You will get a scalable backend API built with Node.js, NestJS & PostgreSQL
Top Rated
Project details
You’ll get a robust, high performance backend built with Node.js, NestJS, or Express designed for scalability, security, and reliability. I’ll architect APIs, microservices, and databases (PostgreSQL, MongoDB, Redis) that handle high traffic, real time operations, and complex business logic with ease. With 10+ years of experience powering SaaS, Fintech, Healthcare, and AI platforms, I deliver clean, maintainable code, fast response times, and secure integrations (REST, GraphQL, WebSockets, Stripe, AWS). My solutions are optimized for growth, reliability, and seamless user experiences, ensuring your product scales confidently from MVP to millions of users.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$1,000
|
Advanced
$2,000
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 20 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 5 | 15 | 30 |
Design Customization | - | - | - |
Content Upload | |||
Responsive Design | |||
Source Code |
Frequently asked questions
31 reviews
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AB
Anthony B.
Mar 20, 2026
Update Write Checks function
Awesome developer!! He did a great job on all of our projects and he’s very knowledgeable. I recommend him to anyone looking for a strong developer
ZH
Zoltan H.
Jan 15, 2026
Senior Frontend Engineer (Next.js / Tailwind) — Paid Execution Test First
AP
Alvin P.
Oct 27, 2025
Expert Full stack Developer for CRM Development.
Excellent Job, backend coding, complex database and helped me with a 2nd project.
AS
Alexander S.
Aug 21, 2025
Contract Appraisal
Tayyab has been with us from the very start of building our company, and his impact has been outstanding. He’s an exceptional developer with a strong eye for clean, scalable code and a real talent for solving problems quickly. Beyond his technical skills, he’s reliable, proactive, and a true team player. We couldn’t have asked for a better partner in bringing our product to life, and I’d highly recommend him to anyone looking for top-tier frontend expertise.
AB
Anthony B.
Aug 21, 2025
Redesign UI for exisiting web application
Great job as always
About Tayyab
Senior Full Stack Developer | Claude AI | Supabase | HealthTech & SaaS
93%
Job Success
Lahore, Pakistan - 12:34 pm local time
I also specialize in AI-driven development and modern “Vibe Coding” workflows. By leveraging tools like Claude AI, Claude Code, GPT, OpenClaw, Lovable, and Dispatch, I accelerate product delivery, automate workflows, and build intelligent, scalable SaaS platforms.
Additionally, I have extensive healthcare integration experience, developing middleware that connects EHRs, lab systems, and clinical tools using HL7 v2 and FHIR R4. This ensures secure, real-time interoperability across systems.
Core Capabilities
• Scale MVPs into high-growth SaaS platforms
• Architect scalable end-to-end MERN applications
• Optimize performance (Core Web Vitals, Lighthouse 90+)
• Develop secure, high-performance backends with NestJS
• Design cloud-ready systems with Supabase and modern infrastructure
• Integrate AI workflows and automation systems
• Modernize legacy systems into scalable architectures
• Implement healthcare integrations (HL7 v2, FHIR R4, Mirth Connect)
• Enable real-time data sync across EHRs, labs, and APIs
Technical Expertise
• AI & Automation: Claude AI, Claude Code, GPT, OpenClaw, Lovable, Dispatch, AI Agents
• Backend: Node.js, NestJS, Express, MongoDB, PostgreSQL, GraphQL, Supabase
• Frontend: React.js, Next.js, Angular, TypeScript, Tailwind CSS
• DevOps: Docker, CI/CD, AWS, GCP, Vercel
• Healthcare: HL7 v2, FHIR R4, Mirth Connect (OIE)
• Performance: Core Web Vitals, caching, API optimization
Industries
• Fintech & Payments
• Healthcare & HealthTech
• Logistics & Supply Chain
• AI Platforms & Analytics
• E-Commerce & SaaS
• Enterprise Automation
Proven Impact
• Achieved Lighthouse scores of 90+ across production apps
• Reduced API response times up to 60%
• Scaled SaaS platforms to thousands of active users
• Delivered healthcare integrations with real-time data exchange
• Transformed legacy systems into maintainable, scalable platforms
If you’re looking for a Senior Full-Stack Developer who can take charge of architecture, deliver quickly, and build scalable solutions, especially with AI and healthcare integrations, send me a message, and let’s get started.
Steps for completing your project
After purchasing the project, send requirements so Tayyab can start the project.
Delivery time starts when Tayyab receives requirements from you.
Tayyab works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering & Architecture Planning
I’ll review your requirements, define the backend architecture, database schema, and finalize all API specifications before development begins.
API Development & Integration
I’ll build secure, scalable REST or GraphQL APIs using Node.js / NestJS with TypeScript, connect your database, and integrate required third-party services.