Build with AI: LangChain & RAG — Mastering Context for LLMs

Build with AI: LangChain & RAG — Mastering Context for LLMs
Let's prototype, build and deploy applications using the latest Google AI technologies and models, including Gemini, Vertex AI, AI Studio and Antigravity
Date:

February 14th, 2026

ONLINE

What to Expect at Build with AI 2026 in Ahlen:

Get ready for an immersive experience focused on empowering you to architect the future with AI and Cloud!
It's time to prototype, build and deploy applications using the latest Google AI technologies and models, including Gemini, Vertex AI, AI Studio and Antigravity ️

You can expect:

‍ Insightful Tech Talks & Sessions: Learn directly from Google engineers, Google Developer Experts (GDEs), and industry leaders. Dive deep into the practical integration of AI and Cloud ☁️ technologies, exploring best practices, new tools, and successful implementation strategies. ✨
Hands-On Workshops & Codelabs: Move beyond theory and gain practical skills! Participate in interactive sessions where you can experiment with the latest AI/Cloud platforms and tools to build innovative and scalable applications. ️
️ Focus on Responsible Innovation: Engage in crucial discussions and learn techniques for building ethically sound AI solutions. Explore topics like fairness, transparency, privacy, and the responsible scaling of AI-driven systems. ✅
️ Deep Dives into Architecture: Understand how to design robust, scalable, and future-proof systems leveraging the power of Cloud infrastructure combined with AI capabilities.
Vibrant Networking Opportunities: Connect with hundreds of passionate developers from your local community and potentially beyond. Share knowledge, discuss challenges, collaborate on ideas, and build valuable professional connections.
Exploring the Latest Tools: Discover the newest Google developer tools and platforms designed to streamline AI development and Cloud deployment, enhancing your productivity and capabilities.

Google Cloud Credits

We’re planning to offer Google Cloud credits to attendees so you can explore and experiment on GCP after the event.
Activation details and instructions will be shared on-site.

#BuildWithAI

This is a hybrid event. Join the event virtually at https://gdg.community.dev/events/details/google-gdg-ahlen-presents-build-with-ai-langchain-amp-rag-mastering-context-for-llms/
or in person at

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

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Agenda

4:00 PM: Speaker Marvin Naftali Ngesa: A gentle Introduction to RAG with Gemini and LangChain

Session abstract
Developers will dive into the world of Retrieval Augmented Generation (RAG) with this comprehensive workshop. They will be guided through the process of using LangChain and the Gemini API to effectively retrieve and generate information.

Key takeaways:

Gemini fundamentals: Understand the capabilities, limitations, and different models within the Gemini family.
LangChain mastery: Learn how to use LangChain to load, store, and retrieve documents for information retrieval.
RAG pipelines: Build pipelines that combine retrieval and generation to answer complex queries.
Gemini Vision integration: Discover how to integrate Gemini's vision capabilities into your RAG applications.
Q&A chatbots: Create intelligent chatbots capable of interacting with stored documents.
Vector DB: Explore the role of Vector DB in building scalable RAG systems.
This workshop will provide developers, engineers and researchers with a solid foundation in using Gemini and LangChain for RAG applications.

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Speaker

Ngesa Marvin

Ngesa is an Electrical Engineer specialising in Signal Processing and Computer Vision, and passionate about ML developer advocacy, both understanding and adoption. He started his ML journey as an Intel AI Innovator and later joined Liquid Intelligent Technologies as an IoT Solutions Engineer.
He is currently a Device Manager, Safaricom PLC focusing on Cloud & AIoT use cases whe…

Hosts

Anna Muzykina - GDG Ahlen (GDG Ahlen Organizer | GDG Heilbronn | NASA Space Apps Ahlen Lead Organizer | Flutter Developer | WiDS Ambassador)

I’m a dedicated Developer with a strong focus on community building and empowering women in technology. As the GDG Organizer for Ahlen and Heilbronn, 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 spec…

Denys Doroshev - GDG Ahlen (Organizer)

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-build-with-ai-langchain-amp-rag-mastering-context-for-llms/.