Senior Full-Stack .NET Web Developer with 8+ years of experience in C#, ASP.NET Core, .NET 6/8, MVC, Blazor, React, Angular, SQL Server, and Azure. I build enterprise web applications, SaaS platforms, REST APIs, and microservices — with 68+ projects delivered on Upwork and consistent 5-star client feedback. CORE EXPERTISE: ✅ Backend Development — C#, ASP.NET Core, .NET 6/8, MVC, Blazor, REST APIs, Microservices architecture ✅ Frontend Development — React, Angular, JavaScript, HTML5, CSS3, Bootstrap (responsive, modern UI) ✅ Database & Data Access — SQL Server, Entity Framework Core, Dapper (query optimization, performance tuning) ✅ Cloud & DevOps — Microsoft Azure, AWS (deployment, hosting, CI/CD, legacy .NET modernization) ✅ AI Integration — OpenAI API, Copilot Studio, Agentic AI (chatbots, automation, AI-powered features inside .NET web applications) ✅ Team Leadership & Client Communication — I lead a development team, so I scale from quick fixes to full product builds, with clear updates at every milestone WHY CLIENTS HIRE ME: Clients endorse me most often as "Committed to Quality" (27x), "Collaborative" (18x), and a "Clear Communicator" (15x). I deliver clean architecture, honest timelines, and software that's maintainable long after launch. Message me with a short description of your project I'll reply within minutes with an honest assessment of scope, timeline, and approach.

Full Stack Developer | ASP.NET Core · Azure and Javascript Expert | 8 years building production SaaS and FinTech platforms. My recent projects are: → eventio: AI-powered event management (.NET 8, React, Next.js, Azure OpenAI) → approvpay: FinTech SaaS with Stripe and QuickBooks (Angular, .NET Core, NgRx) → ruleonetoolbox: Real-time stock data platform (.NET 6, Angular, Azure Functions) → findd: Payroll and time-attendance SaaS (.NET Core, React, ServiceNow, MongoDB) What I build: .NET Backend & REST API Development ASP.NET Core Web APIs and Microservices using Clean Architecture, CQRS, and MediatR. Entity Framework Core, SQL Server, PostgreSQL, and MongoDB. Tested with xUnit and TDD — not added at the end. Full-Stack SaaS Development End-to-end platforms with React, Angular, Next.js, and TypeScript frontends connected to .NET backends. NgRx and Redux for state. Production-ready, not just demo-ready. Azure Cloud & DevOps Azure App Services, Functions, Key Vault, Service Bus, and Azure AD. CI/CD with Azure DevOps and GitHub Actions. Docker containerisation from day one. AI Integration Azure OpenAI and OpenAI API wired into live .NET applications — already shipped, not proof-of-concept. Third-Party Integrations Stripe, QuickBooks, SAP, ServiceNow, and Azure AD. Complex integrations handled end-to-end. Testing & Code Quality TDD, xUnit, Selenium, and integration testing baked into the process — not added at the end when it's already broken. Stack: Backend: C# · ASP.NET Core · .NET 8 · SignalR · Microservices · CQRS · MediatR · Clean Architecture Frontend: React · Angular · Next.js · TypeScript · NgRx · Redux Databases: SQL Server · PostgreSQL · MongoDB · CosmosDB · Entity Framework Core · Dapper Cloud & DevOps: Azure · Docker · CI/CD · Azure OpenAI · Azure DevOps · GitHub Actions Integrations: Stripe · QuickBooks · SAP · ServiceNow · Azure AD If you're building a .NET SaaS platform, FinTech product, or AI-integrated web application — send me the brief.

* Over 15 years of hands-on experience in leading a team of software developers. * Extensive experience in developing mobile, desktop, web, blockchain, IoT, and corporate solutions. * Expert knowledge of Object-Oriented Programming. * Expert knowledge in cross-platform software development for mobile (Android, iOS, WebOS, Tizen) and desktop operating systems (Windows, Linux, macOS) using C++ with wxWidgets, and C# with Xamarin. * Proven experience in successfully managing Blockchain startups. * 20 years of experience in software development. * wxWidgets Technology Evangelist in Eastern Europe.

