inside the wire. From cyber compliance to digital transformation, we don’t just know the technical terrain — we’ve helped shape it.

With deep expertise, a moral backbone, and a streak of rebellious grit, we reengineer entrenched, broken systems that hold national security back, so progress isn’t strangled by legacy thinking.

Shawn Kotoske

Shawn Kotoske

Co-Founder

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As co-founder and managing partner of ATX Defense, Shawn Kotoske relies on his 15+ years of experience leading large-scale organizational change at the intersection of national security, technology, and business operations. Before launching ATX, he served as Chief Process & Analytics Officer at Public Consulting Group, where he guided strategy and execution across project management, business process improvement, product development, and data analytics. Earlier in his career, he helped drive transformation for high-visibility federal missions, building a reputation for aligning operational efficiency with mission impact. Based in Austin, he is passionate about making complex systems simpler, stronger, and more effective for the people who rely on them most.

Zach Walker

Zach Walker

Co-Founder

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As co-founder and managing partner of ATX Defense, Shawn Kotoske relies on his 15+ years of experience leading large-scale organizational change at the intersection of national security, technology, and business operations. Before launching ATX, he served as Chief Process & Analytics Officer at Public Consulting Group, where he guided strategy and execution across project management, business process improvement, product development, and data analytics. Earlier in his career, he helped drive transformation for high-visibility federal missions, building a reputation for aligning operational efficiency with mission impact. Based in Austin, he is passionate about making complex systems simpler, stronger, and more effective for the people who rely on them most.

Shawn Kotoske

Shawn Kotoske

Co-Founder

Read more

As co-founder and managing partner of ATX Defense, Shawn Kotoske relies on his 15+ years of experience leading large-scale organizational change at the intersection of national security, technology, and business operations. Before launching ATX, he served as Chief Process & Analytics Officer at Public Consulting Group, where he guided strategy and execution across project management, business process improvement, product development, and data analytics. Earlier in his career, he helped drive transformation for high-visibility federal missions, building a reputation for aligning operational efficiency with mission impact. Based in Austin, he is passionate about making complex systems simpler, stronger, and more effective for the people who rely on them most.

Zach Walker

Zach Walker

Co-Founder

Read more

As co-founder and managing partner of ATX Defense, Shawn Kotoske relies on his 15+ years of experience leading large-scale organizational change at the intersection of national security, technology, and business operations. Before launching ATX, he served as Chief Process & Analytics Officer at Public Consulting Group, where he guided strategy and execution across project management, business process improvement, product development, and data analytics. Earlier in his career, he helped drive transformation for high-visibility federal missions, building a reputation for aligning operational efficiency with mission impact. Based in Austin, he is passionate about making complex systems simpler, stronger, and more effective for the people who rely on them most.

News & Events

What’s happening in our world.

Browse recent ATX Defense announcements, insights, and updates to see the latest on CMMC and digital transformation. Want to stay in the know? Sign up to get updates delivered to your inbox.

ATX Defense Debuts at #1779 on the 2025 Inc. 5000 List

CMMC Explained: Zach Walker Breaks Down the Final Rule

Top Takeaways from September’s Cyber AB Town Hall

Our partners and ecosystem.

CYBER AB
U.S. Department of Defense
Google
Hypori
SDVOSB
SentinelOne