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You will get a high-performance app rewritten with modern technologies

Nazarii K.Status: Offline
Nazarii K.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Nazarii , priced and ready to go.
Nazarii K.Status: Offline
Nazarii K.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Nazarii , priced and ready to go.

Project details

You will get a fast, scalable, and modern web application optimized for real-world performance and long-term maintainability.

With strong experience in React, Next.js, and TypeScript, I focus on clean architecture, performance optimization, and efficient refactoring of existing systems. I don’t just improve code - I enhance the overall structure, speed, and scalability of your product. The work I deliver is production-ready, well-structured, and built with best practices in mind. 🚀🔥
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security

What's included $1,499

These options are included with the project scope.

$1,499
  • Delivery Time 2 days
  • Number of Revisions 5
    • Design Customization
    • Content Upload
    • Responsive Design
    • Source Code
5.0
1 review
100% Complete
(1)
1% Complete
(0)
1% Complete
(0)
1% Complete
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1% Complete
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IS

Ilya S.
5.00
Apr 8, 2026
Senior React Frontend Developer I had the pleasure of working with Nazar on a React web application, and he did a great job.

He quickly understood the existing codebase and started contributing right away. Nazar handled updates and improvements smoothly, delivering clean and reliable code.

He was easy to work with - communication was clear, he asked good questions, and kept things moving without delays. He also took ownership of his work and suggested useful improvements along the way.

If you’re looking for a solid React developer who can jump into an existing project and deliver quality results, I’d definitely recommend Nazar. I’d be happy to work with him again
Nazarii K.Status: Offline

About Nazarii

Nazarii K.Status: Offline
React Developer | Front End Developer | React, Next.js | Full Stack
100% Job Success
5.0  (1 review)
Ternopil, Ukraine - 12:26 am local time
Senior Frontend Developer. React, Next.js, TypeScript, AI. 4+ years, 30+ projects shipped to production.

I build and modernize SaaS products, dashboards, CRMs, and real-time apps, from architecture to launch. Agency and product work across eCommerce, FinTech, HR Tech, PropTech, and more.

What I do:
• Build apps from scratch to production (and keep supporting them)
• Rewrite legacy React codebases to TypeScript + modern architecture
• Optimize performance - Lighthouse from 40–60% to 90–95%
• Code reviews, clean architecture, Storybook UI kits, solid delivery

Stack:
Frontend - React, Next.js, TypeScript, Tailwind, shadcn/ui, Storybook
State - Redux Toolkit, Zustand, TanStack Query
Backend - Node.js, Express, PostgreSQL, MongoDB, REST/GraphQL
Testing - Playwright, Jest, Cypress, Vitest

If you need a frontend partner who owns the product end-to-end, let’s talk.

Steps for completing your project

After purchasing the project, send requirements so Nazarii can start the project.

Delivery time starts when Nazarii receives requirements from you.

Nazarii works on your project following the steps below.

Revisions may occur after the delivery date.

Codebase Audit & Performance Analysis

I will analyze the current architecture, identify performance bottlenecks, technical debt, and create an optimization/rewrite plan.

Modern Architecture Implementation

Refactor or rewrite the application using modern technologies (React, Next.js, TypeScript) with performance best practices.

Review the work, release payment, and leave feedback to Nazarii .