karen Frontend developer working with TypeScript, Rust, React, Angular, Node.js, and Ethereum technologies.
karen Frontend developer working with TypeScript, Rust, React, Angular, Node.js, and Ethereum technologies.
Career
karen is from Belgrade.
karen holds an MS Aerospace Engineering from Moscow Aviation Institute.
Grantee at Ethereum Foundation from 2025-10 to 2026-04Contributor to Helios (a16z's Ethereum light client) and Kohaku SDK (a privacy-first project by Ethereum Foundation)
Introduced dramatic improvements in Helios performance and compatibility with JS ecosystem, integrated into Kohaku.ESSenior Software Engineer at EPAM Systems from 2021 to 2025Built new checkout pages, integrated with new payment providers for an EU ecommerce store with 2 million monthly users. Ran 100+ sophisticated A/B tests of marketing campaigns and website features.
Learning Support Specialist at Yandex Practicum at Yandex from 2019 to 2021Guided thousands of students through programming challenges and technical troubleshooting.L(Founder at locarb.org (blog about diet) from 2017 to 2021Had 12,000+ email subscribers and hundreds of paying customers, built a pre-chatgpt era chatbot