Growing in knowledge, growing in reach

Our Story

We are an award-winning, full-service software delivery agency. As one of Central Europe’s fastest-growing companies, our work spans many industries.

The agency was founded in 2014 by seasoned industry veterans with experience from large enterprises. A group of Java engineers then evolved into a full-service company that builds complex web and mobile applications. We also lead digital transformations and provide consulting services. 

Flexibility is our strong suit — both large enterprises and startups use our services. We are now widely recognized as the leading regional experts in the Java platform and Agile approach.

What once started with 5 people now counts more than 150 satisfied employees. Keeping them happy was always our top priority.

We don’t measure success in the number of products but years of successful partnerships.



A balanced mix of enterprise industry veterans and young talent with experience in international projects.

Mihael Sedmak

Chief Executive Officer

Roko Roic

Supervisory Board Member

Domagoj Madunic

Supervisory Board Member

Dragan Eldic

Chief Operating Officer

Marko Stefancic

Head of Engineering

Harvey Fijucek

Chief Customer Officer

Kristijan Delivuk

Head of Mobile

Vedran Mušura

Head of Project Management

Marijan Palic

Head of Marketing

Davor Bašić

Vice President
Hessen, Germany

Vedrana Kelec

Head of People & Culture

Danijel Sedmak

Head of Finance


Our people really love it here

Personal development

Come and join us if you’re into constant learning, interesting international projects, and inspiring people. Our colleagues feel appreciated and motivated. They see Agency04 as a place where they get to learn from each other and draw from the everyday challenges they face.

In our ranks, you’ll be able to hone your coding skills on relevant, international, and technologically daring projects that keep us well-motivated.

Our diverse client portfolio enables our engineers to work on complex long-term projects like core technologies for Delivery Hero, Blockchain, and NFTs for Fantasy Football or cockpit interfaces for giants like Strabag.

Constant education and knowledge sharing are part of our company culture. Highly experienced mentors will help you out and provide real-time feedback and support.


Technology Fast 500 EMEA 2020
Technology Fast 50 CE 2019
Clients say we deliver on Clutch
Oracle Certification Program.
Camunda Certified Partner.

Our work is gaining recognition. The awards we receive serve as a reminder to work harder.



We’d love to hear from you