I design and build tools for working with data. I'm currently helping build MotherDuck, a new type of DuckDB-powered data warehouse. I was previously the head of application engineering at Rill, a highly-opinionated conversation-fast BI tool. Prior to that, I was a data scientist and engineer at Mozilla.
Where to find me
Email
hamilton.ulmer@gmail.com
Twitter
Github
Notes I've written
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finding the smallest available timegrain with DuckDB
Aug 12, 2023
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The writing tool of my dreams; a meditation
Feb 14, 2023
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New Years Resolution
Jan 1, 2023
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TIL: Dominik Moritz's just-enough-precision formatter
Dec 20, 2022
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TIL: dealing with duplicate columns on joins in duckdb & sqlite
Dec 5, 2022
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Orchestral Auditions: or, a most brutal hiring loop
Apr 18, 2022
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duckdb wishlist, two months in: 'is the duck rude?', cancelable queries, memory footprints, & javascript UDFs
Feb 21, 2022
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Immer patches & websocket-based applications
Feb 5, 2022
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How to build a proposal culture
Feb 2, 2022
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Pattern: local-first backend Svelte stores
Dec 30, 2021
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small improvements to the duckdb node module
Dec 21, 2021
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Fun with Fonts: Kass by Cinketype
Dec 21, 2021
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what's in a changelog?
Dec 19, 2021
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The Product Habits Behind Good Internal Projects
Feb 2, 2021
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Good Data Viz is About the Small Things
Nov 11, 2020