Biliana Valeva
Senior Frontend Developer at E.ON Digital Technology
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolBiliana Valeva is a Senior Frontend Developer based in Berlin with over 10 years building polished user experiences using HTML, CSS, JavaScript, Vue and React. She has driven frontend delivery at companies from Shopify to E.ON Digital Technology, leading teams, shipping features for first‑party apps, and improving developer workflows through prototypes and tooling. Biliana brings a strong background in design-minded engineering—having taught web development and worked closely with product and UX teams—which helps her translate requirements into maintainable, performant interfaces. An active open-source contributor, she has meaningfully improved the widely used stylelint project by adding rules, autofix capabilities and robust tests to elevate CSS quality across the ecosystem. Her toolkit includes TypeScript, Nuxt, Storybook and testing frameworks, and she combines hands-on coding with mentorship and technical documentation to accelerate team velocity.
10 years of coding experience
10 years of employment as a software developer
MSc Interactive Digital Media, MSc Interactive Digital Media at Trinity College DublinBA Journalism and Mass Media, BA Journalism and Mass Media at Aristotle University of Thessaloniki (AUTH)BA Modern Greek Language, BA Modern Greek Language at Sofia University St. Kliment Ohridski
Bulgarian, Greek, English
Github Skills (9)
css10
linter10
javascript10
testing9
postcss8
lint7
conventions7
naming-conventions7
enforcement7
Programming languages (2)
Github contributions (5)
stylelint/stylelint
Mar 2018 - Apr 2019
A mighty CSS linter that helps you avoid errors and enforce conventions.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:10 commits, 10 PRs, 11 comments in 1 year
Contributions summary:Biliana contributed extensively to the `stylelint/stylelint` repository, focusing on enhancing the linter's functionality and user experience. They implemented a new rule to limit the number of pseudo-classes, added autofix capabilities to existing rules, and addressed issues related to case sensitivity and empty lines. Their work involved modifying core rule logic and test cases to ensure accurate and consistent code style validation, improving the overall usability of the linter.
csslinterpostcsslintenforce-conventions
Bilie/conversational-ui-with-flexbox-demo
Jan 2019 - Mar 2021
Conversational UI with flexbox demo
Contributions:9 commits, 3 PRs, 9 pushes in 2 years 2 months
conversational-uiflexbox
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.