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You will get React Developer | React js Developer | React js | Senior React Developer

Olexandr F.Status: Offline
Olexandr F. Olexandr F.
Rising Talent
Preview image

Let a pro handle the details

Buy Custom Website Programming services from Olexandr, priced and ready to go.
Olexandr F.Status: Offline
Olexandr F. Olexandr F.
Rising Talent
Preview image

Let a pro handle the details

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

Project details

Looking for a Senior React Developer to build or improve your web application?
I develop modern and scalable applications using React.js TypeScript JavaScript and component-based architecture. I focus on performance clean code reusable components and building reliable frontend systems for SaaS CRM and enterprise products.
📩 Send me a message and let's discuss your project requirements and how I can help you deliver a high-quality React solution.

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Programming Languages
JavaScript, Java, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Design

What's included $20,000

These options are included with the project scope.

$20,000
  • Delivery Time 3 days
  • Number of Revisions 3
Olexandr F.Status: Offline

About Olexandr

Olexandr F.Status: Offline
React Native Developer | React Developer | Mobile App Development
Vyshneve, Ukraine - 8:53 am local time
👋 I'm a React Native Developer and React Developer with 6+ years of experience building mobile and web applications for startups, Healthcare companies, Fintech products, and growing businesses.

🎯 As a React Native Developer, I specialize in Mobile App Development for iOS and Android using React Native TypeScript JavaScript React Native Expo and React Native Firebase.
🎯 As a React Developer and Frontend Developer I build scalable web applications with React.js modern frontend architectures, and intuitive user experiences that help businesses launch faster and grow with confidence.

Over the last 6+ years, I've contributed to 60+ projects and helped build, launch, maintain, and scale 50+ mobile applications. As a React Native Developer, my experience covers the entire product lifecycle, from MVP development and new product launches to long-term maintenance, feature expansion, third-party integrations, performance optimization, and App Store and Google Play releases.

Whether you need a React Native Developer to build a new mobile application, a React Developer to improve an existing platform, or a Mobile App Developer who can take ownership from architecture to release, I focus on delivering reliable, scalable, and production-ready solutions built for long-term success.

🚀 WHAT I CAN HELP YOU WITH

As a React Native Developer and Mobile App Developer, I help startups and businesses build, launch, and scale mobile applications that are designed for real users and long-term growth.

✔️ 100% cross-platform React Native Mobile App Development for both iOS & Android from a single codebase
✔️ MVP Development and rapid product validation ( 100+ MVP products built )
✔️40+ React Native Expo applications with scalable and production-ready architecture
✔️ React Native Firebase integration, authentication, analytics, and push notifications
✔️ Payment system integration with Stripe and subscription-based products
✔️ Healthcare and Fintech mobile applications with a strong focus on security, performance, and user experience
✔️ Mobile app modernization, feature development, and long-term product support
✔️ Performance optimization, bug fixing, and React Native application stabilization
✔️AI Powered - 55+ products, Custom AI Solutions AI Agent Platform AI Chatbot RAG Chatbot OpenAI Claude API as a React Developer and Full Stack Developer React Native AI Mobile App Development

As a React Developer and Frontend Developer, I also help companies build modern web applications that integrate seamlessly with their mobile products.

✔️ React.js Application Development
✔️ TypeScript and JavaScript Frontend Development
✔️ Dashboard and Admin Panel Development
✔️ API Integration and Third-Party Services
✔️ Responsive User Interfaces and Design Implementation
✔️ Existing Application Maintenance and Scaling


🏆 WHY CLIENTS WORK WITH ME

✔️ 6+ years of experience as a React Native Developer and Full Stack Developer
✔️ 80+ successful projects delivered for startups, SaaS companies, and enterprise businesses
✔️ 150+ mobile applications developed, launched, and maintained for iOS & Android
✔️ 55+ AI-powered products built with OpenAI, Claude API, AI Chatbots, AI Agents, and RAG architecture
✔️ 100+ features delivered across Healthcare, FinTech, E-commerce, Logistics, and SaaS platforms
✔️ 60+ Firebase, Stripe, Maps, Authentication, Analytics, and Payment integrations completed
✔️ 1000+ bugs fixed and performance optimizations implemented for production React Native apps
✔️ End-to-end development, from MVP planning and architecture to App Store & Google Play publication
✔️ Long-term partnerships focused on scalable code, business growth, and reliable communication

As a React Native Developer, I understand that successful Mobile App Development is not only about writing code. It's about building reliable products that users enjoy using and businesses can confidently scale.

As a React Developer and Frontend Developer, I focus on clean architecture, maintainable code, and user experiences that support product growth while reducing future development costs.

📍 Core Expertise

React Native • React Native Expo • React Native Firebase • React Native CLI • React.js • TypeScript • JavaScript • Mobile App Development • iOS Development • Android Development
React Navigation • React Native Reanimated • React Native SVG • React Native WebView • AI Mobile App Development

Apple Sign-In Google Authentication Facebook Authentication REST API Integrations App Store Deployment Google Play Releases Git GitHub Bitbucket Postman Webpack ESLint Prettier Figma Xcode Gradle


From startup MVPs to large-scale Healthcare and Fintech platforms, I've helped teams build, launch, maintain, and scale products used by thousands of users. My focus is always the same reliable architecture, clean code, strong performance, and solutions designed for long-term growth.

Steps for completing your project

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

Delivery time starts when Olexandr receives requirements from you.

Olexandr works on your project following the steps below.

Revisions may occur after the delivery date.

Understanding the concept and step-by-step planning for implementation

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