You will get scalable backend APIs with Node.js & NestJS
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Top Rated
Project details
Power your application with a Node.js & NestJS Developer specializing in Scalable Backend APIs. I build secure, high performance backend systems that support SaaS platforms, enterprise applications, AI products, and modern web applications. Every API is designed for speed and long term maintainability.
Services I Offer
✔ Node.js and NestJS Backend Development
✔ REST API and GraphQL API Development
✔ FastAPI and Python API Development
✔ Microservices, WebSockets, Redis, Kafka, and RabbitMQ Integration
✔ PostgreSQL, MongoDB, Prisma, TypeORM, and Database Optimization
✔ JWT Authentication, OAuth, API Security, Docker, Kubernetes, AWS, CI CD, Cloud Deployment, and API Integration
I use clean architecture, SOLID principles, scalable system design, caching, queue management, event driven architecture, testing, monitoring, logging, and performance optimization to deliver production ready backend solutions built for growth.
**SEO Keywords:** Node.js Developer, NestJS Developer, Node.js & NestJS Developer, Scalable Backend APIs, Backend API Developer, REST API Developer, GraphQL Developer, FastAPI Developer, Python Developer
Services I Offer
✔ Node.js and NestJS Backend Development
✔ REST API and GraphQL API Development
✔ FastAPI and Python API Development
✔ Microservices, WebSockets, Redis, Kafka, and RabbitMQ Integration
✔ PostgreSQL, MongoDB, Prisma, TypeORM, and Database Optimization
✔ JWT Authentication, OAuth, API Security, Docker, Kubernetes, AWS, CI CD, Cloud Deployment, and API Integration
I use clean architecture, SOLID principles, scalable system design, caching, queue management, event driven architecture, testing, monitoring, logging, and performance optimization to deliver production ready backend solutions built for growth.
**SEO Keywords:** Node.js Developer, NestJS Developer, Node.js & NestJS Developer, Scalable Backend APIs, Backend API Developer, REST API Developer, GraphQL Developer, FastAPI Developer, Python Developer
Programming Languages
JavaScript, ASP.NET, C#Coding Expertise
Cross Browser & Device Compatibility, PSD to HTML, Performance OptimizationWhat's included $99
These options are included with the project scope.
$99
- Delivery Time 3 days
- Number of Revisions 2
- Design Customization
- Content Upload
- Responsive Design
- Source Code
6 reviews
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UU
Usman U.
Aug 11, 2026
Technical review + customer‑facing validation of AI Agent Security
Great work and presentation
BY
Bakeel Y.
Aug 6, 2026
Nwaya Landing Page
Working with Uzman was a great experience from start to finish. He built our landing page, **nwayaksa.com**, from the ground up and truly brought our vision to life.
What I appreciated most was that he didn't just build a website—he thought through the user experience, paid attention to the details, and was always open to feedback. Every revision was handled quickly, communication was clear throughout the project, and I always felt he genuinely cared about delivering the best possible result.
The website is fast, modern, mobile-friendly, and beautifully designed. Behind the scenes, he also set everything up professionally, ensuring the site is stable, easy to maintain, and deploys seamlessly whenever updates are made.
Beyond his technical expertise, Uzman was reliable, proactive, and incredibly easy to work with.
I highly recommend Uzman to anyone looking for a skilled web developer, and I look forward to working with him again on future projects.
What I appreciated most was that he didn't just build a website—he thought through the user experience, paid attention to the details, and was always open to feedback. Every revision was handled quickly, communication was clear throughout the project, and I always felt he genuinely cared about delivering the best possible result.
The website is fast, modern, mobile-friendly, and beautifully designed. Behind the scenes, he also set everything up professionally, ensuring the site is stable, easy to maintain, and deploys seamlessly whenever updates are made.
Beyond his technical expertise, Uzman was reliable, proactive, and incredibly easy to work with.
I highly recommend Uzman to anyone looking for a skilled web developer, and I look forward to working with him again on future projects.
ST
Support T.
Jul 8, 2026
Technical Interviewer & Hiring Advisor — Senior Full-Stack Hire (NestJS / Next.js / AWS)
Very Helpful and professional!
IM
Ivana M.
Jul 8, 2026
LLM Agent Developer
It was a real pleasure collaborating with this freelancer. Communication was clear and easy throughout, tasks were handled with care, and everything was delivered in a professional and reliable way. Collaboration was smooth and enjoyable, and the overall quality of the work met our expectations very well. A great experience overall.
GY
Ghulam Y.
Jan 1, 2026
Backend API Performance Specialist Needed for NestJS / Node.js
Muhammad did a great job fixing our NestJS API issue. He was quick, professional, and delivered clean, optimized code. Communication was smooth throughout the project. Highly recommended.
About Muhammad Uzman
AI Integration Engineer | AI Agents, RAG, LangGraph, Node.js, Next.js
100%
Job Success
Lahore, Pakistan - 1:01 am local time
Most AI engineers can wire up an LLM. Far fewer can ship it as a real product: a NestJS backend with multi-tenant isolation and queues, a Next.js frontend users want to use, and a codebase your team can maintain. I have spent 8+ years building Node.js, NestJS and Next.js systems at scale, and I bring that engineering discipline to every AI build.
