Seriously Custom Software

Custom Software Development

Trusted guidance, global expertise, secure integration. We design and develop custom software solutions that deliver digital transformation at scale.
Contact us
How can we help?

Your Trusted Guide

For over 20 years, we’ve partnered with companies of all sizes and industries to solve their most complex business problems.


We’ve been a top employer in Bulgaria, a country steeped in technical excellence, since 2001. ​​Now with five offices across the country and over 1,000 employees, we expanded outside of Bulgaria to further serve our clients in Europe, the Nordics, and beyond.


Our global team is 100% fluent in English and has adapted their workday to accommodate a four-hour overlap with our Minneapolis office and U.S.-based clients.


Custom Software Development Services

With deep experience in web, mobile, and back-end platforms, our custom software solutions are scalable, flexible, and most importantly, secure.


Our global team takes a personalized and in-depth approach to deliver secure solutions across all industries. As a software services company, we pride ourselves not only on providing world-class custom software development but services ranging from Quality Assurance, Digital Product Design, Digital Experience Platforms, Data and Analytics, Cloud and DevOps, and Software Support.

Web Development
We build applications that work for your business and your users. Whether it’s a complex enterprise platform and data storage, a responsive web app, or a marketing site, our web solutions function smoothly and deliver a consistent experience to users across all platforms.
Mobile Development
Building a mobile app requires a deep understanding of all the tools available in the space. Native apps, progressive web apps, cross-platform tools — each occupies an important place in our mobile development toolset. Our mobile expertise allows us to recommend and implement the best solution for our clients’ goals.
“We had a great experience working with our MentorMate team on this new version of the X-Wing app. Across the board, communication was excellent. The real key to this project’s success was our regular check-ins with the team. We knew exactly what everyone was working on during each sprint which helped us stay on course.”

John Shaffer

Star Wars Marketing Manager, Fantasy Flight Games

Tell Us How We Can Help