who we are

about set of x

We place the industry’s top technical talent in the critical roles of the U.S. Government customers’ most critical missions.


Set of X is led by industry veterans who see government contracting as a good community with plenty of opportunity to go around.

With a shared desire to give back, grow the community, and do great work, the Set of X team is building an elite group of engineers with a strong sense of shared responsibility and ownership.

Because who you work with matters.

Paul Barsotti

Co-founder + Chief Executive Officer

Quentin Smith

Co-founder + Chief Operating Officer

Rachelle Walker

Co-founder + Chief Administrative Officer


Julia Buechler

Julia Buechler

Vice President,
CNO Development

mark evans

Mark Evans

Vice President,
CNO Architecture + Engineering

mark evans

Kenji Horvath

Vice President,
Enterprise Software Solutions

Julia Buechler

Jon Kuntz

Vice President,
Systems Engineering

We think it’s a pretty good place to be.

But don’t just take our word for it. Here’s what some of our team has to say:

julia buechler

Our leaders are trusted by partners to provide talented individuals. Laser focused on serving the employee’s best interests. Proven capability to handle the unexpected. 

– Julia Buechler

we build essential solutions with good people.

We put key talent in critical places and we do it with a strong sense of responsibility to the mission and a shared sense of belonging.