Roman Kolisnyk / Frontend Developer / UI Lead

8+ years in FE / 5+ years at airSlate (100M+ users) building core products in a 30+ person cross-functional team — refactored legacy UI into React + TypeScript across 3 major products, built a UI Kit cutting the codebase by 50%+, achieved ADA/WCAG 2.1 compliance, and led a 5-person team as a recognized top performer. Grew from UI dev to UI Tech Manager, now leading teams of 6 to 15.

AI/spec-driven development
React
TypeScript
UI architecture & UI Kit ownership
accessibility & semantic UI/UX
leading UI teams up to 15
reliable, responsible, attentive, diligent
EN B2

🧑‍💻 Experience
insulaLabs / UI FE Developer -> UI Dev Lead -> UI Tech Manager
May 2025now
- Owning complex UI implementation across products — code review, best-practices setup, and hands-on solutions for hard technical problems
- Managing UI teams of up to 6 developers (scaling with 10+ contributors during high-priority delivery) — planning, delegating, aligning with managers, designers, QAs, content managers & other teams, onboarding & mentoring
- Release management, deployment, sprint planning
- Taking part in spec-driven AI development setup & testing initiative
HTML, CSS, SASS, TypeScript, Angular, Git, Figma, Claude Code, etc.
airSlate / UI -> Frontend Developer & UI Tech Leader
Oct 2019Feb 2025 (took a break)
Unicorn SaaS company providing workflow automation, PDF editing, e-signatures, document management and no-code solutions to 100+ million users worldwide
- Developed UI & functionality for products: pdfFiller (editor), pdfFillerSDK, airSlate (editor), signNow (editor), trueEdit (editor & landing page)
- Refactored legacy Pug UI into React + TypeScript across 3 major products (signNow, pdfFiller, airSlate editors) + pdfFillerSDK — incl. a monorepo split — while preserving support for legacy browsers (Chrome 49, IE11)
- Built a UI Kit and Storybook from scratch, cutting UI codebase by >50% and improving performance, scalability & maintainability
- Delivered clean, accessible UI covered by unit & E2E tests
- Achieved ADA/WCAG 2.1 compliance on pdfFiller — semantic HTML, ARIA landmarks, keyboard navigation — saving $1M+ in potential legal exposure
- Led a 5-person UI/Frontend team across signNow & pdfFiller, rotating onto other products as needed (recognized internally as a top performer)
- Led technical initiatives, conducted code reviews & interviews, shared knowledge through mentorship/presentations/documentation
HTML, Pug, CSS, SASS, JS, TS, React, Redux, Thunk, Saga, Storybook, Jest, Playwright, Webpack, Vite, Gulp, Git, GHA, JIRA, SonarQube, Grafana, Kibana, Allure, Figma, etc.
hexa / UI + Frontend Developer
Sep 2018Oct 2019
Service company providing copywriting, programming, marketing, CRM development, content management, and web design solutions for global corporate clients
- Built interactive, animated web pages & reusable UI components (order forms/dashboards) with PHP integration
- Significantly enhanced performance, accessibility & semantics of the projects and maintained & optimized a lot of legacy code
- Delivered responsive emails & interactive promo campaigns
HTML, SASS, JS, jQuery, Vue.js, PHP, WordPress, Bootstrap, GSAP, Gulp, Git, Avocode, Figma
freelance / UI + Frontend Developer & Designer
Jan 2018Sep 2018
- Designed & built e-commerce sites, landing pages & custom CMS solutions — redesigning, optimizing, and configuring SEO & hosting for clients
HTML, SASS, JS, jQuery, PHP, Yii2, WordPress, OpenCart, Bootstrap, Gulp, Git, Sketch, Zeplin

🐣 Pet-Projects
Pikamark / Chrome extension
Real bookmarks manager for new tab page. Highly customizable and functional, multilingual
React, TS, HTML, CSS (Sass), WXT, i18n, Radix, Zustand, Astro, Cursor, Claude Code (spec-driven development)
🤹 Skills
- languages: UA, EN (upper-intermediate / B2)
- frontend:
  - HTML, CSS, JavaScript, TypeScript
  - React, Next.js, Redux, RTK, Router, Query
  - Jest, Testing Library, Playwright
  - WXT, Webpack, Vite, Gulp
  - Tailwind, shadcn/ui, Framer Motion
  - Strapi, Sanity, WordPress
- tools & services:
  - Claude Code, Cursor, Antigravity
  - Git, GitHub Actions (GHA), TeamCity; GitHub, GitLab
  - JIRA, Confluence
  - ESLint, Prettier, Husky, SonarQube, Allure
  - Storybook, Chromatic
  - yarn, npm, CLI
  - Figma, Sketch, Zeplin
- dev practices:
  - CI/CD, BEM, accessibility (A11Y), cross-browser & adaptive/responsive layout, semantic HTML, web animations, performance optimization, mobile-first approach
  - SOLID, KISS, DRY, YAGNI principles
🎓 Education
NTUU "Kyiv Polytechnic Institute"
Automation of electromechanical systems and electric drive
😻 Interests
I bring the same passion, precision, patience and ownership outside work to learn new things and turn them into something beautiful
- 🤘 Producing metal music solo, guitar playing, extreme vocals, mixing & mastering (Ramapitek)
- 🏎️ Formula 1, simracing
- 👨‍🎨 Design, minimalism, technologies, AI
- 🐸 ...otherCommonHobbies

Roman Kolisnyk / Frontend Developer / UI Lead

🧑‍💻 Experience

insulaLabs / UI FE Developer -> UI Dev Lead -> UI Tech Manager

airSlate / UI -> Frontend Developer & UI Tech Leader

hexa / UI + Frontend Developer

freelance / UI + Frontend Developer & Designer

🐣 Pet-Projects

Pikamark / Chrome extension

🤹 Skills

🎓 Education

😻 Interests