Azure Licensing System Developer for Autodesk Revit Plugin (C# / .NET 8)

# Azure Licensing System Developer for Autodesk Revit Plugin (C# / .NET 8) ## Project Overview I am developing a commercial Autodesk Revit 2025 plugin written in C# (.NET 8) and need a secure, scalable licensing system hosted on Microsoft Azure. This is initially a one-time project to design and implement the licensing infrastructure, with potential follow-up work for additional plugin development, backend improvements, maintenance, and support. The selected freelancer must agree to sign an NDA before project details and source code access are provided. ## Scope of Work Design and implement a licensing and subscription management system for a desktop plugin. Main requirements: ### Backend (Azure) Set up and configure a cloud-based licensing backend using Microsoft Azure, preferably with a cost-efficient architecture suitable for a small number of initial users but scalable for future growth. Preferred stack (open to suggestions): * Azure Functions or Azure App Service * Azure SQL Database * Azure Key Vault * REST API in C# / ASP.NET Core (.NET 8) System should support: * License creation * License activation * License validation * Subscription expiration handling * Device / machine binding * License deactivation / transfer * Usage logging (basic telemetry optional) ### Desktop Plugin Integration Assist with integration of licensing into a Revit plugin built with: * C# * .NET 8 * Autodesk Revit 2025 API Licensing flow should support: * First-time activation via license key * Secure machine fingerprinting / device registration * Periodic online validation * Graceful offline mode with temporary cached license token * Protection against simple key sharing / duplication ### Security Requirements Need practical security for a commercial niche product, including: * Secure API authentication * Token-based validation (JWT or similar) * Encrypted local license storage * Secret management using Azure services * Basic anti-tampering recommendations for .NET plugin distribution ## Deliverables Expected deliverables: * Working Azure licensing backend * Database schema * API endpoints * Plugin-side licensing integration guidance or implementation * Deployment documentation * Architecture diagram / technical notes * Recommendations for future scaling ## Future Work (Potential Extension) This may evolve into a longer collaboration involving: * Additional plugin feature development * Revit API development * Backend improvements * License dashboard / admin portal * Maintenance and monitoring * Payment integration (Stripe or similar) ## Required Skills Please apply only if you have strong experience in most of the following: * C# * .NET 8 / ASP.NET Core * Microsoft Azure * Azure Functions / App Services * SQL database design * Desktop application licensing systems * Security / authentication * API design * Experience with plugin licensing systems is a big plus * Autodesk Revit API experience is a strong plus ## Nice to Have Experience with: * Commercial software licensing * SaaS subscriptions * Stripe or payment webhook integration * Obfuscation / anti-tamper tools for .NET * CAD / BIM / Autodesk ecosystem ## When Applying Please include: 1. Relevant similar projects you have built 2. Recommended architecture for this project 3. Estimated timeline 4. Budget aceptance 5. Availability for future support ## NDA Requirement By applying to this job, you confirm that you are willing to sign a Non-Disclosure Agreement (NDA) before receiving access to proprietary source code, business details, or architecture documentation.