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24th October 2025
09:00 - 17:00

10+ speakers & project pitch sessions over 2 stages

Mobile | Web | Cloud | AI

Food, drinks, a lot of networking
Medium to semi-huge after-party

Featured Speakers

Meet some of the amazing experts who will be sharing their knowledge at DevFest 2025

Andre Sara

Andre Sara

Chief Technologist at DXC Technology

Ethical Considerations and Responsible AI Development

This session is about the Ethical considerations of GenAI development and use and how developers can use Google Cloud tools like SynthID, Model Armor and building guardrails for their Agents/LLM to protect against malicious actors. Andre has presented this talk twice, once at Brussels Future of European AI and another time at a DXC speaking event (with more than 700 participants!) - it was really well received and very thought provoking as it gives Developers a different perspective on using/developing GenAI.

Jasper Duizendstra

Jasper Duizendstra

Independent Google Solutions Engineer & Expert

Contextvibes: Opinionated AI-Assisted Solution Development

Contextvibes is an open-source initiative Jasper created to master our new AI frontier. This presentation introduces solutions for moving beyond simple prompting into a structured, effective partnership with AI. Contextvibes is an opinionated ecosystem designed to provide our AI assistants with the deep, actionable context they need to be truly valuable teammates.

Dražen Lučanin

Dražen Lučanin

Head of IT Systems and Technical Services at the City of Zagreb

Open data and open APIs for efficient city management

Dražen will explore how open data and open APIs can improve city management, showcasing initiatives like the City’s Open Data Portal, real-time traffic regulation app, Waze and Google Maps integrations, and the evolution of public transport data through the ZET info v2 case study.

Matthias Geisler

Matthias Geisler

Senior Software Engineer at Airalo

Let's speak about Accessibility

We will explore practical approaches of making Android apps accessible and how this work naturally improves our development practices. Also, with the European Accessibility Act (EAA) now in effect, understanding these principles isn't just good practice—it's becoming essential for many Android applications and the businesses behind them.

Pitch Your Project!

Got an amazing project or startup idea? Present it to the DevFest community!

1

Have a cool side project, idea, or startup?

Whether you’re working on a side project, have an idea you haven’t started yet, or are running a startup - we want to hear from you!

2

Apply to pitch form

Fill out our application form with details about your project. Applications close September 30, 2025.

3

Present in flexible 10-minute format

You have 10 minutes total. Use it however you want: 5min presenting + 5min Q&A, 7min + 3min, or any combination that works for you!

4

Get feedback, inspire others, find collaborators, get users

Receive valuable feedback, inspire the community, and potentially find collaborators or investors for your project!

11 Pitch Slots Available

Applications close October 12, 2025 • Selected pitchers notified by October 15, 2025

Snaps from DevFest 2024

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Become a Sponsor or Partner

Join us for DevFest 2025! We have a variety of sponsorship packages designed to showcase your brand.

📋 View Our Sponsorship Packages

Discover the amazing opportunities available for your brand at DevFest 2025

Contact us at zagrebgdg@gmail.com
🎯 Brand Visibility🤝 Networking👥 Community

Want to pitch your project at DevFest 2025?

Apply for one of our 11 pitch slots and present your idea to the community! Applications close September 30, 2025.

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Organized by:

GDG ZagrebGDG Krapina