You will get Backend development in Typescript, AI & 3rd Party API Integration, Caching
Project details
Let’s discuss your requirements in **Upwork Chat** first so I can provide a clear timeline and a fixed price or estimated hours based on your architecture.
I specialize in architecting high-performance, secure, and scalable backend systems using Node.js, NestJS, Express.js, and Python. I focus on clean code, modular architecture, and production-ready deployments for Fintech, SaaS, AI, and E-commerce.
• Robust Backend Architecture – Scalable multi-tenant systems, microservices, and high-availability infrastructure.
• Advanced API Development – High-performance REST and gRPC APIs with strict security standards.
• Database Engineering – Expert schema design and optimization for PostgreSQL, MySQL, MongoDB, and Redis.
• AI & LLM Pipelines – Integration of LLMs, RAG, and automated data retrieval engines.
• Fintech Integrations – Secure connections with banking APIs and payment gateways (Stripe/PayPal).
• Performance & Scalability – Kafka/RabbitMQ, caching, and load balancing for high production loads.
• Legacy Code Refactoring – Deep debugging and transforming technical debt into maintainable codebases.
Send me a message today, and let’s build a foundation for your application!
I specialize in architecting high-performance, secure, and scalable backend systems using Node.js, NestJS, Express.js, and Python. I focus on clean code, modular architecture, and production-ready deployments for Fintech, SaaS, AI, and E-commerce.
• Robust Backend Architecture – Scalable multi-tenant systems, microservices, and high-availability infrastructure.
• Advanced API Development – High-performance REST and gRPC APIs with strict security standards.
• Database Engineering – Expert schema design and optimization for PostgreSQL, MySQL, MongoDB, and Redis.
• AI & LLM Pipelines – Integration of LLMs, RAG, and automated data retrieval engines.
• Fintech Integrations – Secure connections with banking APIs and payment gateways (Stripe/PayPal).
• Performance & Scalability – Kafka/RabbitMQ, caching, and load balancing for high production loads.
• Legacy Code Refactoring – Deep debugging and transforming technical debt into maintainable codebases.
Send me a message today, and let’s build a foundation for your application!
Programming Languages
JavaScript, TypeScriptCoding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$100
|
Standard
$400
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 30 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Design Customization | - | - | - |
Content Upload | |||
Responsive Design | - | - | - |
Source Code |
About Sufian
Senior Full Stack Developer | Nestjs | Nextjs | AI Integrations
Multan, Pakistan - 9:15 pm local time
I work on three kinds of project:
• New builds: from architecture and data model through to a deployed, working product.
• Rescues: half-finished or abandoned codebases that need someone to understand them, stabilize them, and finish them.
• Features and integrations — adding to an existing product without breaking what already works.
Recent work: a dental marketing attribution platform built end to end, a rebuilt transaction pipeline for an AI budgeting app that was failing under load, and the integrations layer for an AI SEO platform including a live Shopify App Store app.
How I work: I ask questions before I write code. You get a written scope with milestones, an update at the end of every working day, and code the next developer can pick up without a handover call. I don't disappear mid-project.
If you have something that's stuck, or a feature that needs to exist next month, send me the details and I'll tell you honestly whether I'm the right fit.
Steps for completing your project
After purchasing the project, send requirements so Sufian can start the project.
Delivery time starts when Sufian receives requirements from you.
Sufian works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements
I will collect full requirements for the project and estimate completion timeline.
Stack Decision
We will decide on cost effective and fast tech stack decision. This also includes any third party integrations.