You will get a scalable REST API backend built with NestJS, Node.js, Python, or Golang
Project details
You will get a scalable, production-ready backend built by a developer with 3+ years of experience across NestJS, Node.js, Golang, Python FastAPI, and Flask.
I work across the full backend scope REST and GraphQL APIs, microservices, JWT and OAuth2 authentication, database design with PostgreSQL, MongoDB, or Redis, third-party integrations like Stripe or AWS, real-time features with WebSockets, and Docker-based deployments with CI/CD pipelines.
Every delivery includes clean source code, Swagger or Postman documentation, unit and integration tests, and a deployment-ready setup.
Whether you are building from scratch, migrating a legacy system, or adding new services to an existing product, send me the details and I will get back to you within 24 hours.
I work across the full backend scope REST and GraphQL APIs, microservices, JWT and OAuth2 authentication, database design with PostgreSQL, MongoDB, or Redis, third-party integrations like Stripe or AWS, real-time features with WebSockets, and Docker-based deployments with CI/CD pipelines.
Every delivery includes clean source code, Swagger or Postman documentation, unit and integration tests, and a deployment-ready setup.
Whether you are building from scratch, migrating a legacy system, or adding new services to an existing product, send me the details and I will get back to you within 24 hours.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$100
|
Standard
$250
|
Advanced
$400
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | |||
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$25 - $100
Additional Revision
+$10
Design Customization
(+ 3 Days)
+$50Frequently asked questions
About Junaid
Senior AI Automation & Backend Engineer | RAG | n8n | Node.js | SaaS
Multan, Pakistan - 12:26 am local time
That's the kind of work I do.
I'm Junaid. I've spent the last 5 years building backend systems and AI automation workflows for SaaS companies, e-commerce platforms, healthcare tools, and B2B enterprise products. Some of those systems now handle 10,000+ daily active users. Some have cut manual work by 60–90%. All of them are still running in production.
I work across the full stack when needed, but my sweet spot is backend architecture, AI integrations, and automation, the parts of a product that most developers find intimidating but that make the biggest difference to how a business actually runs.
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WHAT I ACTUALLY WORK ON
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AI & RAG Systems
I build context-aware AI pipelines, document Q&A systems, intelligent chatbots, and AI-driven product recommendation engines. I've worked with LangChain, LlamaIndex, OpenAI, Claude, and Qdrant vector databases on real client projects, not just side experiments.
Workflow Automation
If your team is doing something manually that a computer should be doing, that's where I come in. I use n8n, Make, and custom webhook pipelines to connect tools, eliminate repetitive tasks, and give people back their time.
Multi-Tenant SaaS Platforms
I've built full SaaS products from scratch, metered Stripe billing, role-based access control, database-per-tenant architecture, and multi-subdomain deployments. The kind of infrastructure that lets you onboard enterprise clients without things breaking.
Backend APIs & Integrations
Node js, NestJS, Express, PostgreSQL, MongoDB, Redis, GraphQL this is my daily stack. I've also integrated HubSpot, WhatsApp Business API, QuickBooks, Airtable, and BigCommerce into production systems processing tens of thousands of records monthly.
Frontend When Needed
React, Next js, Tailwind CSS. I can own the full product end-to-end so you're not coordinating between two developers on a single feature.
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SOME THINGS I'VE SHIPPED
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A sales CRM with real-time voice transcript management and WhatsApp Business API integration cut manual data entry for the sales team by 90%.
An AI chatbot for a ventilation manufacturer that processes 1,000+ technical PDFs and gives instant product recommendations using a RAG pipeline built with LlamaIndex and Qdrant.
An AI-powered SEO audit platform that crawls websites, runs GPT-4 content analysis across 20+ languages, and reduced manual audit time by 85%.
A multi-tenant HR diagnostics SaaS with a dynamic questionnaire engine, weighted scoring, automated PDF reports, Stripe billing, and RBAC deployed across 4 production subdomains with zero downtime.
A test prep platform backend handling 12,000+ concurrent users increased engagement by 42% and improved user retention by 35%.
A HubSpot integration syncing 50,000+ records monthly and a CLI migration tool that moved 15,000 records between CRM platforms with zero data loss.
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TECH I USE DAILY
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Backend: Node js · NestJS · Express · Python · Golang
Frontend: React · Next js · Tailwind CSS · TanStack Query
AI / ML: LangChain · LlamaIndex · OpenAI · Claude · RAG · Vector Databases · Prompt Engineering
Automation: n8n · Make · Zapier · Webhook Pipelines
Databases: PostgreSQL · MongoDB · Redis · Supabase · MySQL
DevOps: Docker · Kubernetes · AWS · GCP · DigitalOcean · GitHub Actions · CI/CD
Integrations: Stripe · HubSpot · WhatsApp Business API · QuickBooks · Airtable · BigCommerce · Firebase
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A FEW THINGS WORTH KNOWING
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I'm not going to take your project and disappear. I give regular updates, flag problems early, and actually explain what I'm doing
and why.
I push back when I think something won't scale or when there's a better approach not to be difficult, but because I'd rather have that conversation before building the wrong thing.
I write production-ready code. That means documentation, test coverage, and CI/CD pipelines not just something that works on my machine.
And I only take on a few projects at a time, so when I commit to yours, you actually have my full attention.
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If what you're building needs someone who can handle complex systems, AI pipelines, automation workflows, or a full SaaS product send me a message and let's talk through what you need.
Steps for completing your project
After purchasing the project, send requirements so Junaid can start the project.
Delivery time starts when Junaid receives requirements from you.
Junaid works on your project following the steps below.
Revisions may occur after the delivery date.
Initial Consultation (If Required)
Understand the client's needs, project scope, and objectives.
Project Kick-off
Align on the project plan and initiate the development process.