With over 10+ years of experience in software development, I transform innovative business ideas into reliable, scalable digital products. I specialise in AI-enhanced systems and full-stack development that automate workflows, boost efficiency, and deliver tangible business value. My expertise spans AI Chatbots, LLMs, Model Training, Document Intelligence, AI Dashboards, and Custom API Integrations. Tech Stack and Tools: I leverage state-of-the-art development and AI tools to transition swiftly from concept to production, ensuring code remains clean, maintainable, and scalable. AI and Dev Tools: Cursor, v0.dev, Lovable.dev, GitHub Copilot, Claude. Cloud and Deployment: Vercel, Azure, AWS. Core Technologies: ASP.NET Core, MERN Stack, Next.js, React, Node.js, Express, Flutter, React Native, .NET MAUI. Services I Offer: Custom AI Agents and Automation: Crafting intelligent systems using Generative AI, LLMs, and AI agents to minimize manual tasks. Web and Full-Stack Development: Building modern, responsive web applications with scalable architecture and intuitive UIs. Cross-Platform Mobile Apps: High-performance mobile solutions focusing on user experience. API Development and Integrations: Designing secure APIs and integrating third-party services. Database Design and Management: Scalable structures, ORM tools, caching strategies, and optimized queries. Data Visualization: Interactive dashboards using Power BI, Tableau, and AI-enhanced analytics. Vibe Coding and Backend Support: Specializing in backend development for Vercel/Lovable-generated codebases, including GitHub setup and deployment. Why Work With Me: Clients choose me for practical solutions, clear communication, and reliable systems that perform consistently as products evolve. I prioritize stability and maintainability, ensuring your solution scales with your business. If you're envisioning an AI-powered product, SaaS platform, web application, or need assistance with APIs, backend systems, or deployment strategies, feel free to reach out.

I am a Senior Full Stack & AI Developer with deep expertise across the complete .NET ecosystem, Node.js, Next.js, React, Angular, Blazor, cloud platforms (AWS, Azure, GCP), and AI-powered application development solutions. As a Top Rated Plus freelancer with 8,000+ hours on Upwork and over a decade of hands-on experience, I specialize in building end-to-end software solutions across web, mobile, and desktop platforms. My work focuses on production-grade systems that are scalable, secure, and aligned with real business workflows. I do not build demos. I build systems that businesses rely on. --- My Skills & Expertise Full Stack Application Development I design and develop complete applications from architecture to deployment, covering backend logic, frontend interfaces, APIs, databases, and cloud infrastructure. I take ownership of the full lifecycle rather than isolated tasks. .NET & Microsoft Ecosystem I work across the entire .NET stack to build enterprise-level applications using clean architecture, modular design, and long-term maintainability principles. AI-Powered Application Development I integrate AI directly into applications to enhance automation, decision-making, search, and user interaction (AI used as a functional system component, not a surface feature). AI Agents, Chatbots & RAG Systems I build intelligent agents and conversational systems using Retrieval-Augmented Generation for context-aware responses, internal tools, and customer-facing platforms. Cloud Architecture & DevOps I deploy and manage applications across Azure, AWS, and GCP with a focus on scalability, cost control, security, and production stability. Automation & Workflow Orchestration I automate business processes and AI workflows using modern automation platforms to reduce manual work and improve operational efficiency. Database Design & Data Handling I design efficient, scalable data models and manage structured and unstructured data for high-performance applications. --- Core Technology Stack Backend & Application Frameworks • .NET Framework • .NET Core • ASP .NET • ASP .NET MVC • ASP .NET Web API • Node.js • Next.js • Blazor Server • Blazor WebAssembly • .NET MAUI (cross-platform mobile and desktop apps) • C# (primary language), JavaScript, TypeScript Frontend Technologies • Angular • Blazor • React • HTML, CSS, JavaScript (modern standards and performance-focused UI) AI & Intelligent Systems • OpenAI APIs • AI-powered application development • AI Agents & Chatbots • RAG (Retrieval-Augmented Generation) systems • LangChain • LangGraph • Vector databases • Context-aware automation and intelligent search Cloud Platforms & Infrastructure • Microsoft Azure • Amazon Web Services (AWS) • Google Cloud Platform (GCP) • CI/CD pipelines • Containerized deployments • Cloud security and monitoring Automation & Integration Tools • n8n • Zapier • Microsoft Power Automate • API integrations and system orchestration Databases & Data Storage • SQL Server • MongoDB • Relational and NoSQL database architecture • Performance optimization and data integrity Additional Languages & Tools • JavaScript, TypeScript, Tailwind CSS • Python (for AI, automation, and integrations) --- What I Deliver • End-to-end Web, Mobile, and Desktop Applications • Full Stack .NET Solutions with clean architecture • AI-powered platforms, agents, and chatbots • Cloud-native, scalable applications • Secure APIs and third-party integrations • Database-driven systems built for performance and scale --- I offer free consultation for custom application ideas and enjoy working with founders and teams to refine requirements, design architecture, and turn ideas into production-ready systems. I stand behind my work. If you are not satisfied, I provide a complete money-back guarantee with no questions asked. I am a problem solver and a doer. If you need someone who can take full ownership of your application and deliver results, let’s connect and discuss how to make it happen.

