Mariusz Kaczkowski
Staff Software Engineer at Box
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMariusz Kaczkowski is a Staff Software Engineer with eight years of progressive experience building and leading front-end teams across fintech, logistics, and enterprise SaaS, now at Box in Warsaw. He blends deep JavaScript and modern front-end expertise (React, TypeScript, Webpack) with hands-on leadership from roles at Moss, Glovo and Goldman Sachs, consistently improving usability before reusability. He has founded a product engineering shop and shipped mobile hybrid apps for public platforms, demonstrating both startup agility and enterprise delivery. Educated in computer science and advanced programming, he pairs technical craft with project management skills to drive predictable outcomes. Colleagues rely on him for pragmatic architecture, mentoring, and turning complex UI requirements into maintainable, user-centered interfaces.
8 years of coding experience
15 years of employment as a software developer
Project Management, Project Management at Warsaw University of TechnologyAdvanced Programming, Advanced Programming at Instituto Superior Técnico
English
Github Skills (16)
goodies10
boilerplate9
react-boilerplate9
react8
static-site7
react-static7
webpack7
static-site-generation6
marketing6
markdown5
site-generator4
redux4
hyper3
static-site-generator3
progressive3
Programming languages (1)
Github contributions (5)
mkaczkowski/modern-react-starter
Apr 2018 - Oct 2018
Minimal React boilerplate with all modern goodies
Contributions:1 release, 22 commits, 4 PRs in 5 months
babelreactreact-boilerplateboilerplateminimal-react
mkaczkowski/webstorm_settings
Dec 2017 - Oct 2018
Contributions:367 pushes, 1 branch in 10 months
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