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 - 3:39 pm local time
I design and implement robust backend architectures from system design and database modeling to deployment, monitoring, and deep production debugging. My core stack includes Node.js, NestJS, Express.js, and Python, with strong expertise in PostgreSQL, MySQL, and MongoDB. I build clean REST and gRPC APIs, multi-tenant platforms, microservices, and monorepo-based systems designed for scale and long-term maintainability.
I have extensive experience integrating payment gateways, banking APIs, SaaS platforms, and third-party services, optimizing systems for reliability, performance, and high availability under real production load. I also develop AI-powered backend solutions, including LLM integrations, retrieval systems, and evidence-based processing pipelines using Python.
Strengths:
* Scalable system and database design
* Clean, modular, maintainable code
* API architecture (REST, gRPC)
* Microservices and distributed systems
* Fintech and payment integrations
* Performance optimization and production debugging
* AI and LLM backend integrations
Core Skills:
Node.js, NestJS, Express.js, Python, PostgreSQL, MySQL, MongoDB, Redis, Kafka, System Design, Multi-Tenant Architectures, Monorepos, Microservices, API Integrations, Git
I take full ownership of backend systems and deliver reliable, production-ready solutions without compromising architecture or code quality.
Let's connect to make your idea work.
𝗥𝗲𝗴𝗮𝗿𝗱𝘀,
Sufian
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.