Our Mission

Mobile technology represents a massive paradigm shift in our industry. Mobile device sales now easily outpace PC sales, and their ability to engage and interact with users in unprecedented ways offers incredible challenges and opportunities.

Our company, iDevConcepts, was founded by 3 veteran software pros who are passionate about technology and are excited about how mobile can and will impact people's lives. Our mission is to implement cutting-edge mobile solutions and strategies for our clients.

In addition to our passion for technology, we also realize that a successful project depends on talent and determination. We have high expectations and standards, so we are consistently engaged in solving difficult problems for our clients. Our clients' success is our success and we are not satisfied unless our clients are 100% pleased with our work. We take pride in our work and we love what we do!

Our Leadership Team

Mario Mamalis

Mario is a co-founder and Director of Software Architecture at iDevConcepts. His passion for software development has been the driving factor in his career. He has extensive experience in architecture and development of software applications of various size and complexity. Mario has a natural ability to solve complex problems while providing clear and effective solutions. He enjoys learning new technologies and mentoring other developers. He graduated from the University of Illinois at Chicago in 2000 with a degree in Information and Decision Sciences. In his free time he enjoys playing soccer, practicing martial arts and traveling.

Derrick Willer

Derrick is a co-founder and Director of Mobile Development at iDevConcepts. He has a passion for tech and continually explores the new ways mobile technology is impacting people's lives and increasing opportunities for client engagement. Derrick attended the University of Chicago and has worked in IT across many business sectors during his career including: digital marketing, insurance, education and healthcare. He has worked for organizations ranging from Fortune 500 companies to universities to start-ups. In his downtime, Derrick enjoys tennis and golf, as well as traveling around the world with his wife and 2 children.


  • iDevConcepts created a unique, functional and easy to use website for Olympiacos Soccer Club Chicago. The design is our "brand identity" as we represent a European professional soccer club. We need to ensure that we remain professional at all aspects of our business and our website is an extension of that. The iDevConcepts team is a pleasure to work with, they take pride in their work, and go the extra mile to get the job done right. Thank you from Olympiacos Chicago!

    John Kosmas, Director - Olympiacos Chicago
  • iDevConcepts was an essential part of helping Innovative Exams establish it's next generation registration and scheduling website. They assisted with the development of our website with the utmost care and expertise that we were looking for. They stay current with the latest and greatest in web technologies and implementation methods. They provided the essential services we needed when getting our website launched due to their versatility with web development. Their communication and dedication to our project was excellent, we were very happy to work with iDevConcepts.

    Frank Silva, Director of Client Services - Innovative Exams