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You will get Full Stack Developer | MERN Web Application | Mongo DB | Express AWS Redux

Umair A.Status: Offline
Umair A. Umair A.
4.8
Top Rated
Preview imagePreview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Umair, priced and ready to go.
Umair A.Status: Offline
Umair A. Umair A.
4.8
Top Rated
Preview imagePreview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Umair, priced and ready to go.

Project details

With over 7+ years of experience in Full Stack development, I have built products for clients from scratch to turn them into market scalable successful businesses. I work on fewer projects and prefer if the idea is great and it's an interesting app to build. Kindly ping me to discuss your product/idea before buying.
Available for meetings.
My Job Success Score is 100% let's work in a great way and keep it like that.
Thanks!!!
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, PSD to HTML, Performance Optimization
What's included
Service Tiers Starter
$250
Standard
$400
Advanced
$800
Delivery Time 3 days 6 days 9 days
Number of Revisions
UnlimitedUnlimitedUnlimited
Number of Pages
247
Design Customization
Content Upload
-
Responsive Design
Source Code
4.8
52 reviews
88% Complete
(46)
6% Complete
(3)
4% Complete
(2)
1% Complete
(0)
2% Complete
(1)

MC

Michael C.
5.00
Jun 1, 2026
Private Equity Analytics Dashboard Great services, and communication.

GD

Geoffrey D.
5.00
Mar 30, 2026
Prototype Web Application Development with AI Document Processing

DE

Damon E.
3.00
Jan 13, 2026
React + Supabase Developer for Code Stabilization & QA

TD

Tony D.
5.00
Nov 1, 2025
30 minute consultation Umair delivered an exceptional Product Requirements Document (PRD) for our MVP project. His understanding of the technical architecture, feature scope, and multi-AI integration was spot on. I look forward to moving forward with him on the project.

AA

Abdul Qader A.
5.00
Oct 14, 2025
Full stack developer - React / React Native / Node / AWS / Micro services Umair has been very helpful in building our project. He is constantly proactive and understands the job very well. His technical expertise makes it easy for us to explain our requirements in simple language and see our expected results become true. I would surely work again with Umair, and in fact, I am at the moment!
Umair A.Status: Offline

About Umair

Umair A.Status: Offline
AI Engineer | OpenAI, LangChain, RAG | FullStack React, Python, AWS
100% Job Success
4.8  (52 reviews)
Lahore, Pakistan - 7:23 pm local time
AI Engineer. I ship production LLM apps (RAG, agents, OpenAI integrations) for SaaS founders.

$400K+ earned on Upwork · 100% Job Success · 14,000+ billable hours · Top Rated Plus (Top 3%)

Available in US Eastern business hours so your 9 AM meetings work perfectly.

✅ Production AI I've shipped:
1. RAG pipelines with vector retrieval, re-ranking, and eval harnesses
2. Multi-step AI agents using LangChain, LangGraph, and custom orchestration
3. OpenAI, Claude, and Gemini integrations with model-agnostic fallbacks
4. Voice AI with ElevenLabs, MCP servers, Google Agentspace, A2A
5. Token cost controls, prompt-injection guardrails, hallucination monitoring

✅ Best fit if you're thinking:
1. "My OpenAI bill is spiraling and I need it controlled without losing quality."
2. "My RAG retrieval returns irrelevant chunks. The answers are wrong."
3. "My AI agent loops, times out, or breaks on edge cases."
4. "I need to move from prototype to production but don't know how to scale LLM calls."
5. "I want to swap models (OpenAI, Claude, Gemini) without rewriting my stack."
6. "I need evals and monitoring, not vibes-based testing."

✅ Stack:
GenAI: LangChain, LangGraph, LlamaIndex, OpenAI, Anthropic, ElevenLabs, MCP, A2A, Google Agentspace
Backend: Python (FastAPI, Flask, Django), Node.js, .NET Core
Frontend: React, Next.js, Angular
Cloud: AWS (Lambda, API Gateway, ECS, Step Functions, RDS), Docker
Data: PostgreSQL, MongoDB, DynamoDB, Pinecone, Weaviate, PGVector

✅ SaaS products I've built or contributed to (10k+ active users):
C60 AI (LLM-driven product features), Pabau (full-stack plus AI features), Lingvano, OpenTherapy, NurseIO

✅ What working with me looks like:
1. Token cost and latency projections before we build
2. Evaluation harness for retrieval accuracy and response quality
3. Model-agnostic architecture so you can swap providers
4. Guardrails against prompt injection, hallucination, and runaway costs
5. Production monitoring (cost, latency, quality) from day one

📞 Book a 30-min consultation to scope your project.

Lahore-based. Fluent English. 9 years lead engineer experience before Upwork.

Steps for completing your project

After purchasing the project, send requirements so Umair can start the project.

Delivery time starts when Umair receives requirements from you.

Umair works on your project following the steps below.

Revisions may occur after the delivery date.

Marking the milestones

Diving the project requirements into chunks and getting client approval for the desired output and estimated time for the each milestone.

Review the work, release payment, and leave feedback to Umair.