Mayur K.

Need a senior developer to build a secure, scalable SaaS platform, modernize an aging .NET system, automate workflows, or add AI capabilities? I help businesses build SaaS platforms, backend/cloud systems, workflow automation, AI-powered features, APIs, and integrations that reduce manual work and support growth. Microsoft-certified developer with 11+ years across healthcare, operations, finance, and process-heavy environments, combining SaaS, backend development, automation, cloud, security, AI/LLMs, and integrations. I focus on understanding the business problem and delivering secure, scalable, reliable, maintainable systems. ==> What I specialize in - Multi-tenant SaaS: tenant-aware architecture, auth, RBAC, secure data, orchestration, scalable backends. - Workflow automation: reminders, approvals, scheduling, reporting, orchestration, background processing, AI-assisted workflows. - AI apps & LLMs: assistants, agents, RAG, chatbots, OpenAI/GPT, LLM APIs, structured outputs, prompt workflows, vector search. - AI agents & automation: agents connected to APIs, CRMs, business systems, and workflow engines to automate tasks, route work, generate content, analyze data, and support decisions. - APIs & integrations: REST APIs, messaging, payments, healthcare/CRM/AI services, custom integrations. - Cloud & serverless: Azure, AWS, Lambda, SNS/SQS, Cognito, event-driven processing. - Legacy modernization: ASP.NET/.NET Framework to secure, scalable, maintainable modern .NET. - Secure apps: auth, RBAC, JWT, OAuth, 2FA, tenant isolation, permissions, privacy. - Real-time: Node.js/TypeScript, WebSockets, real-time data, external APIs, performance integrations. - SaaS & MVPs: architecture/POC through MVP, integrations, deployment, automation, production. AI/ML in apps ➣ OpenAI embeddings for AI lead scoring ➣ ChatGPT + n8n workflow/backend automation ➣ Temporal + LLMs for dynamic, long-running workflows ➣ Azure AI for OCR claim management, extraction/classification ➣ AI assistants/copilots in CRMs, admin panels, internal/business apps ➣ NLP/NLU + LLMs for chatbots, survey analysis, appointments/conversational workflows ➣ RAG with LLMs, embeddings, vector stores, domain knowledge Tech stack Backend: C#, ASP.NET Core, .NET, Web API, Entity Framework, Node.js, Python, TypeScript Databases: SQL Server, PostgreSQL Cloud: Azure, AWS, Lambda, SNS/SQS, Cognito Frontend: Blazor, React, Angular Security: JWT, OAuth, RBAC, 2FA, tenant-aware authorization Integrations: Stripe, Twilio, HubSpot, OpenDental, NexHealth, custom APIs Architecture: SaaS, workflows, serverless, integration layers, event-driven/service-based apps AI/LLMs: OpenAI, GPT, ChatGPT API, LLM APIs, embeddings, RAG, vector stores, assistants, agents, chatbots Automation: Temporal, n8n, Hangfire, LLM workflows, AI-assisted automation AI dev tools: Microsoft Copilot, ChatGPT, Cursor, Claude Code; AI-assisted scaffolding, refactoring, debugging, human-reviewed development Work ➣ Multi-tenant dental PMS: reminders, scheduling, follow-ups, AWS, APIs, secure access ➣ Real-time trading: Node.js, Python, WebSockets, live updates, secure integrations ➣ Secure healthcare dashboards/backends for clinical/operational workflows ➣ Advocacy/operations platforms: modular services, auth, automation, integrations ➣ SaaS backend modernization: APIs, billing, CRM integrations, automation, cloud ➣ Legacy .NET apps modernized into secure, scalable, maintainable systems ➣ AI features: OpenAI/GPT, embeddings, assistants, RAG, chatbots, automated workflows ➣ AI automation: LLMs, Temporal, n8n, APIs, CRMs, internal systems ➣ OCR/document workflows: Azure AI extraction, classification, claim processing Why clients work with me ➣ Strong backend/architecture ➣ Clear communication and execution ➣ Maintainable code ➣ Secure, scalable design ➣ Reliable delivery with context ➣ Practical problem-solving across workflows/integrations ➣ Identify the real business pain point before recommending a solution ➣ Identify where AI/automation creates real value not AI for its own sake I work best with clients who need more than implementation. For SaaS, AI-powered products, intelligent workflows, backend systems, integrations, or modernization, I understand the problem, design the architecture, and deliver a reliable production system. Send me a message with your goals, system challenges, or AI/automation ideas.