You will get Hybrid Mobile Application | React Native | IOS | Android
Top Rated
Project details
I specialize in developing highly responsive, fast, and scalable React applications with seamless RESTful API integration. Our projects stand out due to clean architecture, optimized performance, and intuitive UI/UX, ensuring smooth user experiences across all devices.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$200
|
Standard
$400
|
Advanced
$1,600
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 9 days |
Number of Revisions | 2 | 4 | Unlimited |
Number of Pages | 2 | 4 | 8 |
Responsive Design | |||
Slider/Scroller | - | ||
Custom Admin Panel | - | - | |
Server Upload | |||
Browser Compatibility |
Optional add-ons
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Fast Delivery
+$100 - $250
52 reviews
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MC
Michael C.
Jun 1, 2026
Private Equity Analytics Dashboard
Great services, and communication.
GD
Geoffrey D.
Mar 30, 2026
Prototype Web Application Development with AI Document Processing
DE
Damon E.
Jan 13, 2026
React + Supabase Developer for Code Stabilization & QA
TD
Tony D.
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.
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!
About Umair
AI Engineer | OpenAI, LangChain, RAG | FullStack React, Python, AWS
100%
Job Success
Lahore, Pakistan - 8:38 am local time
$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.
Confirming Acceptance
Kindly wait for acceptance of project.