Sergey V.

  • Frontend Developer
  • Full-Stack Developer
  • Creative Developer

Building high-performance web products with strong UX, clean architecture, and meaningful visual detail.

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About

Frontend Engineer with 5+ years of experience building high-performance web applications and interactive user interfaces.

Specialised in React, TypeScript, and modern browser APIs, with strong collaboration with product designers to deliver polished UX.

Previously Frontend Lead at EPAM and Co-founder of a creative web studio delivering award-winning web experiences.

Core Skills

Languages & Frameworks

  • JavaScript (ES6+)
  • TypeScript
  • React
  • styled-components
  • Redux
  • Node.js
  • HTML5
  • CSS/SASS/SCSS
  • Tailwind

Architecture & Practices

  • Atomic design
  • Component-driven development
  • State management (Redux, Context, TanStack Query)
  • SPA
  • SSR
  • Responsive design
  • Accessibility (WCAG, ARIA)
  • Internationalization (i18n)
  • REST APIs
  • WebSockets
  • Code splitting

Testing & CI/CD

  • Jest
  • Playwright
  • Cypress
  • Git
  • Jenkins
  • npm
  • Webpack
  • Vite
  • Docker

Other Tools & Experience

  • AWS (Lambda, S3, DynamoDB, CloudFront)
  • Webflow
  • GSAP
  • Motion
  • Lit
  • Three.js
  • D3.js
  • Vue
  • Angular
  • Python
  • Java
  • MySQL
  • PostgreSQL
  • MongoDB

Soft Skills

  • Team leadership
  • Mentoring
  • Design collaboration
  • Code reviews
  • Client communication
  • Decision making

Work Experience

Co-founder & Tech Lead

3200 Kelvin Studio

2024 – Present | Remote

  • Co-founded a creative web studio delivering high-performance marketing and product websites for international clients
  • Built complex front-end interactions using JavaScript, modern CSS, GSAP, and browser APIs
  • Collaborated closely with designers from concept and prototyping through production implementation
  • Led engineering decisions and development workflows for a distributed team of 4–6 developers and designers
  • Optimised performance and accessibility, achieving Lighthouse scores 85+ across performance, SEO, and accessibility
  • Mentored junior developers in JavaScript, Webflow architecture, and modern CSS

Software Engineer, Front-End Lead

EPAM Systems

2021 – 2024 | St. Petersburg & Tbilisi, remote

  • Led front-end development in React and its ecosystem for two distributed teams, aligning code standards and UX consistency
  • Delivered production features for enterprise web platforms used by large distributed teams
  • Mentored junior developers, conducted code reviews, and championed accessibility standards with a11y
  • Proposed and implemented UX improvements adopted by the client, improving usability and satisfaction
  • Reduced CI execution time by ~70% by migrating e2e tests from Robot Framework to Playwright
  • Introduced atomic design practices and modular state management with TanStack Query for maintainability
  • Implemented new features across React frontend, Java backend, and AWS-based services

Projects

Awards and Recognition

Contact

Contact me to discuss your project.