Denys

Frontend Developer (React/Next/TypeScript)

Employment type:
full-time, part-time
Age:
41 years
City of residence:
Kharkiv
Ready to work:
Remote

Contact information

The job seeker has provided: Phone numberEmailLinkedInMessenger

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Work experience

Frontend Engineer

from 07.2025 to 09.2026 (1 year 3 months)
InsulaLabs, Дистанційно (IT)

• Develop enterprise-grade UI components for complex Angular/TypeScript platforms, ensuring strict adherence to provided Figma designs and high accessibility standards.
• Extend and maintain user interfaces within strict architectural platform constraints, ensuring consistent behavior across distributed applications without breaking core functionalities.
• Implement shared layouts, side panels, and SVG-based animations, collaborating closely with the core platform team for seamless updates.
• Ensure code quality by actively participating in PR reviews, resolving merge conflicts, and passing strict CI/CD pipeline checks (ESLint, Stylelint).
• Collaborate cross-functionally with Product, QA, and Backend teams to deliver stable releases while minimizing technical debt.

Frontend Developer

from 08.2020 to 05.2025 (4 years 10 months)
Webspark, Харків (IT)

• Developed and maintained UI architectures across e-commerce platforms and CMS-driven web applications, progressively migrating legacy interfaces to React and TypeScript.
• Built and maintained reusable UI components for an internal library (Storybook, Tailwind CSS), improving design consistency and accelerating feature delivery by ~30%.
• Collaborated tightly with backend engineers by creating robust frontend structures and data stubs (mocking data), ensuring a seamless integration layer for Laravel/PHP APIs.
• Drove Web Performance Optimization (WPO) initiatives, improving Lighthouse performance scores to 90+ and Core Web Vitals via strategic code splitting and asset optimization.
• Implemented complex interactive interfaces using GSAP, Lottie, and advanced JavaScript techniques to enhance user engagement on landing pages and checkout flows.

Frontend Developer

from 01.2018 to 07.2020 (2 years 7 months)
Stanfy, Дистанційно (IT)

• Engineered responsive, cross-browser web applications and interactive landing pages using React, JavaScript, SCSS, and Webpack.
• Integrated frontend UI with REST APIs and third-party services, handling JSON data processing for PHP/Twig environments.
• Championed the transition to component-based development, significantly improving codebase maintainability and scalability for client projects.

Markup & Frontend Developer

from 04.2015 to 12.2017 (2 years 9 months)
Freelance, Дистанційно (IT)

Delivered end-to-end frontend solutions for diverse clients, building responsive websites and CMS themes (WordPress) utilizing HTML5, CSS3, JavaScript, jQuery, and BEM methodology.

Hardware/Systems Engineer

from 07.2010 to 08.2017 (7 years 2 months)
Triol Corporation, Харків (Машинобудування)

Commissioned, programmed, and troubleshot automated electromechanical systems and microcontroller-based logic. Progressed to Department Manager, overseeing technical operations and hardware/software integration.

Hardware-інженер

from 04.2008 to 07.2010 (2 years 4 months)
SHGPP, Андріївка (Харківська обл.) (Гірнича промисловість)

Commissioned, programmed, and troubleshot automated electromechanical systems and microcontroller-based logic. Progressed to Department Manager, overseeing technical operations and hardware/software integration.

Education

НТУ ХПИ

Электромеханические системы и привод, Харьков
Higher, from 2002 to 2008 (6 years)

Additional education and certificates

2016, 5 месяцев

2019, 4 месяца

Knowledge and skills

  • HTML
  • CSS
  • JavaScript
  • Git
  • React
  • Figma
  • TypeScript
  • Redux
  • Next.js
  • REST API
  • JQuery
  • Webpack
  • MySQL
  • JS
  • Angular
  • Laravel
  • FSD
  • Modular Architecture
  • Micro-frontends
  • Module Federation
  • Monorepos
  • Turborepo
  • TanStack Query
  • React Query
  • Zustand
  • Redux Toolkit
  • React Hook Form
  • Zod
  • OpenAPI
  • GraphQL
  • WebSockets
  • Tailwind CSS
  • SCSS/SASS
  • CSS Modules
  • CSS-in-JS
  • Headless UI
  • Shadcn/ui
  • Radix UI
  • Storybook
  • Web Accessibility
  • Vitest
  • Jest
  • ESLint
  • Vite
  • Turbopack
  • Pnpm
  • CI/CD
  • Core Web Vitals Optimization
  • SSR / SSG / ISR
  • PostgreSQL

Language proficiencies

  • English — above average
  • Ukrainian — fluent

Additional information

[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)
• LinkedIn: [open contact info](look above in the "contact info" section)
• GitHub: github.com/ashuksu

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