Top 3% Data Engineers on Upwork 🏆 99% Job Success Score Key Expertise 🔔 Azure Data Factory ETL pipelines 🔔 Azure Databricks data processing 🔔 Data warehouse design (Synapse / Snowflake / SQL) 🔔 SQL performance optimization 🔔 Power BI data modeling 🔔 Ai Automation I RAG 🎯 I’m a Data Engineer who builds reliable, AI-ready data systems. I help companies design scalable data pipelines and modern data warehouses on Azure so their analytics and reporting systems run faster and more reliably. Your analytics costs are rising or your data pipelines are becoming hard to maintain, I can help. I specialize in optimizing ETL and data platforms to reduce infrastructure and operational costs while improving reliability and performance. Clients typically see faster reporting, fewer data issues, and systems that scale without adding more engineers. ✔✔What My Clients Say (Check my Work History for More) ⭐⭐⭐⭐⭐ "Sachin is the best developer I've worked with. He's prompt, responsive, an incredible problem-solver, very professional, highly skilled, and a great team leader. He handles our portal's continuous development across all project phases: requirement gathering (including calls), detailed task creation, estimation, development, deployment across all environments, testing, wiki page creation, right technology stack and AWS resource selection, and ticket management! He leads the dev team while also contributing to development himself and supporting everyone. I'll certainly work with him again when we restart project development! Highly recommended developer." 👤 David Smith 🛠️ Core Engineering Expertise I deliver end-to-end data engineering services focused on reliability, scalability, and cost efficiency not just moving data. 🎯 Scalable Pipeline Development (ETL/ELT) Design and build efficient, production-grade ingestion and transformation pipelines using tools like Apache Airflow, Kafka, and cloud-native services built to scale without constant rework. 🎯 Data Warehouse & Lake Architecture Set up and optimize analytical data platforms (Snowflake, Databricks, Redshift, Google BigQuery) for fast queries, predictable costs, and long-term growth. 🎯 Data Quality & Reliability Implement validation, monitoring, and alerting to ensure data is accurate, consistent, and trusted across reporting, automation, and AI use cases. 🎯 Cloud Data Infrastructure Hands-on experience designing and managing data systems on AWS, GCP, and Azure with a focus on performance, security, and cost control. 🤝 Let’s Strengthen Your Data Foundation If you’re dealing with slow reports, rising data costs, or unreliable pipelines, I can help. I build clean, reliable data systems that support analytics today and AI-driven automation tomorrow so your data becomes an asset, not a bottleneck. Click 'Invite to Job' or send a message to schedule a call!

