Jakub Linowski
Founder & Lead Designer at Linowski Interaction Design
Old Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolJakub Linowski is a founder and lead designer with 17 years of experience focused on UI design and controlled experimentation, best known for creating GoodUI—a growing repository that meta-analyzes A/B tests to surface repeatable interface and copy patterns. He blends deep design craft (since ~2000) with experimentation expertise (since 2014), helping product and growth teams replicate winning treatments and reduce publication bias. Jakub has collaborated with experimentation teams at companies including Microsoft, TD, Rollbar and others, and studies industry leaders’ leaked tests to extract practical learnings. He is skilled at turning iterative online experiments into generalized heuristics that make optimization more predictable and scalable. Based in Old Toronto, his background spans interaction design, information architecture and running his own design studio, Linowski Interaction Design.
17 years of coding experience
2 years of employment as a software developer
Accelerating Innovation with A/B Testing, Accelerating Innovation with A/B Testing at SphereHonours Bachelor of Design Graphic Design, Honours Bachelor of Design Graphic Design at York UniversityMSc Design for Interaction Industrial Design Engineering, MSc Design for Interaction Industrial Design Engineering at Delft University of Technology
Polish, German, English
Github Skills (5)
agile8
prototyping8
react7
ui-components7
stylesheets2
Programming languages (1)
Github contributions (5)
linowski/fluidia
Feb 2009 - Jan 2011
Contributions:60 commits in 1 year 11 months
agilereactui-componentsprototyping
linowski/EXP-Heuristics
Jun 2024 - Nov 2025
Contributions:3 pushes in 1 year 4 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.