MuhammadHuzaifa Awan
Senior Full Stack Developer
I build scalable web applications, AI-powered SaaS products, enterprise systems, and modern digital experiences.
- 3+
- Years shipping production
- 95%
- Redis cache hit rate
- <50ms
- API response under load
- 5.0
- Upwork client rating
Senior engineer who owns problems end to end.
I'm a Senior Full Stack Developer with 3+ years architecting and shipping SaaS platforms, AI-driven applications and payment infrastructure alongside US-based product teams.
I own complex problems end-to-end, from database design and API architecture to frontend performance and production monitoring. I've built systems serving 100+ concurrent users at sub-50ms response times with 95% Redis cache hit rates, integrated Claude and OpenAI with structured outputs, and rolled out multilingual experiences at scale.
My day-to-day is .NET Core, React, Next.js, and TypeScript, but I'll reach for whatever the problem actually needs: WebSockets for live preview, iTextSharp for dynamic PDFs, Stripe for subscriptions, a custom MCP server for AI tooling.
3+
Years shipping production
95%
Redis cache hit rate
<50ms
API response under load
5.0
Upwork client rating
What I do
- Architect multi-tenant SaaS platforms end-to-end
- Build real-time experiences with WebSockets and live preview
- Tune SQL and Redis for sub-50ms responses under load
- Integrate Claude and OpenAI with structured outputs
- Ship Stripe subscription, one-time, and webhook flows
- Roll out multilingual (i18n) experiences at scale
- Generate dynamic multilingual PDFs (iTextSharp)
- Lead legacy refactors that cut technical debt
Everything you need to ship a serious product.
From zero-to-one SaaS builds to modernizing legacy systems and wiring AI into your stack. One senior engineer, full ownership.
Enterprise Software
Multi-tenant platforms and internal systems built to survive real load, with clean architecture, monitoring, and 5,000+ line refactors that cut technical debt.
- Multi-tenant SaaS
- Domain modelling
- Observability
SaaS Development
Zero-to-one product builds covering onboarding, billing, dashboards, and real-time features, shipped end-to-end to paying users.
- Stripe billing
- Onboarding flows
- Realtime dashboards
AI Integration
Claude and OpenAI wired into products with structured outputs, prompt engineering, and a custom MCP server exposing 80+ tools.
- Claude / OpenAI
- MCP servers
- Structured outputs
API Development
Well-documented REST and real-time APIs. WebSockets for live preview, webhooks for payments, and contracts your frontend can trust.
- REST & WebSockets
- Webhooks
- Versioned contracts
Cloud Architecture
Deploys that scale, using Azure DevOps pipelines, Fly.io, Vercel, Redis caching, and query tuning for sub-50ms responses under concurrency.
- Azure / Fly.io / Vercel
- Redis caching
- CI/CD pipelines
Legacy Modernization
Migrating aging monoliths to modern full-stack architecture without downtime. 3s page loads brought down to under 500ms, defects resolved at scale.
- Monolith migration
- Perf tuning
- Defect burndown
Production work shipped to real users.
SaaS platforms, AI products, and payment systems. Not demos. Every project below is live or in active client delivery.
AI-powered intelligence platform
Apex Synchronia Intelligence
AI analytics platform for affiliate-driven businesses, with portfolio overview, revenue trends, territories, configurable metrics, and an admin panel. Integrates Claude and OpenAI with structured outputs, prompt engineering, and CSV ingestion.
2
LLMs orchestrated
Multi
Client roll-up
Custom MCP server · 80+ AI tools
Studio OS
Solo-engineered AI integration platform that lets Claude control a team's tools through one secure interface. Exposes 80+ tools across ClickUp, Outlook (dual M365 tenants via Microsoft Graph), Apple Health, and Oura. OAuth 2.0 device-code auth, an SSE to Streamable HTTP migration, and a Windows installer with AES-256-GCM credential encryption.
80+
AI tools exposed
AES-256
Credential encryption
LEO Multilingual Salon Builder
Real-time multi-tenant website builder powering salon storefronts across the LEO Innovate SaaS platform. WebSocket-driven live preview pushes updates without refreshes, with six themes, custom typography, and full English and Spanish i18n.
