Denys Yalomist
Senior Front-end Engineer Engineering Manager (Core Team) at Toptal
Valencia, Valencian Community, Spain
Summary
👤
Senior🎓
Top SchoolDenys Yalomist is a Senior Front-end Engineer and Engineering Manager based in Valencia with over a decade of experience building and modernizing complex web applications using React, Next.js, and TypeScript. He excels at leading teams through large rewrites and migrations—most recently moving a major internal project to a monorepo that cut build times by 40% and CI by 25%—and has reduced technical debt and delivery friction across multiple organizations. Denys designs and implements robust design systems and unified folder structures that scale across teams, and he built a CMS that slashed A/B experiment implementation time by 90%, improving conversion and lead flow. Comfortable across React, Angular, GraphQL and modern testing tools, he blends hands-on coding with mentoring and process design to elevate engineering practices. Pragmatic and detail-oriented, he often anticipates risks and codifies best practices that prevent project failure before it happens.
8 years of coding experience
5 years of employment as a software developer
Master of Arts - MA, Information Systems and Technologies, 85, Master of Arts - MA, Information Systems and Technologies, 85 at Ukrainian Academy Of Customs
Русский, Украинский, Английский
Github Skills (53)
javascript10
typescript10
nodejs10
react10
angular10
multiselect9
user-interface9
autocomplete9
web-developer9
declarative9
web-performance9
frontend9
web-framework9
dropdown8
angular-testing8
Programming languages (2)
Github contributions (5)
MrBra1nwash/typescript-webpack-empty
Aug 2019 - Oct 2020
Contributions:1 review, 4 commits, 2 PRs in 1 year 2 months
MrBra1nwash/image-uploader
Oct 2024 - Nov 2024
Contributions:17 pushes, 1 branch in 7 days
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