You will get a High-Performance Backend APIs with Python, FastAPI or Node.js
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Project details
Build a secure, scalable backend that powers your application today and grows with your business tomorrow.
I develop high-performance backend APIs and server-side applications using Python, FastAPI, Django, Node.js, Express.js, PostgreSQL, MongoDB, MySQL, Redis, REST APIs, and GraphQL. Whether you're building a SaaS platform, AI application, mobile backend, marketplace, dashboard, or enterprise system, I design backend architectures that are fast, maintainable, and built for production.
Every project follows clean architecture principles with secure authentication, optimized database design, well-documented APIs, and scalable code that makes future development easier.
What you'll get:
✔ Custom Backend API Development
✔ REST API & GraphQL Development
✔ Python (FastAPI & Django)
✔ Node.js & Express.js
✔ Authentication (JWT, OAuth, RBAC)
✔ Database Design & Optimization
✔ Third-Party API Integrations
✔ Payment Gateway Integration
✔ API Documentation
✔ Production-Ready Source Code
✔ 2 Months Post-Launch Support
Whether you're building a new product or improving an existing backend, I'll deliver a solution that's reliable, secure, and ready to scale.
I develop high-performance backend APIs and server-side applications using Python, FastAPI, Django, Node.js, Express.js, PostgreSQL, MongoDB, MySQL, Redis, REST APIs, and GraphQL. Whether you're building a SaaS platform, AI application, mobile backend, marketplace, dashboard, or enterprise system, I design backend architectures that are fast, maintainable, and built for production.
Every project follows clean architecture principles with secure authentication, optimized database design, well-documented APIs, and scalable code that makes future development easier.
What you'll get:
✔ Custom Backend API Development
✔ REST API & GraphQL Development
✔ Python (FastAPI & Django)
✔ Node.js & Express.js
✔ Authentication (JWT, OAuth, RBAC)
✔ Database Design & Optimization
✔ Third-Party API Integrations
✔ Payment Gateway Integration
✔ API Documentation
✔ Production-Ready Source Code
✔ 2 Months Post-Launch Support
Whether you're building a new product or improving an existing backend, I'll deliver a solution that's reliable, secure, and ready to scale.
Programming Languages
HTML & CSS, JavaScript, PythonCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$395
|
Standard
$895
|
Advanced
$1,495
|
|---|---|---|---|
| Delivery Time | 4 days | 7 days | 15 days |
Number of Revisions | 2 | 3 | 5 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | - | - | |
Source Code |
Frequently asked questions
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JL
Jonathan L.
Aug 11, 2026
Full Stack Development - Build an AI Application According to a Plan
n/a
JP
Jeff P.
Jul 9, 2026
Full stack developer
Hard working guy
DL
Daniel L.
Feb 9, 2026
Build MVP: AI Receptionist / Missed-Call Lead Capture for UK Garages
LB
Leigha B.
Jan 22, 2026
Help automating front desk tasks in healthcare clinics using AI
I recently hired Shahbaz for a pretty big project, and he absolutely exceeded my expectations. From the very first conversation, it was clear how knowledgeable he is in his field—he offered insightful suggestions and solutions that showed real expertise.
What stood out most was his professionalism and patience. He explained everything clearly, never rushed me when I had questions, and guided me step-by-step through decisions I wasn’t sure about. He was always responsive, one step ahead, kept me updated, and hit every target and milestone either on time or early.
Thanks to his excellent work and great communication, the project turned out even better than I had hoped. I will be working with him on future projects, and I highly recommend Shahbaz to anyone looking for top-tier, reliable talent. I am so blessed to have found him!
What stood out most was his professionalism and patience. He explained everything clearly, never rushed me when I had questions, and guided me step-by-step through decisions I wasn’t sure about. He was always responsive, one step ahead, kept me updated, and hit every target and milestone either on time or early.
Thanks to his excellent work and great communication, the project turned out even better than I had hoped. I will be working with him on future projects, and I highly recommend Shahbaz to anyone looking for top-tier, reliable talent. I am so blessed to have found him!
KS
Kenji S.
Dec 16, 2025
AI/ML Engineer - Advanced Model Development and Quick Prototyping
About Shahbaz
AI & SaaS Full Stack Developer | Business Automation & Custom Software
100%
Job Success
Lahore, Pakistan - 3:16 am local time
I’m a Full Stack Developer focused on building and improving production software across AI applications, SaaS platforms, CRM/automation systems, healthcare workflows, marketplaces, and custom business applications.
Over the last 8 years, I’ve worked across the full product lifecycle, from understanding an existing system and finding what is actually broken, to designing the backend, building the frontend, integrating AI/third-party services, and taking the product toward a reliable production implementation.
What I work on
• AI-powered applications and workflow automation
• AI receptionists, voice agents, GPT and telephony integrations
• SaaS platforms and multi-tenant business applications
• CRM, ERP and operational automation
• Custom web applications and internal business systems
• REST APIs, backend architecture and third-party integrations
• React / Next.js frontends and Node.js backends
• PostgreSQL, Redis, Docker and cloud infrastructure
• Existing application upgrades, integrations and performance improvements
• MVP development and production-ready product builds
Recent Upwork work
I’ve completed projects involving:
• AI receptionist / missed-call lead capture for UK garages
• AI automation for healthcare clinic front-desk workflows
• AI application development based on an existing product plan
• AI/ML model development and rapid prototyping
• GoHighLevel white-label CRM and AI automation
• Smart AI call-center development with GPT and voice APIs
• React + Node.js SaaS development
• Full-stack development and upgrades for a freight marketplace
I’m also currently working on SaaS, CRM automation, payroll/commission management, and blockchain-related software projects.
How I approach projects
I don’t start by blindly writing code.
First I understand the product, existing architecture, business workflow, integrations, data flow, and constraints. Then I determine what should be changed, what should remain stable, and how the implementation should be structured so the result is maintainable rather than becoming another layer of technical debt.
Depending on the project, I can work across:
✔ Frontend: React, Next.js
✔ Backend: Node.js, NestJS, Python.
✔ Data: PostgreSQL, Redis
✔ Infrastructure: Docker, AWS / Google Cloud
✔ Integrations: REST APIs, Stripe, OAuth, telephony/SMS, third-party services
✔ AI: LLM integrations, AI automation, conversational AI, voice workflows
If you already have an application, I can work with the existing architecture rather than forcing a rewrite.
If you're starting from an idea or MVP, I can help turn the requirements into a practical technical implementation.
If you're dealing with an existing system that works but needs upgrades, integrations, automation, or architectural improvements, that's also where I can add significant value.
My goal is simple: build software that works today and gives you a solid foundation for what comes next.
Steps for completing your project
After purchasing the project, send requirements so Shahbaz can start the project.
Delivery time starts when Shahbaz receives requirements from you.
Shahbaz works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Architecture
We'll review your project requirements, database structure, API specifications, and business goals.
Backend Development
I'll develop your backend, database architecture, authentication, APIs, and required integrations.