Experienced Blazor, C#/.NET, and Full-Stack Developer With over 10 years of experience, I help businesses build scalable, reliable, and maintainable web and desktop applications using React.js, Blazor, C#/.NET, SQL Server, Azure, and Entity Framework. My work spans AWS, WinForms, Web Services, and QuickBooks, ensuring end-to-end solutions that meet real business needs and deliver measurable results. 💼 Key Specialties: - .NET Technologies: .NET, ASP.NET, Blazor, Microservices, C#, VB.NET, Python, PyQt Guru, - Backend & Data: ASP.NET, .NET Core, Microservices, SQL Server, Stored Procedures, Entity Framework - Front-End & UI: Angular, React.js, Tailwind CSS, Ionic, Capacitor — optimized for responsive, performant interfaces - API & Integration: Node.js, Web APIs, Web Services, Elasticsearch - Desktop & Cross-Platform Apps: Electron, Ionic, Capacitor - Testing & Architecture: Design Patterns, Unit Testing (NUnit, Mock) ⚡ React | Next.js | Python | Node.js Developer | PyQt Specialist - React.js: Building dynamic, responsive, and user-friendly interfaces - Next.js: SEO-friendly sites with server-side and static rendering - Node.js: Robust backend APIs and efficient data handling - Python: Automation, data processing, and backend services 🛍 Vendure & Svelte 5 Specialist | Web Apps & Headless Commerce - Vendure setup, custom plugins, and GraphQL integration - Svelte5 for smooth, lightweight frontends - Clean architecture built for long-term performance 🤝 My Working Approach & Long-Term Collaboration - Translate requirements into clean, maintainable solutions - Communicate clearly and proactively - Deliver quality code with testing and documentation - Collaborate closely to solve complex technical challenges 📌 Turning ideas into real, working products: Whether it’s a dynamic web app, an API ecosystem, or a headless commerce platform, I can help you turn ideas into reality with modern technologies and reliable delivery. Let's meet and discuss your ideas further 😊

Production AI systems are what I build: RAG, agentic workflows, and real-time voice with sub-500ms latency. .NET and Python stacks. 15+ years shipping for production, including Intersight AI (RAG document intelligence on Azure OpenAI) and InTake AI (real-time voice agent on .NET Core + SignalR). Most "AI projects" stall at the gap between a working prototype and a system that holds up under real traffic, real edge cases, and real auditability. That gap is what I close. WHAT I ACTUALLY BUILD RAG systems with hybrid search, structured extraction, and confidence scoring (not just chunk-and-stuff) Agentic workflows where determinism, error recovery, and human-in-the-loop are designed in from day one Real-time voice AI with measured latency budgets across STT, LLM, and TTS Multi-tenant SaaS platforms with proper tenancy isolation, background jobs, and observability Production-grade .NET Core and Python (FastAPI) backends with full CI/CD, monitoring, and rollback paths WHERE I'VE SHIPPED EmpowerNow: an enterprise AI orchestration platform using Python FastAPI microservices. Developed Agentic RAG pipelines with support for Pinecone, Weaviate, Milvus, Qdrant, and Chroma. Intersight AI: Production RAG on Azure OpenAI with LangGraph, structured document extraction, clause-level scoring InTake AI: Real-time voice AI, sub-500ms end-to-end latency, .NET Core + SignalR streaming STT/TTS SkyBoss: Multi-tenant field-service SaaS serving hundreds of companies, Stripe billing, cross-account reporting Eureeca: Global equity crowdfunding platform, KYC/AML compliance SMP Pharmacy: HIPAA-compliant mobile app with EMR integration, RBAC, and audit trails THE STACK I REACH FOR LLM and AI: OpenAI, Azure OpenAI, LangGraph, LangChain, vector databases (Pinecone, ChromaDB, pgvector), structured outputs, evaluation harnesses Backend: Python (FastAPI), microservices, REST and GraphQL APIs, Redis, .NET Core, C#, PostgreSQL, SQL Server Frontend: Angular, React, Next.js, TypeScript Cloud: Azure (Functions, Container Apps, AI Search, App Service), AWS, Docker, Kubernetes basics, CI/CD pipelines HOW I WORK Each milestone ships with a Loom walkthrough and a shared staging environment you can poke at. Weekly written summary covering what shipped, what's blocked, what's next, so you're not chasing for status. I scope before I quote, push back when something won't scale, and write tests on day one rather than as cleanup. GMT+5, response within 2-3 hours during your working day. WHO THIS IS FOR Founders are moving an AI prototype to production. Teams modernizing legacy .NET or SaaS platforms. Companies that need a senior engineer who can own architecture decisions and ship, not just take tickets. If you're building chatbot wrappers or one-off scripts, I'm not the right fit. Happy to jump on a 30-minute Zoom to walk through your architecture and where I'd start.

