I will add javascript functionality and API integration to your website

S
serhii_msky
S
serhii_msky
Serhii M.
add javascript functionality and API integration to your website
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add javascript functionality and API integration to your website

About this gig

Need to add new functionality or integrate an API into your website?


You're in the right place. I'm a Frontend Developer with nearly 5 years of commercial experience, specializing in JavaScript, TypeScript, React, and API integrations.


I can help you with:

  • JavaScript functionality and features
  • REST API integration
  • API requests and data handling
  • Forms, validation, search, and filtering
  • Dynamic content and interactive UI
  • Third-party API integration
  • React and TypeScript functionality
  • Existing frontend improvements


Technologies I work with:

  • JavaScript / TypeScript
  • React / Next.js
  • HTML5 / CSS3 / SCSS
  • REST APIs
  • Node.js / Express.js
  • Supabase
  • Tailwind CSS
  • Git


I focus on creating clean, reliable, and maintainable functionality that works smoothly with your existing website or application.


Why work with me?

  • Nearly 5 years of commercial experience
  • Clean and maintainable code
  • Experience with existing codebases
  • Reliable API integration
  • Clear communication


Please send me your requirements before ordering so I can confirm the scope.

  • Expertise

    • Debugging
    • Performance
    • Databases
    • Source control
    • Testing procedures

  • Programming language

    • JavaScript

  • Frontend framework

    • Nuxt.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • Next.js
    • Node.js
    • Supabase

Get to know Serhii M.

Serhii M.

Frontend Developer specializing in React and JavaScript

  • FromUkraine
  • Member sinceOct 2026

  • Languages

    English, Ukrainian, Russian
Hi! I’m a Frontend Developer with nearly 5 years of commercial experience. I work mainly with HTML, CSS, JavaScript, React and TypeScript. I build responsive websites, turn Figma designs into working interfaces, create reusable components, integrate APIs, and fix frontend issues. I’m comfortable working with existing projects and handling smaller tasks, from fixing layouts and improving responsiveness to adding features. I focus on clean, practical solutions that work well across different screen sizes and browsers.

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