LEO Salon Analytics Dashboard
Bilingual operations dashboard for salon owners, covering live queue, walk-in traffic, expected earnings, low-stock alerts, and reviews. Backed by Redis caching with a 95% hit rate and sub-50ms responses under 100+ concurrent users.
Real estate listings platform
Virginia MLS Solutions
Real estate platform for Virginia MLS Solutions. Built around nine React pages backed by SQL Server, covering property listings, search, and detail views connected to live data, with a clean, responsive UI and a fast browsing experience.
LEO Innovate Onboarding Portal
End-to-end bilingual onboarding wizard covering owner info, plan selection, add-ons, branch setup, services, teams, migration, and Stripe payment. Firebase OTP verification, save-and-resume, and dynamic PDF service-agreement generation.
Scan. Compare. Detect. Decide.
Network Change Scanner
Desktop application that scans a network, captures a snapshot of the current state, and gives a clear go or no-go decision. On each run it compares against the last stored copy, and if the data has changed it flags exactly what was added, removed, or modified and warns you not to proceed. Built for fast, reliable change detection on a live network.
LEO Self-Service Kiosk
Touch-optimized check-in kiosk for in-salon walk-ins, with phone-number lookup and Firebase OTP, guest count, walk-in vs reserved flow, service browser, and stylist selection. Pairs with a live TV queue display.
Affiliate Management System
Direct-selling platform with tiered bundles, rank progression (Consultant to Director), referral tracking, and member dashboards. Stripe subscriptions, one-time payments, and webhook handling on Next.js and Supabase.
The tools I ship with.
Depth across the full stack: backend architecture, modern frontend, data, cloud, and AI.
Backend
- C#
- .NET Core
- .NET 8
- ASP.NET
- Node.js
- REST APIs
- GraphQL
- SignalR
Frontend
- React
- Next.js
- TypeScript
- JavaScript
- Tailwind CSS
- Framer Motion
Data & Cloud
- SQL Server
- PostgreSQL
- Redis
- Supabase
- Azure
- Docker
- Fly.io
- Vercel
AI & Payments
- Anthropic
- OpenAI
- MCP
- Stripe
- Firebase OTP
- iTextSharp
3+ years shipping with US product teams.
Senior Full Stack Developer
LEO Innovate·SaaS Salon Management Platform
- Architected a real-time website builder with WebSocket-powered live preview on ASP.NET Core and React across a multi-tenant SaaS environment.
- Tuned SQL Server queries and introduced a Redis caching strategy, hitting a 95% cache hit rate and sub-50ms responses under 100+ concurrent users.
- Built the analytics dashboard, TV queue display, and self-service kiosk check-in flow with Firebase OTP verification.
- Led the multilingual (English and Spanish) rollout with proper URL structure, routing, and redirects.
- Drove a 5,000+ line C# refactor that cut technical debt by ~30% and reduced production incidents by 40%.
Full Stack Developer
FABCO Inc. / Divisional Public School·Legacy Migration & Platform Build-out
- Led migration of a legacy monolith to a modern full-stack architecture on .NET and JavaScript, now serving 200+ daily active users.
- Optimized the MySQL layer, dropping page loads from 3s to under 500ms via query restructuring and indexing.
- Resolved 50+ legacy defects, improving system reliability by ~40%.
- Designed and built RESTful APIs and responsive frontend interfaces from scratch.
What clients say about working with me.
Verified 5-star reviews from real Upwork clients.
“Awan jumped in fast, understood the issue without needing any handholding, and had it fixed within a day. Clean code, no cutting corners. Will definitely hire again for our next sprint.”
ReliableSolution OrientedClear CommunicatorAccountable for OutcomesDetail Oriented
The CEO at LEO Innovate offered to write a personal letter of recommendation after the salon SaaS platform work. Reference available on request.
Always building.
A snapshot of recent open-source and client-facing work.
Let's build something worth shipping.
Have a product in mind, a system to modernize, or AI to integrate? Reach me by email or LinkedIn, I reply within a day.
mhuzaifaawan7@gmail.com
Location
Remote · Working across US timezones