About Us

Hey there, fellow tech enthusiast! We're thrilled to introduce you to Tridesetri, a passion project born from the collaborative minds of Tijana Naprta, Dejan Demonjić, and Ivan Milutinović. We're not your typical software development and SEO company – we're a trio of problem solvers and digital dreamweavers, dedicated to crafting custom solutions that truly make a difference.

Our Vision

At Tridesetri, we're all about bridging the gap between innovation and practicality. We envision a digital landscape where cutting-edge technology is seamlessly integrated into everyday life. Our dream is to empower businesses with tailored software, user-centric designs, and SEO strategies that propel them to the forefront of their industries.

Our Mission

Our mission is simple: we're here to turn your ideas into reality. Through collaboration, creativity, and coding prowess, we aim to transform your challenges into opportunities. We're not just developers – we're partners in your journey, offering guidance, expertise, and a friendly face to guide you through the tech maze.                  

Our Founders

Meet the minds behind Tridesetri

Dejan Demonjić

Hey, I'm Dejan – a developer with a penchant for clean code and innovation. My journey began way back in '98 when a certain hacker movie got me hooked on coding possibilities. With over 14 years in the field, I'm all about perseverance and simplicity. Let's build solutions that amaze, shall we?

Ivan Milutinović

I'm Ivan, the backend guy who believes every complex problem has a mathematically elegant solution. From POS systems to dental software, I've been turning challenges into digital poetry. My mission? To weave data models into functional art that wows and works.

Tijana Naprta

Hi, I'm Tijana – a .NET aficionado who's all about turning lines of code into transformative experiences. With a background in RFID and .NET, I've journeyed through various industries, always seeking innovation. Let's collaborate and turn your vision into a digital masterpiece.

Our Tridesetri Spirit

We're not just developers – we're dreamers, problem solvers, and your technology partners. Our united passion for turning the complex into the comprehensible drives us forward. Whether it's custom software that streamlines your operations, SEO strategies that give your brand a voice, or seamless user experiences that create lasting impressions – we're in this journey with you.

Let's start a new project together!

We're excited to collaborate and build a future that's as bright as your imagination.

So, ready to hop on this adventure together? Let's create and Tridesetri-fy your digital world!


Narodnih heroja 43
11070 Belgrade, Serbia

Account No
NLB Komercijalna Banka

Tax ID

Identification No


+381 69 3333 201
+381 69 3333 202
+381 69 3333 203


Custom Solutions
SEO Services

Feedback information 

Please send us your ideas, bug reports, suggestions!
All your feedback is very important to us!