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I am Rostyslav Horytskyi, a Senior Frontend Engineer with 5+ years of experience building high-scale SaaS platforms. I specialize in React and Next.js, with a focus on performance engineering, LCP optimization, and scalable frontend architecture. I have hands-on experience modernizing legacy systems, building robust design systems with Storybook, and delivering complex features in micro-frontend environments. I collaborate closely with backend teams to modernize APIs and ensure reliable data flows for frontend applications.…I am Rostyslav Horytskyi, a Senior Frontend Engineer with 5+ years of experience building high-scale SaaS platforms. I specialize in React and Next.js, with a focus on performance engineering, LCP optimization, and scalable frontend architecture. I have hands-on experience modernizing legacy systems, building robust design systems with Storybook, and delivering complex features in micro-frontend environments. I collaborate closely with backend teams to modernize APIs and ensure reliable data flows for frontend applications.

Rostyslav Horytskyi

Front-End Developer, Web Developer, Full Stack Developer, +2

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I am Rostyslav Horytskyi, a Senior Frontend Engineer with 5+ years of experience building high-scale SaaS platforms. I specialize in React and Next.js, with a focus on performance engineering, LCP optimization, and scalable frontend architecture. I have hands-on experience modernizing legacy systems, building robust design systems with Storybook, and delivering complex features in micro-frontend environments. I collaborate closely with backend teams to modernize APIs and ensure reliable data flows for frontend applications.…I am Rostyslav Horytskyi, a Senior Frontend Engineer with 5+ years of experience building high-scale SaaS platforms. I specialize in React and Next.js, with a focus on performance engineering, LCP optimization, and scalable frontend architecture. I have hands-on experience modernizing legacy systems, building robust design systems with Storybook, and delivering complex features in micro-frontend environments. I collaborate closely with backend teams to modernize APIs and ensure reliable data flows for frontend applications.

Available to hire

I am Rostyslav Horytskyi, a Senior Frontend Engineer with 5+ years of experience building high-scale SaaS platforms. I specialize in React and Next.js, with a focus on performance engineering, LCP optimization, and scalable frontend architecture.

I have hands-on experience modernizing legacy systems, building robust design systems with Storybook, and delivering complex features in micro-frontend environments. I collaborate closely with backend teams to modernize APIs and ensure reliable data flows for frontend applications.

Skills

Experience Level

Expert

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Language

Ukrainian

Fluent

English

Advanced

Czech

Beginner

Work Experience

Senior Frontend Engineer (Full-Stack Support) at Shelf.io

January 1, 2021 - Present

Led frontend modernization with Next.js and modern React, focusing on high-performance architecture and modular design. Implemented performance engineering that reduced LCP by several seconds through code-splitting and resource optimization. Built and maintained a robust design system with Storybook for cross-team consistency. Transitioned the main app to TypeScript Strict Mode, reducing production runtime errors. Architected a rich text editor (Froala) with custom change-tracking and complex interactive components. Collaborated with backend teams (Node.js, AWS Serverless) on API evolution to improve frontend data flows.

Frontend Developer at Mate Academy

January 1, 2020 - January 1, 2021

Contributed to building responsive and accessible UIs using React, TypeScript, and Redux; integrated APIs and dynamic data layers; contributed to design systems and frontend architecture improvements.