quentin vanderlinden — writingNotes from the middle of the work — applied maths, data, and shipping fullstack software.https://quentin.dev/enTen years across the stack, and what DevOps taught mehttps://quentin.dev/writing/eight-years-across-the-stack/https://quentin.dev/writing/eight-years-across-the-stack/From React frontends to Kafka and Kubernetes — where owning the whole stack pays off.Wed, 15 Jul 2026 00:00:00 GMTwebAirflow and Polars: turning a multi-week report into minuteshttps://quentin.dev/writing/airflow-polars-killing-a-report/https://quentin.dev/writing/airflow-polars-killing-a-report/How an orchestrated pipeline replaced weeks of copy-pasting code and data by hand.Sat, 02 May 2026 00:00:00 GMTdataConvex optimization for city traffic, in plain wordshttps://quentin.dev/writing/convex-optimization-for-city-traffic/https://quentin.dev/writing/convex-optimization-for-city-traffic/Modelling how pedestrians, cyclists and cars move — and what closing a road really does.Wed, 11 Mar 2026 00:00:00 GMTmathsTyped database migrations from a schema diffhttps://quentin.dev/writing/typed-migrations-from-a-schema-diff/https://quentin.dev/writing/typed-migrations-from-a-schema-diff/Detecting changes to a declarative schema and generating safe, typed migrations from them.Tue, 09 Dec 2025 00:00:00 GMTwebCommunity detection, and what my thesis got wronghttps://quentin.dev/writing/community-detection-thesis/https://quentin.dev/writing/community-detection-thesis/Three modularity-maximization algorithms for fuzzy communities, and the benchmarks that humbled them.Mon, 20 Oct 2025 00:00:00 GMTmathsA data-vault warehouse, ten years onhttps://quentin.dev/writing/data-vault-ten-years-on/https://quentin.dev/writing/data-vault-ten-years-on/What the data-vault architecture got right for an insurer's warehouse — and where it hurt.Mon, 18 Aug 2025 00:00:00 GMTdata