Tekkis develops applications that are safe, secure and hacker resistant

Have an Idea for an App?

We build Apps.  It’s what we do and we’re pretty good at it.  Let’s bring your idea to life!

Security in Mind

Worried about your new App being hacked?  Breath Easy.  We merged Security and Programming together to bring you hacker resistant Apps.


Full Stack Development

Our team has been doing this since 1994.  We have experience with any stack you can throw at us.  That’s right, we know a lot about technology new school or old.

Mobile Apps Too

Apple or Android. We don’t discriminate. We’ll get your app on the App Store or Google Play.

About Tekkis

The mantra of any good security engineer is: 'Security is a not a product, but a process.' It's more than designing strong cryptography into a system; it's designing the entire system such that all security measures, including cryptography, work together. — Bruce Schneier

A brief history

Our founder, Matt Rosentrater has ingrained his philosophies into Tekkis.  It was his belief that applications can be written so that they perform well, are secure in nature, what he calls, ‘Hacker resistant’, and are priced fairly.  In 2007, with these principles, Matt put together his first team of programmers and started teaching them his ways.  Today, Tekkis is building leading edge apps for industries all over the United States while working with its clients in such a fashion that we become part of the team, a transparent layer, a well oiled machine.  Interaction, hospitality, and understanding of our clients needs is the up most importance.  Superb customer service comes from listening.  We value this and bring it with us.


We got awesome skills

Information Security
Go / Golang
PostgreSQL & MySQL
Design UI & UX
C / C++


Meet the core Tekkis team

Our ingenuity will make your ideas possible

Matthew Rosentrater

Matt has been working with computers for over 20 years. When he isn’t cranking on getting out the latest tech, he is Dirt Biking, Skiing, or Timber sledding in the Colorado Rockies.

Alex Burt

Alex has been working with computers since about the day he was born. When he isn’t working on getting your App out, he is working on his Minecraft server. We all tell him to walk away from his server, but he just nods and smiles.


Belle Barnard

Belle has a drive to see companies succeed. She brings 10 years of design and marketing to the table. When she isn’t designing beautiful interfaces, she is Snowboarding or organizing awesome events.

Derek Burkhart

Derek is the glue for the entire company. With his 18 years of intense management and organization skills he keeps us going. It doesn’t matter if it him keeping us on track or bringing lots of coffee and energy drinks.

Contact us

We would love to have the opportunity to discuss your next big project!

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Tekkis Corporation
Thornton, Colorado