Petr Peller
Freelancer at Petr Peller
Prague, Czechia
Summary
👤
Senior🎓
Top SchoolPetr Peller is a seasoned front-end and full-stack developer with 13 years of experience, now specializing in mobile and cross-platform applications using React Native. As a long-time freelancer and occasional digital nomad based in Prague, he has built end-to-end products for clients across Europe, North America and Asia, ranging from e-commerce and social networks to a Bitcoin marketplace and fitness platforms. He combines hands-on engineering—React, Redux, GraphQL, Jest—with product analysis, prototyping and consulting, often delivering projects from scratch or implementing strategic rebrands and feature sets. Previous roles at Upwork and established Czech e-commerce teams gave him deep exposure to agile, CI-driven workflows and legacy platform maintenance. His academic background spans informatics and medical electronics, reflecting a blend of practical software craftsmanship and analytical depth.
13 years of coding experience
5 years of employment as a software developer
Informatics, Informatics at Charles University in Prague, Faculty of Mathematics and PhysicsMedical Electronics and Bioinformatics, Medical Electronics and Bioinformatics at Czech Technical University in PragueHigh School, Business, Management, Marketing, and Related Support Services, High School, Business, Management, Marketing, and Related Support Services at OA Vinohradská
English, Spanish, Czech, German
Stackoverflow
8,682reputation
1.8mreached
108answers
44questions
rest
top-5%
error-handling
top-5%
uinavigationcontroller
top-5%
jsonp
top-1%
ajax
top-1%
php
top-5%
Github Skills (200)
mobile-development10
ui-components10
apollo-client10
state-machine10
javascript10
safearea10
app-framework10
jsonp10
dao10
apollographql10
ajax10
electron10
typescript10
react-native-component10
cross-platform10
Programming languages (15)
Github contributions (5)
Elijen/angular-popover-toggle
Jul 2015 - Apr 2016
Contributions:13 commits, 1 PR, 16 pushes in 9 months
angularuidirectivepopovermanualangular
Elijen/react-native-fix-headers
Jan 2018 - Nov 2018
Script that automagically adds needed Header Search Path entries for all dependencies in node_modules
Contributions:7 commits, 1 PR, 3 pushes in 10 months
node-modulesdependenciesheadernodejsentries
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