Javier Alvarez
Senior React Native Engineer
Barcelona, Catalonia, Spain
Summary
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SeniorJavier Alvarez is a Senior React Native Engineer based in Barcelona with 14 years of professional experience and a 17-year background in software development, specializing in mobile and frontend engineering for both iOS and Android. He has driven end-to-end mobile product delivery at companies from startups to enterprise—defining tech stacks, CI/CD, testing strategies and mentoring teams at Banco Itaú and leading the Preply app since 2021. Javier brings full-stack sensibility from earlier Node.js and frontend work, enabling pragmatic integrations with GraphQL, AWS and native modules when performance or platform features demand it. Comfortable across the product lifecycle, he has hands-on experience with real-time systems, Swift native bridges, and automated testing (Detox/Jest), often owning architecture and developer workflows in small teams. Known for blending deep technical craftsmanship with product-minded collaboration, he thrives where cross-functional influence and shipping polished mobile experiences meet.
14 years of coding experience
7 years of employment as a software developer
Stackoverflow
8,912reputation
1.4mreached
35answers
7questions
lodash
top-1%
browser
top-5%
php
top-5%
jquery
top-5%
facebook
top-1%
requirejs
top-5%
Github Skills (200)
amazon-cognito10
animated10
pinch10
pouchdb10
api10
cloud-services10
sst10
lodash10
fill10
segment10
amplify10
aws-amplify10
storage10
react-native-component10
textinput10
Programming languages (10)
Github contributions (5)
neiker/barrita
Apr 2014 - Feb 2015
Contributions:19 commits, 1 push, 2 branches in 10 months
neiker/analytics-react-native
Oct 2016 - Jun 2019
The hassle-free way to integrate analytics into any React Native application. https://segment.com/libraries/node
Contributions:3 releases, 33 commits, 184 PRs in 2 years 9 months
analyticsreactreact-nativejavascriptsegment
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