Berlin Buzzwords 2025

Dennis Berger

Dennis Berger is a search and software engineer working at Otto. He designs and develops robust search backends using Apache Solr, Rust, and Java. Additionally, he explores ways to integrate emerging technologies with established systems. His work includes crafting microservice-based architectures and finding innovative ways to solve problems. Recognized for his technical precision, Dennis continues to push the boundaries of search with modern technologies.


Company/Organisation

Otto GmbH & Co KG

LinkedIn

https://www.linkedin.com/in/dennis-berger-8a21061a9/


Session

06-16
14:00
40min
What you see is what you mean; intent based ecommerce search
Dennis Berger, Marco Petris, Volker Carlguth

Intent based clustering is our approach to overcome some limitations of modern hybrid search systems. We show how an upfront LLM-supported in-depth query understanding can leverage steps like retrieval, clustering, validation and presentation. We address various aspects from prototype to production in a large-scale high-volume e-commerce search.

Maschinenhaus