Marcin Wiśniowski
Technical Lead at Opera
Wroclaw Metropolitan Area Poland
Summary
👤
Senior🎓
Top SchoolMarcin Wiśniowski is a Technical Lead with 15 years of hands-on experience building high-performance web and mobile applications, currently leading engineering at Opera from Wrocław. He combines deep JavaScript expertise across frontend and backend (React, React Native, Angular, Backbone, Express/Koa) with practical systems skills in CI/CD, testing and performance optimization. Marcin has a track record of solving challenging UI problems—e.g., rendering a 150k+ word book with smooth kinetic pagination on mobile canvas while maintaining ~60fps—and offloading heavy computation to WebWorkers to manage memory and responsiveness. His background spans architecture and leadership roles at Vewd and Opera TV, a startup co-founder stint, and solid backend experience with PHP frameworks and caching systems. Comfortable across Linux, Emacs and modern build pipelines, he blends pragmatic engineering with an eye for measurable quality and test coverage.
15 years of coding experience
14 years of employment as a software developer
Politechnika Rzeszowska im. Ignacego Łukasiewicza
English
Stackoverflow
1,271reputation
275kreached
19answers
1question
ajax
top-5%
Github Skills (143)
e2e-testing10
cms10
dashboard10
cfml10
testing10
automation10
browserify10
jscodeshift10
web-testing10
javascript10
webdriver10
no-code10
chromium10
webkit10
browser-automation10
Programming languages (6)
Github contributions (5)
shfx/emacs.d
Jan 2011 - Jan 2022
emacs dotfiles and plugins
Contributions:56 commits, 2 PRs, 171 pushes in 11 years 2 months
vimemacs-dotfilesspacemacsmagitemacs
shfx/zmk-config
Feb 2024 - Mar 2025
Contributions:1 PR, 37 pushes, 1 branch in 1 year
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