You will get backend server and rest API development using Node js and Mongodb
Top Rated

Project details
I specialize in backend development using Node.js, Express, MongoDB, and REST APIs building secure, scalable, and high-performance server-side applications.
I help startups and enterprises create custom backend architectures for SaaS, mobile apps, CRMs, and dashboards. I focus on clean structure, speed, and scalability, ensuring your backend runs smoothly under real-world load.
What I deliver:
Node.js backend with Express framework
REST API development & integration
MongoDB database setup & schema design
Authentication, authorization & validation
Error handling, testing, and optimization
Cloud deployment support
Rated 5 for reliability and quality I turn your idea into a fast, secure, and maintainable backend system built for scale.
I help startups and enterprises create custom backend architectures for SaaS, mobile apps, CRMs, and dashboards. I focus on clean structure, speed, and scalability, ensuring your backend runs smoothly under real-world load.
What I deliver:
Node.js backend with Express framework
REST API development & integration
MongoDB database setup & schema design
Authentication, authorization & validation
Error handling, testing, and optimization
Cloud deployment support
Rated 5 for reliability and quality I turn your idea into a fast, secure, and maintainable backend system built for scale.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$350
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 30 days |
Number of Revisions | 2 | 4 | Unlimited |
Number of Pages | 1 | 3 | 3 |
Design Customization | |||
Content Upload | - | - | |
Responsive Design | - | ||
Source Code |
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GS
Graham S.
Nov 17, 2025
two websites plus contact form fix and recovery
Top notch freelancer. Checked all the important boxes. I look forward to working with Ahmar again.
DG
Denise G.
Oct 13, 2025
ProductNation Website Front End Redesign & Core Web Vitals Optimisation
SL
Steven L.
Apr 8, 2025
Establish a process and ongoing work performing News Jacking for our clients
RM
Ronny M.
Nov 14, 2024
Superfoods Woocommerce Website
he is an expert developer with expertise in SEO. Recommended
JA
Joseph A.
Oct 16, 2024
Website Fix
About Ahmar
AI Engineer | LLM Apps, RAG, AI Agents & Automation | Full-Stack SaaS
100%
Job Success
Lahore, Pakistan - 2:31 am local time
Top Rated Plus on Upwork | 100% Job Success | $100K+ earned
I work with SaaS founders, startups, and agencies who need to ship fast without cutting corners on architecture. I have helped clients in Healthcare, EdTech, PropTech, and Fintech turn unclear ideas into working products, replace manual workflows with automated systems, and add real AI features to existing apps.
WHAT I BUILD
→ AI chatbots & assistants trained on your own data (docs, website, CRM, knowledge base)
→ RAG pipelines & document Q&A systems using vector search and embeddings
→ AI agents for lead qualification, support, reporting, and internal operations
→ Workflow automation connecting your APIs, CRM, email, Slack, Airtable, HubSpot, and n8n
→ Full-stack SaaS platforms with auth, billing, dashboards, and multi-tenant architecture
→ AI features added to existing products: semantic search, data extraction, content generation, recommendations
TECH STACK
Frontend: React.js, Next.js, TypeScript, Tailwind CSS
Backend: Node.js, Express, NestJS, Python, FastAPI
AI/LLM: OpenAI, Claude, Gemini, LangChain, LangGraph, RAG, vector search, prompt engineering, AI agents
Automation: n8n, webhooks, REST APIs, CRM & email automation
Databases: PostgreSQL, MySQL, MongoDB, Supabase, Firebase, Redis
Cloud: AWS, Vercel, DigitalOcean, Docker, CI/CD
Payments: Stripe, PayPal, subscription billing
INDUSTRIES
Healthcare: patient portals, appointment workflows, document processing, HIPAA-aware systems
EdTech: LMS platforms, AI tutors, student dashboards, assessment automation
PropTech: property management systems, listing automation, tenant/owner portals
Fintech: payment systems, financial dashboards, secure multi-tenant SaaS
GOOD FIT IF
- You want to add AI features to an existing product
- You need repetitive workflows automated end-to-end
- You want a chatbot or AI agent trained on your own data
- You need a senior dev who understands both full-stack engineering and AI, not just one or the other
- You have been burned by a freelancer who delivered a "demo" instead of something that actually runs in production
I think like a product partner first. Send me your workflow or product idea and I will tell you the fastest reliable way to build it, including what I would skip or simplify to save you time and budget.
Steps for completing your project
After purchasing the project, send requirements so Ahmar can start the project.
Delivery time starts when Ahmar receives requirements from you.
Ahmar works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Gathering & Understanding