Search Quality Assurance with AI as a Judge
Deep dive into how Zalando builds a search quality assurance framework with LLM-as-a-judge to evaluate the search... Read more...
Tao Ruangyam
Senior Software Engineer
Mar 17
2026
Migrating jackson-datatype-money to FasterXML: A Case Study in Open Source Consolidation
How we integrated jackson-datatype-money into the official FasterXML Jackson ecosystem. Read more...
Sri Adarsh Kumar
Senior Software Engineer
Mar 09
2026
Why We Ditched Flink Table API Joins: Cutting State by 75% with DataStream Unions
The beauty of a high-level abstraction is that it lets you focus on the "what" rather than the "how." In the world... Read more...
Maryna Kryvko
Senior Software Engineer
Mar 04
2026
Running an Engineering Papers Reading Guild at Zalando
In September 2024, we started an Engineering Papers guild at Zalando to read and discuss research papers together. A... Read more...
Danilo Veljovic
Senior Software Engineer
Mohit Karekar
Principal Software Engineer
Jan 29
2026
Paper Announcement: A Practical Approach to Replenishment Optimization with Extended (R, s, Q) Policy and Probabilistic Models
Learn how the ZEOS replenishment optimization system achieves up to 22.1% GMV uplift by unifying probabilistic... Read more...
Alva Presbitero
Senior Applied Scientist
Andreas Syrén
Senior Principal Applied Scientist
Hagop Dippel
Applied Science Manager
Lalita Awasthi
Junior Machine Learning Engineer
Shikhar Dev
Senior Machine Learning Engineer
Zhe Nie
Senior Applied Scientist
Jan 15
2026
Contributing to Debezium: Fixing Logical Replication at Scale
How we contributed two features to Debezium to solve WAL growth and enable safer logical replication for our event... Read more...
Conor Gallagher
Senior Principal Engineer
Dec 19
2025
The Day Our Own Queries DoS’ed Us: Inside Zalando Search
Once upon a time, during a normal Sunday, our team ran into an unexpected challenge: an Elasticsearch cluster that... Read more...
Maryna Kryvko
Senior Software Engineer
Ivan Potapov
Senior Software Engineer
Dec 17
2025
Accelerating Mobile App development at Zalando with Rendering Engine and React Native
We present how we combined our internal React-based UI composition framework Rendering Engine with React Native in a... Read more...
Rene Eichhorn
Senior Software Engineer
Oct 03
2025
Dead Ends or Data Goldmines? Investment Insights from Two Years of AI-Powered Postmortem Analysis
Your incidents hold the blueprint to your most strategic infrastructure wins — if you're listening correctly. Read more...
Dmitry Kolesnikov
Senior Principal Engineer
Sep 25
2025
Direct Data Sharing using Delta Sharing - Introduction: Our Journey to Empower Partners at Zalando
In this post, we explain how we transformed fragmented partner data sharing at Zalando by implementing Delta... Read more...
Lokeshbabu Radhakrishnan
Principal Software Engineer
Jul 08
2025