You will get A Legacy React/Node.js Code Upgrade to Modern Stack
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Project details
Breathe new life into your legacy application with professional code modernization. I specialize in upgrading React and Node.js applications to modern standards, eliminating technical debt while maintaining functionality. With experience across multiple production applications, I'll systematically transform your codebase to TypeScript, update dependencies, improve performance, and implement current best practices. Your upgraded application will be more maintainable, performant, and ready for future growth.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$350
|
Standard
$1,400
|
Advanced
$2,800
|
|---|---|---|---|
| Delivery Time | 4 days | 14 days | 28 days |
Number of Revisions | 2 | 3 | 9 |
Bug Investigation | |||
Fix Documentation | - | - | - |
Detailed Code Comments | - | - | - |
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About Ajayi
Upwork Certified | Full-Stack Developer | TypeScript | React | Node.js
100%
Job Success
Ifo, Nigeria - 12:52 pm local time
I work across the entire stack—from pixel-perfect, responsive UIs to robust backend APIs and databases—helping startups and businesses turn ideas into reliable products.
🔹 What I Do Best (End-to-End Development)
Frontend & UI
Modern web applications using React.js, Next.js, TypeScript, and Tailwind CSS.
Responsive, accessible interfaces with clean component architecture.
SEO-optimized pages leveraging Next.js (SSR / SSG).
Translating Figma designs into production-ready UI.
Mobile Development
Cross-platform mobile apps using React Native and Expo.
Delivering smooth-performing Android & iOS apps with shared business logic.
Backend & APIs
Scalable backend systems with Node.js and Express.js.
REST API development, authentication, and secure business logic.
Database design using PostgreSQL / MySQL with Prisma ORM.
API integration and data-driven applications.
🔹 Real-World Experience & Results
Here’s how I’ve applied these skills in production:
💳 Payment Systems & Platforms: Led development on CipTopup’s mobile app and web platform, delivering secure payment flows, dashboards, and admin tools.
🛒 E-commerce Applications: Built a full e-commerce front-end with Stripe payment integration, product pages, and delivery workflows.
💼 Content-Managed & Admin Platforms: Developed full-stack systems with admin dashboards, role-based access, and dynamic content management.
🧑⚕️ Healthcare & Travel Platforms: Delivered responsive, user-friendly interfaces for specialized healthcare (AI-driven insights) and travel products, improving usability and performance.
🔹 How I Work (Quality & Delivery)
Clean, maintainable, production-ready code.
Strong focus on performance optimization and scalability.
Clear communication and fast understanding of project requirements.
Comfortable owning features from idea to deployment.
Available for short-term tasks or long-term collaboration.
🔹 Certified Skills
🎖️ Upwork Skill Certified – Front-End Development 🎖️ Upwork Skill Certified – CSS Front-End Development (Manually reviewed technical assessments validating modern frontend best practices.)
If you’re looking for a Full-Stack Developer who can handle React, Next.js, Node.js, Supabase/PostgreSQL, and deliver reliable web or mobile applications, let's build something solid. 🚀
Steps for completing your project
After purchasing the project, send requirements so Ajayi can start the project.
Delivery time starts when Ajayi receives requirements from you.
Ajayi works on your project following the steps below.
Revisions may occur after the delivery date.
Provide requirements and development starts