I am a Senior Microsoft Software Engineer with 10+ years of professional experience and 12,000+ hours of hands-on work on Upwork, successfully delivering 300+ projects with a 100% Job Success Score and Top Rated status. I specialize in building enterprise-grade software solutions across the Microsoft ecosystem, focusing on Microsoft 365, Azure, and .NET-based applications. My work helps businesses automate workflows, integrate systems, and modernize legacy applications into scalable cloud-ready solutions. My core expertise includes: • Microsoft 365 development and integrations • Microsoft Graph API (Outlook, Excel, Teams, SharePoint integrations) • Office Add-ins (Excel, Word, Outlook using VSTO and Office.js) • Power Automate workflow automation and business process solutions • ASP.NET Core / .NET 8 Web APIs and backend systems • Azure cloud development (Functions, App Services, integration solutions) • OAuth2 / OpenID Connect / Microsoft Entra ID authentication and SSO • Desktop applications using WPF, WinForms, MVVM, and XAML • Cross-platform UI development using .NET MAUI and UWP • Legacy .NET Framework modernization and migration to modern .NET • AI Agents like Co-pilot, Cursor and Claude I also hold industry certifications including: • AWS Certified Developer – Associate • Microsoft Azure Fundamentals (AZ-900) • Microsoft Azure Data Fundamentals (DP-900) I specialize in connecting desktop applications, cloud services, and Microsoft 365 platforms into unified business systems. My focus is not just writing code, but delivering secure, maintainable, and scalable solutions that solve real business problems. Typical projects I work on: • Microsoft 365 integration and automation solutions • Office Add-ins for Excel, Outlook, and Word • Enterprise desktop applications with cloud connectivity • API development and system integrations using Graph API • Power Automate workflow design and optimization • Authentication and identity management systems (Azure AD / Entra ID) • Legacy system modernization and migration to modern .NET architecture I am comfortable working directly with business stakeholders, technical teams, and enterprise environments, and I always focus on clean architecture, performance, and long-term maintainability. If you are looking for a Microsoft ecosystem expert who can bridge desktop, cloud, and Microsoft 365 systems into a single integrated solution, I can help deliver reliable and scalable results.

I am a Web development expert with over 9 years experience in setup and customization of Asp.Net Websites and Zoho . Area of Specialization: 1) Asp.Net MVC,C# 2) AngularJS 2/4/5 3) NodeJs 4) Javascript,HTML5,CSS 5) 3-Tier Application 6) CMS and CRM like Salesforce,Zoho,NopCommerce,Kentico,DNN,BigCommerce, 7) Bug fixing , Testing, Deployment,Azure Hosting 8) WebRtc,Kurrento Media Server,Audio conferencing 9) Plugin development ,firefox Extension,Chromium,Chrome extension,chromium I have other areas of working as well . Why you would hire me: -Quality work -Proficient communication -Code Standards -Expert level testing -Time Value Till date, I have created over 80 websites, most of which required custom designed plugins, extensions, and themes. My aim has always been to produce websites that look beautiful and professional, are highly functional, load quickly, and are Search Engine optimized. If this is what you want, then get in touch with me. Thanks

25 years experience with 3 Microsoft certifications in Asp.net, C# and SQL. Full-stack Web and Mobile Developer - Developed 14 MVPs to date. Expert in .Net/C#, Blazor, Angular, React, Python and SQL

