Jan Lehnardt
CEO at The Neighbourhoodie Software GmbH
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolJan Lehnardt is a Berlin-based CEO and open-source veteran with 18 years of experience building offline-first web platforms and developer tooling. He created and contributed to cornerstone projects like CouchDB, PouchDB and Hoodie, and helped launch community initiatives such as JSConf EU and Greenkeeper (automated dependency updates). As Project Management Chair for Apache CouchDB and founder of The Neighbourhoodie Software GmbH, he blends hands-on backend, DevOps and full-stack work with product leadership and a strong stance against outsourcing and recruiter-driven hiring. His contributions span CI/CD and test automation, documentation, and web UI improvements—demonstrating both depth in distributed databases and care for developer experience. Trained in maths, computer science and computational linguistics, he combines technical rigor with a knack for organizing developer communities. A contrarian by nature, he focuses on pragmatic, reliability-driven solutions that scale in real-world, offline-first scenarios.
18 years of coding experience
Maths, Computer Science, Computational Linguistics, English Literature and Linguistics, Maths, Computer Science, Computational Linguistics, English Literature and Linguistics at University of MünsterComputational Linguistics, Computational Linguistics at University of Potsdam
Stackoverflow
2,639reputation
119kreached
59answers
1question
couchdb
top-5%
Github Skills (47)
couchdb10
github-ci10
javascript10
restructuredtext10
fauxton10
github10
back-end-development10
apidoc10
scripting10
databases10
rs10
message-queue10
cicd10
regular-expression10
pouchdb10
Programming languages (25)
Github contributions (5)
janl/mustache.js
Nov 2009 - Sep 2015
Minimal templating with {{mustaches}} in JavaScript
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:321 commits, 10 PRs, 11 pushes in 5 years 11 months
Contributions summary:Jan primarily contributed to the development of the mustache.js templating library. Their work included refactoring code, fixing bugs related to partials and variable handling, and introducing new features such as pragma options and inverted sections. They also worked on whitespace and code style improvements and integrated a dojo-based component. In addition, the user bumped the version and added streaming capabilities.
javascripttemplating
oreilly/couchdb-guide
Aug 2010 - Aug 2019
CouchDB: The Definitive Guide
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:144 commits, 18 PRs, 20 pushes in 9 years 1 month
Contributions summary:Jan primarily contributed to the front-end aspects of the CouchDB documentation website, making changes to the HTML structure and JavaScript code. They fixed JavaScript issues, including missing semicolons, `var` statements, and trailing commas, and also shuffled script tags to improve compatibility across browsers. The user also worked on minor styling adjustments and corrected typos throughout the documentation.
couchdb
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