You will get React Developer Consultation | Frontend Developer

Oleh Z.Status: Offline
Oleh Z. Oleh Z.
5.0

Let a pro handle the details

Buy Custom Website Programming services from Oleh, priced and ready to go.
Oleh Z.Status: Offline
Oleh Z. Oleh Z.
5.0

Let a pro handle the details

Buy Custom Website Programming services from Oleh, priced and ready to go.

Project details

I provide professional consultation for building flexible and efficient web applications using react.js and clean react js code. As a frontend react developer and reactjs developer, I guide you on delivering scalable, maintainable, and interactive solutions for SPAs, responsive websites, or custom React SaaS applications.

During the consultation, I focus on:

Writing optimized react.js code following modern patterns and best practices

Creating responsive, user-friendly interfaces without relying on specific UI libraries

Guidance for projects requiring next.js developer expertise or next js developer integration, including server-side rendering and routing

Ensuring your application is fast, reliable, and adaptable for future growth

I help clients launch high-quality, interactive, and scalable React solutions tailored to their project needs.

React Developer | React UI Developer | Frontend Developer React.js
Programming Languages
JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Design

What's included $80

These options are included with the project scope.

$80
  • Delivery Time 1 day
  • Number of Revisions 1
5.0
10 reviews
100% Complete
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)
1% Complete
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CS

Conglei S.
5.00
Feb 12, 2025
Senior FE Development

CS

Conglei S.
4.70
Nov 22, 2024
Web Application Performance Profilling

NS

Noah S.
5.00
Oct 1, 2024
Front End React.js Node.js developer for E-commerce web application Great team, everyone was very punctual, communicated well, is easy to work with, and produces high quality output. Every deadline was met, all feedback was implemented, and they continuously went above and beyond what was asked of them. Will be using them again and highly recommend.

NS

Noah S.
5.00
Sep 4, 2024
Front End React.js developer for a social shopping web app The Malevich team is fantastic and we'll be doing many projects with them in the future. Very attentive to details, went above and beyond, and we're receptive and quick to implement feedback.

AG

Abdulla G.
5.00
Aug 5, 2024
Experienced React Developer to Improve Fintech App Oleh is an amazing developer with tremendous experience in both front-end and back-end development. He has helped us fix complex Fintech-related applications, and we were very happy with his work.
Oleh Z.Status: Offline

About Oleh

Oleh Z.Status: Offline
React Developer || Frontend Developer React.js | React UI developer
100% Job Success
5.0  (10 reviews)
Kolomyya, Ukraine - 5:38 pm local time
React Developer who puts CLIENT needs first || Long-term ready

I fix slow apps and ship complex, data-heavy dashboards with React, TypeScript, SSR, and TanStack Query. I help teams cut load time by 30–60%, reduce unnecessary re-renders by up to 40%, and improve dashboard usability for products with 10k+ users, large datasets, filters, charts, and role-based workflows.

My work includes code-splitting, state isolation, render de-bottlenecking, API optimization, and clean component architecture that helps teams release 25–35% faster with fewer regressions.

US/EU/UK collaboration, UTC+3.

𝗔𝗽𝗽𝗿𝗼𝗮𝗰𝗵: diagnose hotspots → code and ship fixes/features (components, hooks, SSR/routing) → set guardrails (TS rules, ESLint, Storybook) → measure → add tests & CI.

With 10+ years as a React Developer, I’ve built and scaled SaaS and eCommerce platform using React SaaS, Next.js TypeScript, React Material UI, and React GraphQL, supporting 10,000+ concurrent users. My solutions boosted conversion rates, improved user retention, and reduced infrastructure costs by 40% through component reuse, performance optimization, and seamless frontend architecture.

I’m expert in developing CRM & ERP system, with a strong background in custom software solution. I specialize in building tailored CRM and ERP system that meet specific business needs as a React Developer, Web Developer, and JavaScript Developer.

My Key Achievements as a React UI Developer

🔸Developed 50+ React.js and Next.js web apps as a Reactjs Developer
🔸Built 100+ responsive UIs with React Material UI, Tailwind CSS, and Reactjs TypeScript, improving UX scores by 70%
🔸Created 10+ React SaaS platform with Strapi, Next.js, and GraphQL, boosting client acquisition by 60%
🔸Integrated 25+ APIs with React Twilio, React GraphQL, and Redux, automating 80% of workflows for clients.
🔸Designed and launched 20+ PWA and React js Frontend, increasing mobile traffic by 55%.
🔸Delivered 100+ dashboard with React.js and real-time data using WebSocket, managing over 100K live requests as a React Frontend Developer.
🔸Implemented e-commerce systems as a Next.js React and Next.js Developer, improving sales funnel conversion by 45%.
🔸Customized 40+ WordPress Plugin React solutions, streamlining backend-user interaction and reducing support requests by 30%
🔸Led frontend development for 70+ project as a Frontend React Developer, following GitFlow and Scrum, with zero production delays.
🔸Maintained 200+ Reactjs Frontend components, ensuring consistency and reducing UI bugs by 80% across platforms.

🚵 I develop interactive calendars for sports events and activities using React.js, and RESTful APIs as a React Frontend Developer.
🚵 I create real-time scoreboards with live updates using WebSocket, React.js, and Node.js, ensuring responsive design as a Frontend React Developer.
🚵 I build virtual training platforms with features like video access, live sessions & progress tracking using React, React Native, WebRTC & AWS, leveraging my skills as a React AWS and React Frontend Developer.
🚵 I integrate e-commerce functionality for sports merchandise using Strapi, React.js, and Next.js as a Next.js Developer, React Developer, Next.js developer & React SaaS expert.


I’m a React Web Developer with strong expertise in building dynamic & responsive interface using React js. As a front end developer React specialist, I create clean, efficient, and scalable solutions tailored to business needs. My experience as a React front end developer includes working with modern libraries and frameworks, ensuring seamless user experiences. I also work with React GraphQL integrations to build fast, data-driven applications. Whether you need complete React JS website or updates to an existing one, I deliver quality results on time.

I create responsive react js website solutions tailored to client needs. As a front-end developer react and react front end developer, I specialize in modern UI development using React as a React UI Developer. I'm also a react next js developer, delivering optimized apps with Next.js and Tailwind. My stack includes react next tailwind frontend and I build full-stack solutions using react next.js supabase and react.js supabase for smooth backend integration. I ensure clean code, high performance, and timely delivery.

Why should you consider hiring me for frontend development (React Developer or Nextjs Developer)?

💡 I bring a well-established workflow to every website project.
💡 I adhere to standard GIT practices consistently across all website development projects.
💡 I incorporate task management and Scrum elements seamlessly.
💡 My rate not only offers you a cost advantage but also guarantees that the quality of the result you receive will surpass its associated cost.

Looking for a React Frontend expert? Click the INVITE button, and let’s talk about the main task for your business.
React Developer | Frontend React | React.js Developer



Steps for completing your project

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

Delivery time starts when Oleh receives requirements from you.

Oleh works on your project following the steps below.

Revisions may occur after the delivery date.

Online meeting

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