Backend
This category focuses on backend, infrastructure, reliability, and programming languages.
Upgrading MLflow Pipelines Across a Python Version Boundary
How we migrated production MLflow models from Python 3.10 to 3.12 without retraining, using a "Load and Repack"... Read more...
Paul Velthuis
Data Engineer
Nargiz Bakhshaliyeva
Applied Scientist
Oct 30
2026
Automating Data Ingestion with a RAG Flywheel
Automating schema mapping for diverse supplier data using a RAG Flywheel and LLMs. Read more...
Tushar Gupta
Software Engineer
Oct 12
2026
Thundering herd of circuit breakers
A client-side circuit breaker stays open for hours, blocking 95% of traffic, and won't close. Our service shows no... Read more...
Valeria Ponyaeva
Senior Software Engineer
Miha Lunar
Senior Software Engineer
Oct 08
2026
Agentic Platform: Open-Sourcing the Agentic Identity Broker
As part of our agentic platform initiative, we are open-sourcing the Agentic Identity Broker, a central component... Read more...
Jan Brennenstuhl
Principal Software Engineer
Magnus Jungsbluth
Senior Principal Software Engineer
Sep 25
2026
Scaling Reliable Experimentation in a Two-Sided AdTech Marketplace: ZMS Budget Split
Budget Split and Orthogonal Concurrency reduce budget cannibalization bias and enable reliable concurrent... Read more...
Stefano Restelli
Senior Product Manager
Carlos Garcia Alvarado
Senior Applied Scientist
Sep 01
2026
From Homegrown to Flink: Migrating a Stateful Ad Event Join at Scale
We replaced a homegrown in-memory stream join with Apache Flink, halved our infrastructure cost, and eliminated... Read more...
Aleksandr Birin
Senior Software Engineer
Jul 24
2026
Client-Side Load Balancing at a Million Requests Per Second
How we built an in-process client-side load balancer for a million requests per second of internal fan-out traffic,... Read more...
Conor Gallagher
Senior Principal Engineer
Jun 23
2026
Introducing Lightstep UQL to PromQL Translator
Automate telemetry query migration from Lightstep UQL to PromQL with this open-source Go SDK and Web UI. Read more...
Maksim Pershin
Software Engineer
Jun 08
2026
Rejecting Invalid Ingress Routes at Apply Time
How Zalando used Skipper as a validating admission webhook to reject invalid filters and predicates at apply time,... Read more...
Veronika Volokitina
Software Engineer
Apr 09
2026
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