You are changing the world

We build software for enterprises and startups in a variety of industries

One of Central Europe’s fastest growing companies

Transforming businesses with a wide range of services

Tailor-made software for enterprises and startups

Experts in the Java platform and native mobile development


Technology Fast 50 CE 2019
Technology Fast 500 EMEA 2020
Top B2B Companies in Croatia 2021



  • Discovery
  • UI Design
  • UX Design


  • Full Stack Development
  • Native Mobile Apps
  • Delivery

Working Models

  • Dedicated Team Extension
  • Turnkey Development
  • Consulting


  • Banking
  • Insurance
  • FinTech
  • Government
  • Construction
  • Oil & Energy
  • Pharmaceuticals
  • Telco
  • IT
  • Healthcare
  • Event
  • E-Commerce



  • Angular
  • React
  • Vue


  • Java Spring Boot
  • Scala
  • Kotlin
  • Python
  • .NET Core

Native Mobile

  • Swift
  • Objective C
  • Java
  • Kotlin

Client Talks

“Working with Agency04 helps us to realize our product dreams become a reality. Having skilled engineers from Agency04 helps us to deliver feature after feature, time over time. The dedication of these engineers makes the work happen.” – Andreas Prins, VP Product Strategy at Project details
15 Project specialists
5+ years project duration


“As a Product Owner my job is to provide the team with user stories which I get from the stakeholders, or rather users. Agency04 helps me a lot with that, they give me the possibility to present interactive prototypes to show the stakeholders/customers how the end product will look like when it’s developed. This way we get results a lot faster.” – Melanie Breier, Product Owner at Strabag Project details
6 Project specialists
2+ years project duration

Iskon Internet

“I’m very happy working with Agency04, they’re highly professional, and what I love most is they always come up with great ideas for our needs. Agency04 consultants conducted a user experience research in which they shadowed our agents, seen how they work and came up with a prototype of a single user interface that fits nicely with Camunda BPM” – Luka Samarzija, Head of Business Support Systems at Iskon Project details
10 Project specialists
3+ years project duration

A1 Telecom

“Given that we were a new team and had no experience in Agile project management, Agency04 educated us on how to use Agile, what Agile is, and ultimately helped us find the best methodology for our project. All of this helped us to work as efficiently as possible and also changed the way we think. They transformed us, and we weren’t even aware of it.” – Izeta Samardzic, Senior Digital Customer Experience Consultant at A1 Project details
1 Project specialists
6 months project duration


“I appreciate an open and honest relationship we have with Agency04, and reliability they bring. For every business it’s important to have a right balance between quality and costs, and I believe that with Agency04 we are getting this on a daily basis.” – Ivan Belić, Vice President of Life Science at Amplexor International Project details
17 Project specialists
3+ years project duration


Our people really love it here

Evolution of expertise

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 web and mobile applications, leads digital transformations, and provides consulting services. 

Stability in unstable times

The turmoil of 2020 caused great inconvenience for people all over the world. However, this did not affect our business. Quite the opposite — we not only kept all jobs and salaries intact, but we also grew in size. And we keep expanding. 


Behind great software there's a great story

Every project brings a new learning opportunity. Here’s how we do what we do.
― by Grgo Marić
Agency04 Named Top Custom Software Developer in Croatia by Clutch


Here for the long term

Our clients are our best ambassadors. The years that tie us together speak volumes.

Duration of cooperation

5+ years
Ongoing project
2+ years
Ongoing project
4+ years
Ongoing project
3+ years
2+ years
Ongoing project
4+ years
Ongoing project
14 months
Ongoing project
3+ years
Ongoing project


There is no straight answer to this question. Our experience and practice show that Scrum guided teams of up to 7 people are optimal, provide the best collaboration, and have the necessary knowledge. If the project requires more people, our suggestion is to organize more optimal teams.

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Microservice architectures are not exactly breaking news to software development, but they did come into focus at about the same time as digital transformations in large organizations. Not by chance. Microservice architectures do not only solve technical but also organizational problems. They allow easier division of large systems and business problems into smaller parts and their independent implementation. This allows for smaller teams to work independently, whether in-house or provided by us.

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It is possible, but no more than 50% of the project duration. If it’s remote work, the whole team joins for the project kickoff, an important milestone meeting.

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Let’s start tomorrow! More realistically, from 2 weeks to 2 months, depending on our current resource availability and the required tech-stack.

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Glad to be of service. Can we help with your next project? Let us know!

Let’s find the right answer to your question. Contact us!


We’d love to hear from you