Johan Åhlén
Sr. Manager Engineering at Cloudera
Naarden, North Holland, Netherlands
Summary
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RockstarJohan Åhlén is a senior engineering manager based in the Netherlands with over a decade of hands-on experience that began as a full‑stack developer and evolved into leading UI teams for data warehouse and SQL UX at Cloudera. He combines deep technical craftsmanship—authoring custom SQL autocomplete parsers, large-scale UI components, and thousands of UI tests—with people leadership and product-driven road‑mapping. Comfortable across backend and frontend, he has contributed to the open-source Hue project improving SQL parsing and typeahead features that power better analyst workflows. Johan favors involving teams early in roadmap and design to boost ownership and reduce friction, and he channels a lifelong creative streak from design and photography into delivering polished user experiences.
11 years of coding experience
9 years of employment as a software developer
English, Swedish, Dutch
Github Skills (9)
autocomplete10
query-parser10
api10
sql10
apidoc10
parse10
python9
javascript9
front-end-development8
Programming languages (3)
Github contributions (5)
cloudera/hue
May 2015 - Dec 2022
Open source SQL Query Assistant service for Databases/Warehouses
Role in this project:
Back-end Developer
Back-end DeveloperContributions:730 reviews, 8018 commits, 327 PRs in 7 years 8 months
Contributions summary:Johan's contributions were focused on developing and improving the backend functionality of the Hue SQL query assistant, specifically by switching to `structure.json` for parsing in several SQL parsers and by adding support for custom naming and features like handling execution errors, adding "from table" suggestions, and making API improvements. The user worked on the core features related to query parsing and assisting users by adding support for select typeahead in order to allow users to properly execute queries and create dashboards
querysql-editormysqlassistantsql
hortonworks/hue-release
May 2019 - Mar 2021
Contributions:897 commits in 1 year 9 months
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