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Senior .NET Full Stack Developer · Top Rated Plus on Upwork
I'm Hashir Nadeem. I build and take over web applications with C#, ASP.NET Core, React and Azure, for healthcare platforms, SaaS products and Progressive Web Apps. Hire me as your .NET full stack developer, React developer or Azure developer.
“He takes full ownership of the work, understands problems quickly and always comes back with clear, practical solutions.”
Upwork client, Full-Stack Developer for SaaS TakeoverMarketplace ranking
Ranked by earnings over the last 90 days against freelancers who actually earned in that period. Source: UpHunt, an independent Upwork ranking tool, November 2026.
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From people I reported to
Written by people who managed me directly. Each one is public on my LinkedIn profile.
Selected work
Twelve projects from my Upwork portfolio. Each card says what the product is, what I built and the stack, with a link to the live site where one is public.
Healthcare platform
A patient-facing platform for a Brooklyn clinic offering family medicine, aesthetics and wellness services.
Enterprise analytics platform
An enterprise platform that brings business analytics, finance, HR, projects and customer services into one secure place.
Multi-tenant SaaS
A billing and reconciliation platform that connects dispatch data, rate confirmations, driver documents, invoices and payments in one workflow.
HVAC SaaS marketing website
The marketing website for a commercial HVAC survey platform, built from scratch to turn visitors into trial users.
Government portal
A bilingual portal for Qatar's Ministry of Commerce and Industry that connects users with local manufacturers.
Digital loyalty platform
A platform that replaces paper loyalty cards with digital stamp and points cards for businesses.
Gaming marketplace
A secure marketplace for buying and selling game accounts, currency, items, top-ups and boosting services.
Mining back-office portal
A back-office platform that replaced manual processes across mining operations with one central system.
Inventory and operations system
A business operations platform that brings inventory, orders and vendors into one system.
Event and group payments PWA
A Progressive Web App for running group events and collecting shared payments on desktop and mobile.
Vulnerability management platform
A platform for identifying, prioritising and mitigating security risks, with a fast experience across devices.
Apple Wallet and Google Wallet passes
A pass-generation system built from scratch for loyalty cards and promotional coupons.
Tech stack
The tools I use on client projects, grouped by where they sit in the stack.
Services
The kinds of work I take on most, with past projects for each.
Patient booking, clinic and practice platforms, scheduling integrations, payments and memberships.
Past work Balance Choice Care, dental practice SaaS, healthcare insurance analytics
Multi-tenant architecture, subscriptions, admin dashboards, reporting and taking over existing codebases.
Past work Truck Billing Platform, RTUMap, SaaS takeover
Secure sign-in, role-based access, embedded analytics and cloud deployment for enterprise platforms.
Past work FITEEN, Qatari Products Portal
Installable, mobile-friendly and offline-first apps from one web codebase.
Past work RTUMap, FairShare
Stripe and Square checkout, wallets, and Apple Wallet and Google Wallet passes.
Past work BeLoyal, Wallet Loyalty Cards, XMarket
Inventory, orders, scheduling, workforce tracking and legacy modernisation to Blazor.
Past work MineFox, Luxe
Career
Six years of professional software work, newest first.
Enterprise analytics on .NET and Azure, and a government portal on .NET 8.
56 jobs for clients in healthcare, SaaS, logistics, loyalty and operations.
Billing and reconciliation automation, React and PostgreSQL PWA.
CQRS backend, Blazor business apps, Web Forms to Blazor migration, .NET MAUI.
WordPress to React and .NET rebuild, Redis caching, admin portal.
.NET and MongoDB backend, wallet passes, Google Cloud.
REST APIs in .NET, Angular admin portal, Dynamics 365 middleware.
Take it with you
Take my details with you as a PDF.
Two-page .NET resume: summary, skills, experience and education. PDF, US Letter.
Upwork stats, featured projects, client reviews and work history in one PDF.
Getting downloads ready.
Message me on Upwork, WhatsApp (+92 313 2613274) or LinkedIn with your requirements, and I will reply with a practical plan.