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DevFest Ahlen 2026
Build, secure, scale: Developers and builders in the agentic era
This DevFest season we invite you to reflect on some major shifts in the developer landscape. The role of professional developers is evolving from writing to reviewing code and orchestrating autonomous agents. You can do more, faster, with models and tools that are getting more and more powerful. At the same time, AI is opening the doors for everyone to be a solution builder. It means more people can solve more problems, bringing more diverse ideas to life than ever before.

"Builders" use their skills and AI assistance to build apps, automate, optimize workflows and create solutions for any industry. They use developer tools but can work in different roles including product management or design. Gartner predicts that 80% of technology products and services will soon be built by people who are not professional software developers. In this world, a secure-by-default mindset is more important than ever. So is choosing the right models, platform and tools that match your needs and goals.

DevFest is the world's largest community-driven tech conference, bringing together developers and builders to learn, build and connect https://youtu.be/T8RBES766fk?si=i_AdripqRuqQZ7pg
This is a hybrid event. Join the event virtually at https://gdg.community.dev/events/details/google-gdg-ahlen-presents-devfest-ahlen-2026-online/
or in person at

Initiative Bürgerzentrum Schuhfabrik e.V. - 7 Königstraße, Ahlen 59227

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Agenda

4:00 PM: Speaker Ashutosh S. Bhakare: Building Agents with Eyes and Ears: A Multimodal AI Workshop

Real-world work isn't just text: it's screenshots, documents, images, voice and video. In this hands-on workshop, you'll learn how to build AI agents that can see, hear, reason and act using Gemini and Google's Agent Development Kit (ADK).

We'll go from the anatomy of a multimodal agent to a working multi-agent system with tools, memory and real-time voice, ending with a live demo of an AI lab assistant that diagnoses problems from screenshots.

You'll leave with working code and practical patterns for cost, evaluation, safety and deployment to take your agents to production.

5:00 PM: Speaker Saif Eddine Layouni: Guardrails for AI Agents: Blocking Prompt Injection at the Gateway and in the Code

AI agents are powerful and dangerously easy to manipulate. Prompt injection, jailbreaks, and unauthorized data exfiltration are real threats that most teams discover too late.

In this session, we’ll walk through a defense-in-depth architecture using Google Cloud: Model Armor as the content-filtering layer, Apigee as the governance gateway enforcing policies across every agent call, and ADK after_tool_callback to intercept dangerous tool outputs before they reach the model.

You’ll leave with a concrete threat model for AI agents built on 4 trust boundaries, a working architecture pattern, and code you can implement today.

5:30 PM: Speaker Stefan Cornea: Should the AI Press the Button? Securing AI Agents That Take Real Actions, in Go

We’re wiring AI agents into real apps and handing them real power: calling APIs, changing data, triggering workflows. That turns a chatbot into a new and poorly understood attack surface. This talk is a practical tour of what goes wrong when an agent can act, and how to stop it. We’ll cover the failure modes developers actually hit: prompt injection that turns user input into instructions, over-trusted tool calls, and agents taking irreversible actions with no one watching. Then the defences: treating every tool call as untrusted, separating read-only actions from the ones that change the world, and keeping a human in the loop for anything that matters. Examples are shown in Go, but the principles apply to any stack. You’ll leave able to look at an AI feature in your own app and ask the right question before you ship it: should the AI really press that button on its own?

Key takeaways:

Why “an agent that can take actions” is a security boundary, not just a feature.
Prompt injection explained simply, and why it’s not solved by better prompts.
A design pattern: read-only vs side-effecting tools, with a human confirmation gate for the dangerous ones.
Least-privilege for agents: scope what a tool can do before you trust the model to call it.
The patterns in real Go code: a tool interface that separates safe from dangerous actions and gates the dangerous ones.
A checklist you can apply to any AI feature before release.

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Speakers

Ashutosh S. Bhakare - Unnati Development and Training Centre Pvt Ltd (Chief Executive Officer)

Google Developer Expert (Google Cloud)

Saif Eddine LAYOUNI - ESPRIT (Student)

Organizer @GDG Sousse
Community Lead at Global AI HubEX AI Instructor @GOMYCODE Computer Engineering Student ML Practitioner

Stefan Cornea - Signapse (Software Engineer)

Stefan Cornea is a Software Engineer at Signapse, where he builds high-performance, real-time streaming systems in Go and Rust to power AI-generated sign-language translation and make everyday information accessible. Specializing in low-latency architectures, streaming protocols, and resilient cloud systems across AWS and GCP, Stefan is also the Community Lead for GDG London, …

Hosts

Anna Muzykina - GDG Ahlen Organizer (Technical Founder CTO & CEO @ Proofa)

I’m a dedicated Developer with a strong focus on community building and empowering women in technology. As the GDG Organizer for Ahlen and Münster, I actively foster tech communities and mentor women entering the industry. As a Women in Data Science (WiDS), I provide guidance and support to aspiring women technologists.
With a deep expertise in Dart, Firebase, and AI ecosystems, I specia…

Denys Doroshev - GDG Ahlen Organizer (C0-founder & COO @ Proofa)

I'm a Product Manager and Organizer for Google Developers Group (GDG) Ahlen, where I work to foster innovation, collaboration, and growth within the developer community.
In my professional career, I serve as a Senior Regional Sales Manager at Metal Work Pneumatic, focusing on B2B sales in industries like metallurgy, machine building, and agriculture across Ukraine. I also work as a Tec…

Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-ahlen-presents-devfest-ahlen-2026-online/.

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