Yanko Valera
Senior Software Engineer at Clipboard Health
Madrid, Community of Madrid, Spain
Summary
🤩
Rockstar🎓
Top SchoolYanko Valera is a Senior Software Engineer based in Madrid with over a decade building full-stack web and mobile systems, specializing in Node.js, GraphQL, React and React Native. He has led backend architecture and performance initiatives—most recently refactoring a marketplace pricing engine to enable real-time pricing and raise global book rate by 5% while improving critical endpoint performance by 30% through Postgres-driven refactors. Yanko combines hands-on mobile app development and GraphQL API design, having improved API schemas, cross-platform code sharing, and client-side state to reduce network calls. An active open-source contributor, he has produced practical urql examples that showcase advanced GraphQL client features across React and React Native. His background spans startups, consultancy and enterprise projects in education and eCommerce, giving him a pragmatic product-minded approach to engineering.
11 years of coding experience
17 years of employment as a software developer
Bachelor of Science (BS) Mathematics, Bachelor of Science (BS) Mathematics at IPVCEUniversidad Central "Marta Abreu" de Las Villas
English, Spanish
Stackoverflow
7reputation
172reached
2answers
0questions
Github Skills (15)
graphql-client10
graphql10
javascript10
wordpress-graphql10
wpgraphql10
react10
pagination9
react-native9
exchange8
nodejs6
appcelerator6
hash6
android6
titanium6
facebook6
Programming languages (4)
Github contributions (5)
urql-graphql/urql
Apr 2021 - Sep 2021
The highly customizable and versatile GraphQL client with which you add on features like normalized caching as you grow.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:16 reviews, 23 commits, 28 PRs in 4 months
Contributions summary:Yanko focused on enhancing the "urql" GraphQL client with various example implementations. They added new examples demonstrating the use of `retryExchange`, `persistedFetchExchange`, `multipartFetchExchange`, and pagination. Furthermore, the user created examples that integrate "urql" with React and React Native, showcasing the client's versatility. The majority of the changes involve adapting example applications to showcase advanced urql features.
graphql-clientnormalizedurqlexchangecomplex-apps
yankovalera/nearme
Mar 2017 - Mar 2017
Contributions:9 commits, 8 pushes, 1 branch in 5 days
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