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Yazı tahtası üzerinde bir not kağıdına yazılmış "scrum team" arka plan fotoğrafı

Who are we?

We are software engineers  which has more than 15 years of experience in developing and managing software projects for the world's largest companies in Germany, and set out with the aim of bringing the technology know-how from Germany to Turkey.

Yazı tahtası üzerinde planlamalar ve grafikler göstrilen bir görüntü

How Our Story Began

defia is a software company that has been producing software since 2013. We set out with the aim of bringing the experience and technological know-how we gained in Germany to our country. With the office we established in Istanbul, we continue to expand our team and develop our projects. We move forward with the goal of providing benefits to domestically sourced products and services in Turkey and developing solutions that improve existing systems.

Our Vision and Mission 

We would like to share the technological know-how we have gained in Germany, especially with machine and device manufacturers. In this way we hope to help offer more competitive products on the European market. If you are looking for a competent partner in software development and web-based applications on desktop or embedded platform, choose defia!

15+ Years of Experience

We produce software for every system where machine and human or machine and machine are in communication with experts who have successfully delivered dozens of projects in the sector for more than 15 years.

Masa üzerinde büyüteçle kontrol edilen bir çipin görüntüsü

Unique Design

Today, the software industry is everywhere and it has become a necessity, but the usability or easy understanding of a solution is often in the background. We are assertive in this regard and believe that we stand out by making a difference.


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We find tailor-made and the most outstanding solution for you.

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It' always our pleasure to contribute to your business.

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We thoroughly test our smooth and fast-running services and stay in touch with you.

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We offer the latest technology and quality service to suit your needs.

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Customer oriented

Each solution is developed specifically for you, your users and your needs.

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Work Tracking

We manage our projects with the latest tools and methods.

defia'nın hizmetlerini iafede eden ikonların yan yana dizilmiş halini içeren bir görüntü

Would you like to bring your business to perfection and make a difference?


Our primary goal is to increase your productivity with error-free, fast-running software.  Together with you, we shape the digital future with solutions that are easy to understand and tailored to you.


For your questions:

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