Juan Lulkin
Staff Engineer at Personio
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolJuan Lulkin is a Staff Engineer based in Berlin with 15 years of experience building and architecting scalable web platforms across startups and major tech companies like Klarna, Spotify, Choco and Personio. He blends hands-on backend mastery—evident from contributions to the pioneering Catarse open-source crowdfunding platform—with strategic leadership as a former Principal Engineer, Tech Lead and CTO. Comfortable shifting between shipping bug fixes and steering domain architecture, he has a track record of integrating legacy systems, improving reliability, and avoiding fragile dependencies. His background in philosophy and physics informs a pragmatic, systems-thinking approach to product and team design, valuing creation over curation. Pragmatic, curious and entrepreneurial, he has repeatedly turned early-stage ideas into production services and guided teams through growth and technical complexity.
15 years of coding experience
19 years of employment as a software developer
Bachelor's degree Philosophy, Bachelor's degree Philosophy at Federal University of Rio Grande do SulIT Management, IT Management at Universidade do Sul de Santa Catarina
English, Spanish, Portuguese, Hebrew, Italian, ladino
Github Skills (7)
paypal10
rails10
ruby-on-rails10
configuration-management9
api8
git8
tumblr8
Programming languages (17)
Github contributions (5)
catarse/catarse
Dec 2011 - May 2012
The first open source crowdfunding platform for creative projects in the world
Role in this project:
Back-end Developer
Back-end DeveloperContributions:28 commits, 1 issue in 5 months
Contributions summary:Juan's primary contribution involved addressing bugs and improving the functionality of the Catarse crowdfunding platform. This included fixing issues in the PayPal initializer by adding rescue statements to handle potential errors during migrations and other configuration-related issues. Further, they integrated improvements to the code base by merging different branches, which indicate a role in software integration and code maintenance. Their work also encompassed refactoring code to avoid internet connections and finished integration with Tumblr.
crowdfundingreactnextjs
slim-template/html2slim
Mar 2011 - Jul 2013
convert html files to slim
Contributions:21 commits, 7 PRs, 11 pushes in 2 years 4 months
convert-html-filesslimhtml-filesconverter
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