You will get a clear roadmap and technical plan for your React / Next.js project

Oleg B.Status: Offline
Oleg B. Oleg B.

Let a pro handle the details

Buy Web Application Programming services from Oleg, priced and ready to go.
Oleg B.Status: Offline
Oleg B. Oleg B.

Let a pro handle the details

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

Project details

I’m a Frontend React Engineer, Frontend Lead, and Senior Software Engineer with 3+ years of experience delivering high-quality web solutions for companies such as ChessAt3, Jua.AI, and Found.ee. As a Rising Talent on UpWork, I specialize in building scalable, robust, and efficient web applications using modern technologies and frameworks.

Before starting development, it’s essential to establish a strong foundation. That’s why I offer a detailed Discovery Phase that includes requirements gathering, technical feasibility analysis, and project scoping (depending on the selected package). Together, we’ll define clear goals, outline functionality, and build a roadmap to ensure a smooth and efficient development process.

My goal is to set your project up for success from the start with a clear, actionable plan that minimizes risks and maximizes value.
Let’s bring structure and clarity to your vision — message me before purchasing this project to get started.
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$1,000
Standard
$1,500
Advanced
$1,900
Delivery Time 2 days 3 days 4 days
Number of Revisions
123
Number of Pages
123
Design Customization
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Content Upload
Responsive Design
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Source Code
-
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-
Optional add-ons You can add these on the next page.
Additional Revision
+$250
Oleg B.Status: Offline

About Oleg

Oleg B.Status: Offline
React Full-Stack JavaScript Developer | WebFlow, Next.js, Nest.js
Lviv, Ukraine - 5:53 am local time
💎 4+ years of experience with React / React Native | Next.js | TypeScript | Web & Mobile | Node.js | Express.js |

Transforming Ideas into High-Performance Digital Products 🚀
I help startups and product companies build fast, scalable, and user-focused web and mobile applications that drive measurable business results.

👋 About Me

Hi, I’m Oleg Bandrivskiy, a Fullstack React / React Native Developer with 4+ years of hands-on commercial experience building production-ready apps for international companies.

I specialize in React.js, Next.js, TypeScript, and React Native, Node.js, Express.js delivering modern, high-performing, and maintainable applications for web and mobile.
My work blends clean architecture, smooth UI/UX, and real-world scalability — ensuring every line of code contributes to business growth.

🧠 Experience & Highlights

🌍 Jua.ai — React & Next.js Developer
Refreshed and modernized the UI for an AI-driven weather intelligence platform.
Redesigned major product interfaces, optimized frontend architecture, and boosted overall performance and visual consistency using React, Next.js, and TypeScript.

♟ ChessAt3 — React & Next.js Developer
Built a complex admin management system for an educational platform.
Developed real-time dashboards, advanced filters, and data sync features, significantly improving scalability, maintainability, and UX quality.

These projects showcase my ability to deliver pixel-perfect design, advanced state management, and seamless frontend performance in production environments.

⚙️ Technical Expertise

✅ Languages: TypeScript, JavaScript (ES6+), Node.js, Python,
✅ Frontend: React.js, Next.js, React Native, Expo
✅ State Management: Redux, Zustand, React Query, Redux-Saga, Context API
✅ Styling: Tailwind CSS, Styled Components, Material-UI, Ant Design, Radix UI
✅ Backend & Cloud: Firebase, Supabase, REST APIs, CI/CD, Node.js, Express.js, Django
✅ Testing: Jest, React Testing Library, Cypress
✅ Design Tools: Figma, Storybook, Atomic Design

🏆 Why Clients Choose Me

🔹 High-level quality with startup speed — balancing scalability and fast delivery
🔹 Cross-platform expertise — React Native for iOS & Android
🔹 Strong product mindset — I don’t just code features, I build user experiences
🔹 End-to-end ownership — from architecture to deployment
🔹 Transparent communication — proactive updates and reliable collaboration

💼 What I Deliver

📱 High-performance, mobile-friendly React/Next.js apps
🧩 Clean, modular, and reusable codebase
🎨 Pixel-perfect UI from Figma
🚀 Fast iteration, performance optimization, and long-term maintainability
🛠 Modern development practices — CI/CD, Git workflows, agile sprints

💬 Let’s Build Something Great Together

Whether you need a React/Next.js engineer for a SaaS MVP, a React Native expert for mobile, or a dedicated developer to lead your frontend, I can help you ship faster, scale smarter, and deliver value that lasts.

📞 Let’s connect and discuss your next project — I offer a short discovery call to understand your goals and suggest the best approach.

Keywords: React.js Specialist, Flutter Expert, Expert Full Stack Developer, Full Stack Web Developer, Swift Developer, React Native Expert, React.js Developer, Full stack Software Developer, Expert API Developer, Senior Backend Developer, Cross-Platform App Developer, Mobile App Developer, Node.js Expert Developer, Full Stack Development Specialist, Full Stack Software Engineer, React Engineer, React Development Expert, Senior iOS Developer, Kotlin Specialist, Backend Developer, Mobile App Development Specialist, Senior Mobile App Developer, Expert React Developer, Senior Full Stack Engineer, Senior Full-Stack Engineer, Experienced Frontend Developer, React Development Specialist, Full Stack Developer, Experienced React Developer, Software Development Specialist, Experienced React Developer, Senior Node.js Developer, Expert Frontend Developer, Frontend Developer, Next.js Expert, iOS Swift Developer, Senior Web & Mobile App Developer

Steps for completing your project

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

Delivery time starts when Oleg receives requirements from you.

Oleg works on your project following the steps below.

Revisions may occur after the delivery date.

Step 1 — Requirements & Goal Definition

I’ll analyze your business goals, target users, and core functionality. Together, we’ll define clear requirements and success metrics for your product.

Step 2 — Technical Feasibility & Architecture Planning

I’ll evaluate the most suitable tech stack (React, Next.js, TypeScript), outline architecture options, and assess scalability, security, and performance aspects.

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