Harsh deep G.

𝐒𝐞𝐧𝐢𝐨𝐫 .𝐍𝐄𝐓 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞 | 𝐌𝐮𝐥𝐭𝐢-𝐓𝐞𝐧𝐚𝐧𝐭 𝐒𝐚𝐚𝐒 | 𝐀𝐏𝐈 & 𝐋𝐞𝐠𝐚𝐜𝐲 𝐌𝐨𝐝𝐞𝐫𝐧𝐢𝐳𝐚𝐭𝐢𝐨𝐧 | 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞 | 𝐏𝐚𝐲𝐦𝐞𝐧𝐭 | 𝐀𝐈 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦s I am a senior .NET SaaS Architect/Developer with 16+ years of experience building production-ready SaaS and enterprise applications using .NET, .NET Core, ASP.NET Zero, ABP io, Angular, Azure, and OpenAI. I specialize in multi-tenant SaaS architecture, ASP.NET Zero/ABP development, HIPAA/GDPR-compliant healthcare platforms, legacy .NET modernization, and AI integration. Over the past 16+ years, I’ve architected and developed systems across healthcare, fintech, and enterprise B2B SaaS including a multi-tenant platform that powers a business generating $20M+ in annual revenue. 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗛𝗘𝗟𝗣 𝗬𝗢𝗨 𝗪𝗜𝗧𝗛 • 𝗠𝘂𝗹𝘁𝗶-𝗧𝗲𝗻𝗮𝗻𝘁 𝗦𝗮𝗮𝗦 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 Design and development of scalable multi-tenant SaaS platforms using .NET, ASP.NET Core, ABPio, and ASP.NET Zero including tenant isolation, subscription billing, licensing, permissions, background jobs, and modular APIs. • 𝗔𝗦𝗣.𝗡𝗘𝗧 𝗭𝗲𝗿𝗼 & 𝗔𝗕𝗣𝗶𝗼 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Extensive experience building, upgrading, customizing, and modernizing ASP.NET Zero, ASP.NET Boilerplate, and ABPio applications. I can help with architecture, module development, version upgrades, Angular integration, performance optimization, and migration to modern .NET. • 𝗛𝗜𝗣𝗔𝗔 / 𝗚𝗗𝗣𝗥 & 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗦𝗮𝗮𝗦 Architecture and development of healthcare and regulated SaaS platforms with data encryption, tenant isolation, role-based access control (RBAC), audit logging, secure cloud infrastructure, and privacy-focused application design. • 𝗔𝗜 & 𝗢𝗽𝗲𝗻𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 Integration of OpenAI and Azure OpenAI into existing .NET/SaaS applications. Experience includes AI assistants, RAG workflows, document processing, healthcare AI workflows, AI agents, and secure enterprise AI integrations. • 𝗟𝗲𝗴𝗮𝗰𝘆 .𝗡𝗘𝗧 𝗠𝗼𝗱𝗲𝗿𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻 Modernization of legacy .NET Framework and monolithic applications to modern .NET, Angular, modular architectures, APIs, containers, and Microsoft Azure with an emphasis on minimizing business disruption. 𝗖𝗢𝗥𝗘 𝗧𝗘𝗖𝗛𝗡𝗢𝗟𝗢𝗚𝗜𝗘𝗦 • .NET / C# / ASP.NET Core / Entity Framework Core • ASP.NET Zero / ABPio / ASP.NET Boilerplate • Multi-Tenant SaaS / SaaS Architecture / REST APIs • Angular / TypeScript • Microsoft Azure / Azure App Service / Azure Functions / Azure SQL • Azure DevOps / CI/CD / Docker • SQL Server / PostgreSQL / Redis • OpenAI API / Azure OpenAI / RAG / AI Agents • HIPAA / GDPR / Healthcare SaaS • SSRS / BoldReports 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘 • 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀: Proven track record delivering large and long-term Upwork engagements. • 𝟭𝟲+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: Senior-level architecture and hands-on development, from product design through production deployment. • 𝗗𝗶𝗿𝗲𝗰𝘁 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: You work directly with me on architecture, technical decisions, development, and delivery. • 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗚𝗿𝗮𝗱𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴: Clean, maintainable architecture designed for security, scalability, performance, and long-term development. • 𝗖𝗹𝗲𝗮𝗿 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻: Regular progress updates, early risk identification, and practical technical recommendations. If you’re building a new SaaS product, modernizing an existing .NET/ASP.NET Zero application, developing a HIPAA/GDPR-focused healthcare platform, or integrating OpenAI into an existing system. Message me with your current stack and biggest bottleneck. I'll tell you in the first reply whether ASP.NET Zero upgrade or a rebuild makes sense. I’ll suggest the best way to approach it.