You will get a scalable Node.js backend & SaaS API system built
Project details
I build scalable Node.js backend systems and SaaS APIs for startups and businesses that need reliable, secure, and high-performance server-side architecture.
This is not just API creation — I design complete backend systems that power SaaS products, mobile apps, and web platforms with proper structure, scalability, and security.
My backend systems are built to support real users, high traffic, and future product expansion.
What I can build for you:
RESTful APIs and backend architecture
Authentication systems (JWT, OAuth, role-based access)
Database design and integration (SQL / NoSQL)
SaaS backend systems
Admin panel APIs
Payment and subscription logic (Stripe integration)
Real-time systems (if required)
Cloud deployment setup (AWS / Firebase / etc.)
This is NOT:
Simple script-based API work
One-off endpoint creation
Basic backend without structure
This is production-grade backend engineering for SaaS products.
WHO THIS IS FOR
SaaS startups building scalable platforms
Mobile app developers needing backend systems
Businesses moving from prototype to production
Founders needing secure API architecture
I don’t just write APIs — I build backend systems that power entire products.
This is not just API creation — I design complete backend systems that power SaaS products, mobile apps, and web platforms with proper structure, scalability, and security.
My backend systems are built to support real users, high traffic, and future product expansion.
What I can build for you:
RESTful APIs and backend architecture
Authentication systems (JWT, OAuth, role-based access)
Database design and integration (SQL / NoSQL)
SaaS backend systems
Admin panel APIs
Payment and subscription logic (Stripe integration)
Real-time systems (if required)
Cloud deployment setup (AWS / Firebase / etc.)
This is NOT:
Simple script-based API work
One-off endpoint creation
Basic backend without structure
This is production-grade backend engineering for SaaS products.
WHO THIS IS FOR
SaaS startups building scalable platforms
Mobile app developers needing backend systems
Businesses moving from prototype to production
Founders needing secure API architecture
I don’t just write APIs — I build backend systems that power entire products.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$299
|
Standard
$1,299
|
Advanced
$2,999
|
|---|---|---|---|
| Delivery Time | 6 days | 14 days | 25 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 3 | 5 | 7 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $800
Additional Revision
+$50
Additional Page
(+ 1 Day)
+$80
Content Upload
(+ 2 Days)
+$150
Authentication & Role System Upgrade
(+ 3 Days)
+$299
Performance & Scalability Optimization
(+ 5 Days)
+$399
Payment & Subscription Backend (Stripe)
(+ 6 Days)
+$499Frequently asked questions
6 reviews
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OL
Omar L.
Apr 26, 2026
Stripe Solution
Hasnain is professional, knowledgeable, has excellent communication skills, patient, and is a pleasure to work with. He provided a top-notch solution in a reasonable amount of time. I could not recommend him highly enough.
EB
Elliott B.
May 11, 2023
Fixing issues and adding push notifications
I have worked with Hasnain a couple of times now and his work is excellent! He's fast to react to issues and creates great code. I will definitely be re-hiring him!
EB
Elliott B.
Apr 18, 2023
React Native Chat Implementation
Hasnain is an amazing developer and I can’t wait to contract him again on my next project. I’d highly recommend if you’re looking for someone with a great depth of knowledge in the world of app building and specifically react native. Thank you for your effective and efficient work!
EB
Elliott B.
Apr 6, 2023
App Development for TBD Lounge
I highly recommend Hasnain, he accepted my project and delivered it in a timely manner and above my expectations. I will definitely be working with him again and look forward to it.
MA
Masood A.
Dec 22, 2021
Need a react native developer
For my first time working with Husnain Z, he has been great in his communication has been frequent and clear. He has delivered my project completely and i am happy with results. This is the best service on Upwork. He's helpful in every way possible. I look forward to working with him again in the future.
About H M Hasnain
Full Stack Product Engineer for MVPs, SaaS & AI Products
Lahore, Pakistan - 10:55 am local time
As a Full Stack Product Engineer, I specialize in building end-to-end digital products — from idea validation to production deployment. My focus is fast execution, clean architecture, and product-driven engineering decisions.
I build systems designed to scale into real, production-ready products with strong performance, reliability, and maintainability.
I specialize in fast MVP development with production-ready architecture.
⚙️ What I build
• SaaS platforms (multi-tenant, scalable systems)
• AI-powered applications (OpenAI / LLM integrations)
• MVPs for startups
• Mobile apps (iOS & Android)
• Backend systems & APIs
• Full-stack web applications
🧠 How I work
• Understand your idea and business goals
• Design scalable system architecture
• Build fast MVP iterations
• Deploy production-ready products
• Optimize for performance and scale
🚀 Why founders work with me
• Focus on real product outcomes, not just code
• Experience in SaaS, AI, and mobile product systems
• Strong product + engineering mindset
• Fast execution from idea → MVP
• Reliable long-term technical partner
🧰 Tech Stack
React • Next.js • Node.js • TypeScript • React Native • Flutter • Firebase • PostgreSQL • MongoDB • Docker • REST APIs • OpenAI / LLM APIs
Steps for completing your project
After purchasing the project, send requirements so H M Hasnain can start the project.
Delivery time starts when H M Hasnain receives requirements from you.
H M Hasnain works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Analysis
Understand system needs and define architecture
Database Design
Design scalable data structure