Jakub Bujko
React Native Developer
Krakow, Lesser Poland Voivodeship
Summary
🤩
Rockstar🎓
Top SchoolJakub Bujko is a React Native developer with 10 years of cross-disciplinary experience combining front-end engineering, UX design, SEO/SEM, marketing and sociology to shape user-centric mobile experiences. Currently at Callstack, he contributes to performance-focused tooling and CI-driven testing—having implemented a Danger.js plugin and GitHub Actions integration for React Native performance analysis. His background as a project manager, country manager at Brainly, and a freelance translator for Japanese gives him uncommon product and international communication skills that inform pragmatic, reusable solutions. Driven by continuous improvement and a dislike of repetition, he favors universal, maintainable patterns that scale across use cases.
10 years of coding experience
8 years of employment as a software developer
Doctor of Philosophy (Ph.D.) Japanese Studies, Doctor of Philosophy (Ph.D.) Japanese Studies at Jagiellonian University
Chinese, Japanese, English, Polish
Github Skills (10)
testing10
regression10
github-ci10
javascript10
performance-monitor10
performance-analysis10
react-native10
githubaction-workflow10
performance-testing10
react9
Programming languages (2)
Github contributions (5)
callstack/reassure
Mar 2022 - Dec 2022
Performance testing companion for React and React Native
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:41 reviews, 23 commits, 12 PRs in 9 months
Contributions summary:Jakub primarily contributed to the integration of a performance testing framework within the existing React Native project. They developed a plugin utilizing Danger.js to integrate performance test results from an external output file, providing warnings or messages based on the analysis. This involved modifying the CI/CD configuration with GitHub Actions to run performance tests and integrating the analyzer script to report test results, and also fixed issues in the analyzer such as duplicate entries.
regressionreactreact-nativetestingperformance
Xiltyn/JB
Aug 2016 - Jan 2017
Contributions:2 PRs, 83 pushes, 31 branches in 5 months
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