You will get your ASP.NET Core authentication fixed, tested, and documented
Top Rated
Project details
Your ASP.NET Core login is broken. Users can't sign in, tokens expire wrong, or OAuth stopped working after an upgrade. I find the cause and fix it.
9+ years building .NET systems. I've built and secured auth across multi-tenant SaaS in healthcare, hospitality, and payroll. AWS Cognito RS256 token verification, Azure Entra ID SSO, OpenIddict, ASP.NET Core Identity with JWT and TOTP two factor, RBAC and tenant isolation under HIPAA aware and PCI ready design.
What I work with: .NET Core and .NET 8, Angular and React front ends, Azure AD and Entra ID, AWS Cognito, OAuth 2.0, OpenID Connect, JWT and refresh token flows.
You get the fix in your repo, tested, plus a short write up of what was actually wrong and why, so the same failure doesn't come back.
Send me the repo and the error before you order. I'll tell you which tier you need, or tell you straight if it's outside this scope.
9+ years building .NET systems. I've built and secured auth across multi-tenant SaaS in healthcare, hospitality, and payroll. AWS Cognito RS256 token verification, Azure Entra ID SSO, OpenIddict, ASP.NET Core Identity with JWT and TOTP two factor, RBAC and tenant isolation under HIPAA aware and PCI ready design.
What I work with: .NET Core and .NET 8, Angular and React front ends, Azure AD and Entra ID, AWS Cognito, OAuth 2.0, OpenID Connect, JWT and refresh token flows.
You get the fix in your repo, tested, plus a short write up of what was actually wrong and why, so the same failure doesn't come back.
Send me the repo and the error before you order. I'll tell you which tier you need, or tell you straight if it's outside this scope.
Programming Languages
ASP.NET, TypeScript, C#Coding Expertise
Localization, Security, DesignWhat's included
| Service Tiers |
Starter
$249
|
Standard
$279
|
Advanced
$449
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 4 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
CI/CD to Azure/AWS
(+ 1 Day)
+$120Frequently asked questions
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About Nabeel
Senior AI Agent & MCP Engineer | .NET, TypeScript, Python
100%
Job Success
Lahore, Pakistan - 11:25 pm local time
What you get:
• Speed: my own AI SaaS went from zero to live and selling in 16 days, built solo
• Less manual work: AI agents and n8n automations that run without a human watching, like an onboarding flow that cut new client setup time by 50 percent
• Production reliability: 231 automated tests and CI health checks stand behind my own product, and your build gets the same standard
Need an AI feature that survives production, or a backend that ships and stays up? That is my work. I work across the full build: architecture, REST and GraphQL APIs, multi-tenant data, payments, real-time, AI/LLM features, cloud, CI/CD. And I do the reliability work most people skip.
Selected production work:
BriefMeet. My own AI meeting transcription SaaS, solo-built and launched in 16 days. It runs Whisper transcription in 90+ languages and Gemini meeting intelligence on ASP.NET Core 8, PostgreSQL, React, and TypeScript. Billing goes through Lemon Squeezy with idempotent webhooks. 231 automated tests, CI/CD with production health checks, and Google indexed it on day one.
RoverDent. Multi-tenant dental and healthcare SaaS built as nine .NET 8 microservices behind a React 18 dashboard. Temporal runs multi-day patient follow-up across calls, SMS, email, and WhatsApp without losing state, and Python FastAPI services power a real-time voice AI agent on LiveKit. Stripe and Twilio run in production. HIPAA-aware audit trails, tenant isolation, RBAC.
VisionONE. Enterprise ERP and payroll on .NET 8, with EF Core for the domain model and Dapper for heavy ledger reads. The Angular 20 frontend uses NgRx and AG Grid for data-dense payroll views. The part I am most proud of is real-money payouts through M-Pesa STK Push, where webhook callbacks and status polling keep payment state correct. Hangfire runs the salary jobs, and TOTP two-factor auth secures access.
What I help clients build:
AI agents and MCP servers: Claude Agent SDK, OpenAI, tool design, human in the loop control, deployed and monitored
Multi-tenant SaaS with RBAC, tenant isolation, and secure architecture
AI and LLM features: OpenAI, RAG (Qdrant, LlamaIndex), voice agents, chatbots, automation with n8n and Temporal
REST and GraphQL APIs, microservices, CQRS, clean architecture
Modern frontends: React, Angular (NgRx, AG Grid), TypeScript, responsive UIs
Payments and billing: Stripe, PayPal, M-Pesa, Authorize.Net, PCI-ready infrastructure, webhooks, signature verification
Real-time features: SignalR, WebSockets, MQTT, event-driven backends
Cloud and DevOps: AWS, Azure, Docker, GitHub Actions, Azure DevOps, CI/CD
Legacy modernization: .NET Framework to .NET 8, desktop to web
Core stack: C#, ASP.NET Core, .NET 8/9, Python, FastAPI, Node.js, React, Angular, Next.js, TypeScript, PostgreSQL, SQL Server, Redis, Cosmos DB, AWS, Azure.
How I work: I learn your codebase deeply, flag risk and tradeoffs early, and give honest timelines with no surprises mid-project. My best work happens on long engagements where reliability matters. Hand me a hard problem and it gets shipped.
Tell me what you are trying to ship and your current stack. I will tell you straight if I am the right fit and how I would start. Happy to do a quick call through Upwork.
Steps for completing your project
After purchasing the project, send requirements so Nabeel can start the project.
Delivery time starts when Nabeel receives requirements from you.
Nabeel works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Review
I receive your repo access, environment details, and error logs.
Issue Diagnosis
I analyze your authentication middleware, cloud config, and token flows.