You will get a production-ready Next.js and Node.js full-stack web application
Project details
Need a highly scalable backend matched with a lightning-fast, production-grade frontend for a custom web application?
Whether you are launching a brand-new digital project from scratch or need an expert to completely refactor an existing application that is slow, buggy, or running on outdated tech, I have you covered. As a Senior Full Stack Engineer with over 6 years of professional experience specializing in the MERN and Next.js ecosystem.
💻 Technical Capabilities Included In Your Project:
• Advanced Frontend Architecture: Interactive, high-performance web interfaces and dashboards built using Next.js (SSR/SSG), TypeScript, and Tailwind UI.
• Robust Backend Infrastructure: Highly secure, clean-coded RESTful or GraphQL APIs natively written in Node.js and Express.
• Optimized Data Design: Custom database schemas, relationship indexing, and lightning-fast query mapping using MongoDB, PostgreSQL, or Supabase.
Let’s deploy a custom web application built right the first time. Hire an architecture-first senior engineer to launch software that performs smoothly under pressure.
Whether you are launching a brand-new digital project from scratch or need an expert to completely refactor an existing application that is slow, buggy, or running on outdated tech, I have you covered. As a Senior Full Stack Engineer with over 6 years of professional experience specializing in the MERN and Next.js ecosystem.
💻 Technical Capabilities Included In Your Project:
• Advanced Frontend Architecture: Interactive, high-performance web interfaces and dashboards built using Next.js (SSR/SSG), TypeScript, and Tailwind UI.
• Robust Backend Infrastructure: Highly secure, clean-coded RESTful or GraphQL APIs natively written in Node.js and Express.
• Optimized Data Design: Custom database schemas, relationship indexing, and lightning-fast query mapping using MongoDB, PostgreSQL, or Supabase.
Let’s deploy a custom web application built right the first time. Hire an architecture-first senior engineer to launch software that performs smoothly under pressure.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$350
|
Standard
$500
|
Advanced
$750
|
|---|---|---|---|
| Delivery Time | 4 days | 7 days | 14 days |
Number of Revisions | 3 | 5 | Unlimited |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Frequently asked questions
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TR
Tyler R.
Aug 3, 2026
Fix Design Issues on React Site Migrated from Vue
Jahanzaib delivered under a tight window with professionalism and excellent communication. Would recommend his services.
AT
Amtul Quddus T.
Jul 31, 2026
Senior Next.js/MERN Developer to Help Scale a Growing SaaS
Excellent developer and a great partner to work with. They quickly understood our SaaS architecture and delivered high-quality solutions that helped improve the platform. Would definitely recommend for complex development projects.
AS
Aneela S.
Jul 31, 2026
MERN Developer — Healthcare Appointment Booking Platform
Great developer with strong technical skills and a professional approach. They helped build our appointment booking platform efficiently and were always responsive when we needed adjustments. The overall experience was smooth, and I would happily hire them for future projects.
RA
Riaz A.
Jul 31, 2026
Full Stack Developer for Multi-Vendor Marketplace (Pre-Launch)
This was a great experience from start to finish. The developer understood the scope quickly, delivered everything on schedule, and handled feedback without any issues. The quality of the implementation was solid, and I wouldn't hesitate to work with them again. Recommended.
About Jahanzaib
Full Stack Developer | React | Next.js | Node.js | Replit | Lovable
100%
Job Success
Rahim Yar Khan, Pakistan - 10:48 am local time
Hello, I'm Jahanzaib Zafar, a results-driven Senior Full Stack Developer with 6+ years of hands-on experience building scalable, high-performance, and production-ready web applications.
As a full-stack developer, I also work as a Replit Developer and Lovable Developer, helping clients transform AI-generated prototypes from Replit, Lovable, Bolt.new, or Cursor into secure, production-ready applications. This includes resolving deployment issues, improving performance, migrating databases, implementing authentication, and integrating payments and third-party APIs.
🚀 𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 𝘁𝗼 𝘁𝗵𝗲 𝗧𝗮𝗯𝗹𝗲
🔹 Full Stack Development — React | Next.js | Node.js | MERN
I build end-to-end applications using React.js, Next.js, JavaScript, TypeScript, Node.js, Express.js, and MongoDB. From responsive interfaces to production-ready backend APIs, I focus on clean code, performance, scalability, and maintainable architecture.
🔹 React Developer for SaaS Applications
I have extensive experience building SaaS platforms, multi-tenant applications, dashboards, admin panels, and complex business systems using React, Next.js, Node.js, and TypeScript.
🔹 API Development & Integrations
I design and integrate secure REST APIs and GraphQL services, including payment gateways, CRM/ERP systems, third-party APIs, webhooks, authentication systems, and custom backend architectures.
🔹 React & Next.js Performance Optimization
I optimize applications using code splitting, lazy loading, SSR, SSG, caching, bundle optimization, database optimization, and modern JavaScript performance techniques to deliver fast and responsive experiences.
🔹 AI-Assisted Development & AI Integration
I use Cursor, Claude Code, Replit, and Lovable to accelerate development while maintaining engineering quality. AI-generated code is reviewed, refactored, tested, and secured before becoming part of a production application. I also integrate AI APIs and AI-powered features into SaaS and business applications where they provide real product value.
🔹 Scalable React & Node.js Architecture
I design architectures that can grow with the product — from well-structured monolithic applications to service-oriented systems — with a focus on maintainability, security, performance, and future expansion.
🔹 Communication & Collaboration
Clear communication, transparency, ownership, and consistent progress are part of how I work. I keep clients informed, raise technical concerns early, and take responsibility for the features I deliver.
🔥 𝗥𝗢𝗟𝗘𝗦 𝗜 𝗧𝗔𝗞𝗘 𝗢𝗡
✔ Full Stack Developer / Full Stack Engineer / Full Stack React Developer — SaaS platforms and business applications
✔ Frontend Developer / Front-End Developer — 30+ UI builds
✔ React Developer / React.js / ReactJS Developer
✔ Node.js / NodeJS Developer / Backend Developer — 20+ APIs and 1.2M+ requests/month
✔ Next.js Developer / NextJS Developer — 8+ SSR/SSG SaaS platforms
✔ AI-Assisted Developer / Replit Developer / Lovable Developer
🏭 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦 𝗜’𝗩𝗘 𝗪𝗢𝗥𝗞𝗘𝗗 𝗪𝗜𝗧𝗛
✔️ SaaS & B2B Platforms
✔️ eCommerce
✔️ Healthcare
✔️ Education
✔️ Startups & Enterprises
🌟 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘
✅ Clean, scalable, maintainable code
✅ Production-focused development
✅ Reliable and on-time delivery
✅ Strong product understanding
✅ Architecture-first approach
✅ Clear communication and ownership
✅ Long-term collaboration mindset
Whether you're building a product from scratch, turning an AI-generated prototype into production software, scaling an existing platform, integrating complex APIs, or improving application performance, I bring both technical expertise and product understanding to the project.
📩 Got a broken deployment, slow database, or an ambitious SaaS idea? Let's build it right. Send me a message to get started!
Available to start immediately.
Steps for completing your project
After purchasing the project, send requirements so Jahanzaib can start the project.
Delivery time starts when Jahanzaib receives requirements from you.
Jahanzaib works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & System Architecture Mapping
We will map out application workflows, database logic, and API designs to lock down the exact structural setup.
Backend Engine & Database Schema Construction
Building out secure Node.js backend infrastructure, database links, and strict server-side validation models.