Vlad Portnoy
Front-end Developer at W12.io
Russia
Summary
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SeniorVlad Portnoy is a front-end developer with nine years of experience building responsive web and mobile interfaces, specializing in HTML, CSS and JavaScript and large-scale client architectures. He has deep experience delivering complex UIs and mobile features—from media handling and maps to in-app billing and performant caching—both as a freelancer and as a core front-end engineer at blockchain protocol W12. His work spans Android native stacks (Java/Kotlin) and modern front-end practices, with a pragmatic focus on UX, performance and integration with back-end services and smart contracts. Comfortable shipping end-to-end products, he combines hands-on implementation of client-side systems with experience integrating blockchain-driven workflows and DAO-style governance into user-facing platforms.
9 years of coding experience
5 years of employment as a software developer
Github Skills (89)
jquery-plugin10
vanilla-javascript10
hybrid10
nuxt-template10
input-mask10
maskedinput10
csr10
static-site-generator10
full-stack10
hydration10
vue10
jqlite10
nuxt10
wallet9
mask9
Programming languages (4)
Github contributions (5)
silencerspirit/start_html
Mar 2017 - Oct 2017
Contributions:7 pushes, 1 branch in 7 months
silencerspirit/kolos-layouts
Jun 2017 - Jun 2017
Contributions:17 pushes, 1 branch in 12 days
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