Filip Jarno
Senior React Native Developer
Greater Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolFilip Jarno is a Senior React Native developer with 11 years of hands-on experience building cross-platform web and mobile applications, currently working at Callstack and previously leading frontend architecture at a Swedish healthtech startup. Self-taught from age 16, he blends deep React and React Native expertise with fullstack JavaScript skills (Node.js, Meteor, MongoDB) and practical backend familiarity across SQL/NoSQL systems. He has taken products from concept to scale, designing performant, maintainable apps used by hundreds of thousands of users and mentoring teams through hiring and technical leadership. Comfortable across frameworks—from Vue and Angular to TypeScript—Filip favors pragmatic, creative solutions to complex UX and performance problems. Based in Greater Poland, he combines formal business education in finance with a developer’s curiosity, often bridging product and engineering priorities in fast-moving teams.
11 years of coding experience
11 years of employment as a software developer
Master's degree, Finance and Accounting, Master's degree, Finance and Accounting at Poznan University of Economics And BusinessInternet and Mobile Applications, Internet and Mobile Applications at Uniwersytet WSB Merito PoznańEKOSJoel E. Ferris High School, Spokane, WA, USA
English, Polish
Github Skills (118)
realtime10
javascript10
reactive-programming10
build-system10
nodejs10
mongodb10
npm10
css10
chrome10
react10
html9
inferno9
computer-vision9
image-processing9
zero-configuration9
Programming languages (6)
Github contributions (5)
ziarno7/prezenty
Jan 2015 - Dec 2015
Contributions:48 pushes, 1 branch in 11 months
ziarno/process-master
May 2017 - May 2017
Contributions:40 pushes, 1 branch in 16 days
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