My most recent system is an AI document intelligence platform on Next.js, NestJS and PostgreSQL, processing 1,000+ documents daily for 50+ enterprise clients with a LangGraph RAG pipeline at 92% retrieval accuracy and 70% faster processing. Before that, ShopFloorIO GPT: a multi-agent AI knowledge platform with hierarchical agent inheritance, LangGraph orchestration, Weaviate semantic retrieval and a feedback-learning agent, on a NestJS backend with a real-time Next.js interface.
𝗪𝗛𝗬 𝗠𝗢𝗦𝗧 𝗔𝗜 𝗣𝗥𝗢𝗝𝗘𝗖𝗧𝗦 𝗙𝗔𝗜𝗟
Retrieval returns the wrong context, so the model confidently answers from the wrong document. Agents have no error handling or tracing, and are lost the moment a tool call fails. Prompt logic is scattered everywhere and nobody can maintain it.
I treat these as engineering problems, not prompt problems. Versioned prompts, retrieval evaluation against a real test set, queue-backed job processing, tracing, and documentation your team can pick up.
𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗
AI Agents and Multi-Agent Systems: LangGraph and LangChain orchestration, routing and inter-agent collaboration, hierarchical agent architectures, tool calling and function calling, Model Context Protocol MCP, AI workflow automation, AI assistants and copilots.
RAG and Knowledge Systems: Retrieval Augmented Generation pipelines, AI document intelligence, PDF parsing, semantic search, vector search, embeddings, OCR, enterprise knowledge bases, internal knowledge assistants, chat with your documents. Weaviate, Pinecone, Qdrant, ChromaDB.
AI Chatbots and Conversational AI: customer support agents, AI sales and lead qualification bots, internal copilots, real-time streaming chat over WebSockets, CRM automation.
Full-Stack AI SaaS Products: Next.js frontends with server components, streaming UI and Vercel deployment, on NestJS and Node.js backends with multi-tenant architecture, JWT and OAuth OIDC authentication, RBAC permissions, REST and GraphQL API development, BullMQ and RabbitMQ queues, Stripe billing and admin dashboards.
𝗦𝗘𝗟𝗘𝗖𝗧𝗘𝗗 𝗪𝗢𝗥𝗞
Auxee, AI Document Intelligence Platform. Next.js, NestJS, PostgreSQL, LangGraph RAG. 1,000+ documents daily, 50+ enterprise clients, 92% retrieval accuracy, 99.8% extraction accuracy.
ShopFloorIO GPT, Multi-Agent AI Knowledge Platform. LangGraph orchestration on NestJS, Weaviate collections, multiple LLM providers (OpenAI GPT-4/5, Anthropic Claude, Google Gemini, OpenRouter) behind one LangChain interface with per-agent model selection.
Ducky, Carbon Accounting and ESG SaaS. Next.js and Node.js with GraphQL, automated ERP ingestion, GHG Protocol emissions engine across Scope 1, 2 and 3, ESRS Excel reporting, D3.js dashboards, Trigger.dev ETL.
Enterprise Backend at Scale. 15+ NestJS microservices at 99.5% availability, API gateway handling 10,000+ hourly requests at sub-200ms, event-driven architecture on Redis and RabbitMQ across 20+ services, WebSocket platform for 1,000+ concurrent users.
𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞
Backend: Node.js, NestJS, Express, TypeScript, REST API, GraphQL, WebSockets, microservices, BullMQ, RabbitMQ, Prisma, TypeORM
Frontend: Next.js, React, TypeScript, Tailwind CSS, server components, streaming UI
AI and LLM: LangChain, LangGraph, OpenAI API, Anthropic Claude, Google Gemini, OpenRouter, RAG, prompt engineering, function calling, MCP, LlamaIndex, Python, FastAPI
Data: PostgreSQL, MongoDB, Redis, Weaviate, Pinecone, Qdrant, ChromaDB
Cloud: AWS, Vercel, Docker, Kubernetes, GitHub Actions, CI/CD, Stripe
𝗛𝗢𝗪 𝗜 𝗪𝗢𝗥𝗞
I scope before I quote. The gap between a two-week and a two-month AI build is always in requirements nobody wrote down, and I would rather find that in a 30-minute call than in month two. You get weekly working demos instead of status reports, fast responses across US and EU hours, and documentation at handoff.
𝗪𝗛𝗢 𝗜 𝗪𝗢𝗥𝗞 𝗕𝗘𝗦𝗧 𝗪𝗜𝗧𝗛
SaaS companies adding AI to an existing Node.js, NestJS or Next.js product. Startups building an AI-first MVP that has to survive real users. Enterprise teams that need a knowledge assistant over internal documents and cannot ship something that hallucinates.
If you are unsure whether an AI agent is even the right solution, send me the problem and I will tell you honestly. Sometimes the answer is a deterministic workflow, not an agent.
Message me with what you are building and I will reply with a real technical opinion, not a template.
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Delivery time starts when Muhammad Uzman receives requirements from you.
Muhammad Uzman works on your project following the steps below.
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