Gold Medalist in BS (Software Development) | 18+ Years of Software Development & Team Lead Experience I am a seasoned Full Stack Developer, Solution & Software Architect with a strong track record of delivering scalable, high-performance, and enterprise-grade applications. I bring deep technical expertise across the full development lifecycle — from architecture design to deployment — now enhanced with modern AI and LLM integration capabilities. What I Do - ASP.NET Standard Full Stack Developer (WebForms, MVC, WebAPI, WCF) - ASP.NET Core Full Stack Developer (Blazor, Razor Pages, MVC, WebAPI) - Desktop Application Developer (Windows Forms) - Windows Service Developer - NodeJS Full Stack Developer (Web Apps, APIs) - MEAN | MERN | MEVN Stack Developer - DevOps Engineer | Azure DevOps Expert - Clean code | Standards-driven | Complexity handled with confidence - Lightweight, complex and performance-based application development - API and third-party services integration - Application & Database design | Software architecture - Solution Architect | Software Architect Skills & Expertise Frontend Development - JavaScript | ES5 | ES6 | ECMAScript | TypeScript - jQuery | AJAX - JSON | XML | YAML - HTML5 | CSS3 | Bootstrap - React.js | React Hooks - Vue.js | Vue 3 - Quasar Framework - Vuetify - AngularJS | Angular 2+ - Responsive Web Design Backend Development - Node.js | Express.js - REST APIs | RESTful Services - Microservices Architecture - Authentication & Authorization (JWT, OAuth) - API Integration - Third-Party API Integration - Real-Time Applications Database Technologies - MS SQL Server | MySQL | MongoDB - Redis - NoSQL | RDBMS - Database Design & Optimization - Caching Strategies .NET Development - C# | VB.NET - ASP.NET MVC | ASP.NET Core - ASP.NET Core Web API - Entity Framework (Code First, Database First, Model First) - LINQ | Lambda Expressions - Attributes & Reflection - Delegates & Events - Dependency Injection (DI) | Inversion of Control (IoC) Software Architecture & Design - OOP | SOLID Principles - GoF Design Patterns - SOA | ROA | Microservices - Clean Architecture - Scalable System Design - Software Architecture Cloud & DevOps - Microsoft Azure - Docker | Docker Compose | Docker Swarm - Kubernetes | Container Orchestration - Jenkins - Git | GitHub | GitLab | Bitbucket - CI/CD Pipelines - Ansible | Puppet Messaging, Communication & Automation - RabbitMQ | MSMQ - Twilio - Infobip - SendGrid - PushSharp - SMS & Email API Integration - Webhooks - Queue Processing - Selenium Automation Testing AI & Modern Development - AI Integration - LLM Integration - OpenAI API - AI-Powered Applications Additional Skills - Swagger / OpenAPI - Background Jobs - Agile Development - Version Control - Cross-Platform Development

Hey! Building scalable SaaS platforms and enterprise-grade applications requires more than just writing code, it requires clean architecture, long-term maintainability, and systems designed to scale reliably as your business grows. I am a versatile .NET developer and I help startups and enterprises develop robust cloud-based applications using .NET, ASP.NET Core, Azure, ABPIO, React, and Angular, with a strong focus on performance, scalability, and maintainable backend systems. With 10+ years of experience in full stack development, I have designed production-ready architectures for business platforms, workflow systems, and SaaS products. My approach is focused on building systems that remain stable, secure, and scalable long after the initial launch. ✔ 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 .NET / ASP.NET Core / C# ABPIO Framework REST APIs & Backend Systems Microservices Architecture Azure Functions Enterprise Software Development SaaS Solutions Development Clean Architecture & Domain-Driven Design (DDD) ✔ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 React.js Angular Blazor, Razor in frontend TypeScript & JavaScript Responsive business applications & dashboards ✔ 𝐂𝐥𝐨𝐮𝐝 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 Microsoft Azure Azure App Services & Azure SQL Cloud-based deployments Azure Blob Storage & Data Lake CI/CD pipelines Performance optimization & scalable infrastructure ✔ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 & 𝐃𝐚𝐭𝐚 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 SQL Server PostgreSQL Entity Framework Core Database architecture & optimization ✔ 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 𝐈 𝐁𝐮𝐢𝐥𝐝 Multi-tenant SaaS platforms Scalable MVPs Enterprise business applications Workflow management systems Dashboard & reporting platforms Legacy system modernization API platforms & integrations ✔ 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈’𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡 Healthcare, Fintech, Insurance, Logistics, Supply Chain, Real Estate, E-commerce, EdTech, HR Tech, Manufacturing, Travel, and Enterprise Operations Systems. 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: [ Full Stack Developer, Senior .NET Developer, ASP.NET Core, C# Developer, .NET Core, ABP Framework, SaaS Development, Web Application Development, API Development, REST API, Microservices Architecture, React Developer, Angular Developer, JavaScript, TypeScript, Blazor, Blazor WebAssembly, Entity Framework Core, SQL Server, PostgreSQL, Database Design, API Integration, Cloud Development, Microsoft Azure, AWS, Docker, Kubernetes, CI/CD Pipelines, DevOps, Legacy System Modernization, Enterprise Applications, Scalable Web Applications, Multi-Tenant SaaS, Domain Driven Design, Clean Architecture, Performance Optimization ] 💬 Let’s Work Together Need someone who can diagnose issues quickly, modernize your application, or redesign your website/web app without disrupting your business? I’m available for both short-term fixes and long-term ongoing support. Thanks!