You will get a scalable Node.js, Express or NestJS backend and REST API
Project details
Need a secure, fast, and scalable backend or REST API for your web or mobile application?
I will build a high-performance backend system using Node.js, Express.js, or NestJS with TypeScript. With 6+ years of commercial development experience, I design robust database architectures, implement secure authentication and build seamless integrations for startups and businesses.
What I deliver:
• Scalable Node.js / Express / NestJS REST APIs
• Clean TypeScript architecture & error handling
• Database design (PostgreSQL, MongoDB, MySQL, Supabase)
• Auth systems (JWT, OAuth, Role-based access)
• Payments (Stripe, PayPal), webhooks & 3rd-party APIs
• Swagger/Postman API docs & production deployment
Whether you need an API built from scratch, database integration or performance optimization, I will deliver a clean and well-documented backend on time.
I will build a high-performance backend system using Node.js, Express.js, or NestJS with TypeScript. With 6+ years of commercial development experience, I design robust database architectures, implement secure authentication and build seamless integrations for startups and businesses.
What I deliver:
• Scalable Node.js / Express / NestJS REST APIs
• Clean TypeScript architecture & error handling
• Database design (PostgreSQL, MongoDB, MySQL, Supabase)
• Auth systems (JWT, OAuth, Role-based access)
• Payments (Stripe, PayPal), webhooks & 3rd-party APIs
• Swagger/Postman API docs & production deployment
Whether you need an API built from scratch, database integration or performance optimization, I will deliver a clean and well-documented backend on time.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$400
|
Standard
$900
|
Advanced
$1,800
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 20 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 1 | 1 | 1 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Additional API Module
(+ 1 Day)
+$100
Stripe / PayPal Integration
(+ 2 Days)
+$300
Role-Based Access Control (RBAC)
(+ 1 Day)
+$150Frequently asked questions
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AV
Alena V.
Jun 22, 2026
Quick Fix: Resolve AI Integration Bug & UI Glitches in React/Node.js Web App
The issue was resolved faster than expected, and the fixes were implemented without creating new problems elsewhere in the app. Everything now behaves much more consistently, especially around AI responses and UI rendering. Great work!
VV
Volha V.
Jun 2, 2026
Senior Full Stack Developer Needed for Modern SaaS Platform (React / Next.js / Node.js / TypeScript)
Outstanding developer who consistently delivered high-quality work and thoughtful solutions. Great communication, strong technical skills, and a deep understanding of scalable SaaS architecture. Highly recommended
About Artur
Senior Full-Stack Developer - React | Next.js | React Native | Node.js
100%
Job Success
Ivano-Frankivsk, Ukraine - 8:17 pm local time
🎯 What I Do
I design and develop robust frontend architectures that ensure performance, accessibility and long-term scalability. My focus is not just UI implementation, but delivering reliable systems aligned with business goals.
🖥 Frontend Development
• React & Next.js applications (SPA & SSR)
• TypeScript for scalable and type-safe architecture
• Context API, Redux Toolkit, Zustand for advanced state management
• React Query for server-state synchronization
• Clean component architecture and reusable UI systems
🎨 UI & Styling
• Tailwind CSS, Material UI, Chakra UI, Bootstrap, Sass
• Shadcn-based component systems
• Responsive and pixel-perfect layouts
• Animations with Framer Motion
• Accessibility and cross-browser compatibility
🔗 API & Integrations
• REST API & GraphQL integration
• Firebase & Supabase connectivity
• Authentication flows and protected routes
• AI integrations with OpenAI, Google Gemini, Anthropic Claude, xAI Grok 🤖
⚡ Performance & Optimization
• Vite & Webpack configuration
• Code Splitting & Lazy Loading
• Lighthouse optimization
• SEO best practices in Next.js
• Rendering optimization and bundle size reduction
🧪 Quality & Deployment
• Jest, React Testing Library, Cypress, Playwright
• Storybook for UI documentation
• Git (GitHub, GitLab, Bitbucket)
• CI/CD with GitHub Actions & GitLab CI
• Deployment via Vercel & Firebase 🚀
🏆 Professional Highlights
• Delivered multiple production-ready frontend systems from scratch
• Built scalable UI architectures with complex data flows
• Implemented AI-driven user experiences and smart automation
• Improved performance, accessibility, and SEO across projects
• Established reliable testing and deployment pipelines
💡 How I Work
I prioritize clean code, structured architecture and clear communication. I adapt quickly to evolving requirements and maintain strong attention to performance and user experience.
My goal is to build frontend solutions that are fast, stable, visually polished and ready to scale with your business.
If you’re looking for a developer who can take ownership of your frontend and deliver high-quality, future-ready applications - I’m ready to collaborate 🤝
Steps for completing your project
After purchasing the project, send requirements so Artur can start the project.
Delivery time starts when Artur receives requirements from you.
Artur works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements & Architecture Planning
I review your requirements, design the database schema, and plan the API structure and technology stack (Express/NestJS).
API & Business Logic Development
I build the backend endpoints, data models, authentication (JWT/OAuth), and integrate required third-party services.