I am a C# .NET developer specialized in Windows desktop applications, POS systems, ERP solutions, and full stack .NET development. Most of my work revolves around building high-performance Windows applications using WPF, WinForms, and .NET Framework, combined with strong backend development using ASP. NET, ASP. NET Core, and REST APIs. I focus on building reliable, scalable, and production-ready software for business-critical systems like POS, ERP, CRM, kiosk applications, and hardware-integrated platforms. My core stack includes C#, .NET Framework, .NET Core, ASP .NET, ASP .NET MVC, Windows App Development, Desktop Application Development, API Integration, RESTful API, SQL, Microsoft SQL Server, PostgreSQL, WPF, WinForms, Windows Services, and Standalone Applications. I build both UI-heavy Windows applications and backend-driven integration systems. I have extensive experience in POS systems including POS terminals, POS software, payment gateway integration, inventory management, order management, and ERP software integration. I work with Point of Sale & Payment Systems, API-based POS sync services, Android POS utilities, kiosk mode applications, offline-first POS applications, and hardware integrations such as printers, cameras, barcode scanners, USB devices, Bluetooth devices, and COM port communication. On the backend side, I design APIs using RESTful architecture, build microservices, and develop secure API integration layers between ERP, CRM, POS, and SaaS platforms. I work with JSON, authentication, JWT, OAuth, logging, error handling, offline synchronization, and real-time integrations. My systems are designed to be cloud-ready and scalable using Azure, CI/CD pipelines, and containerized deployments when required. For Windows desktop development, I build professional WPF and WinForms applications including kiosk platforms, shell replacement systems, device control utilities, screen recording software, clipboard tools, document automation, trading applications, charting platforms, and reporting tools. I follow clean architecture and MVVM for WPF projects and deliver stable EXE builds with application installers. I also build hybrid systems using WebView2, Blazor, and React to connect desktop applications with modern web platforms. This allows POS back offices, admin panels, dashboards, and reporting systems to be built as full-stack products using .NET and modern frontend frameworks. Databases are a major part of my work. I design schemas, write optimized queries, stored procedures, and integration layers using Microsoft SQL Server, PostgreSQL, SQLite, MongoDB, and structured reporting systems like SSRS. I build reporting dashboards, financial reports, inventory analytics, and trading reports. I work on enterprise-level products such as ERP systems, CRM platforms, POS infrastructure, SaaS applications, microservice architectures, and financial platforms. I also build AI-powered features including LLM integration, AI model integration, Python execution inside .NET, analytics insights generation, and automation workflows.

I’m a .NET Developer with 6+ years of experience in creating high-quality Windows and web apps. Key Skills: ASP.NET Core (5-8), MVC, Web Forms WPF, Windows Forms HTML5, CSS3, Bootstrap, JavaScript, jQuery API Integration, Kendo UI, Telerik I focus on performance tuning and optimizing database queries. With solid expertise in client-side technologies and frameworks like WPF, MVVM, and XAML, I’m committed to delivering efficient, scalable solutions. Clear communication is my priority. I ensure clients are always updated on progress. Let’s connect to discuss how I can help your next project!

I am a 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 .𝐍𝐄𝐓 & 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞 & 𝐀𝐧𝐠𝐮𝐥𝐚𝐫 Developer with 8+ years of experience building enterprise-grade web applications, REST APIs, and workflow automation systems using Microsoft technologies. I specialize in end-to-end solutions using 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞, 𝐂# 𝐚𝐧𝐝 𝐀𝐧𝐠𝐮𝐥𝐚𝐫— delivering robust backends paired with dynamic, responsive frontends. I also extend these with 𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭 𝐏𝐨𝐰𝐞𝐫 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 (𝐏𝐨𝐰𝐞𝐫 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐞, 𝐏𝐨𝐰𝐞𝐫 𝐀𝐩𝐩𝐬, 𝐏𝐨𝐰𝐞𝐫 𝐁𝐈) to automate business processes and create complete digital transformation for organizations of all sizes. 𝗪𝗵𝗲𝗿𝗲 𝗜 𝗰𝗿𝗲𝗮𝘁𝗲 𝘁𝗵𝗲 𝗺𝗼𝘀𝘁 𝘃𝗮𝗹𝘂𝗲: 🏥 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 & 𝗟𝗶𝗳𝗲 𝗦𝗰𝗶𝗲𝗻𝗰𝗲 — Clinical trial & sample-tracking apps, patient/provider portals, staffing platforms, FHIR API integration, and HIPAA-conscious architecture. (Certified in Healthcare Interoperability & FHIR + HIPAA Compliance.) ⚙️ 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 .𝗡𝗘𝗧 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 — ASP.NET Core, C#, Web API / REST, Blazor, Entity Framework Core, Clean & Microservices architecture, paired with Angular (RxJS, NgRx, Material) front-ends. 🔄 𝗣𝗼𝘄𝗲𝗿 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 — Power Apps (Canvas & Model-Driven), Power Automate approval/notification workflows, Power BI dashboards, SharePoint, and Dataverse — to eliminate manual work and connect your Microsoft 365 stack. ☁️ 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆 — Azure Functions, Logic Apps, Azure DevOps CI/CD, and AWS — deployed cleanly and built to scale. 𝗔 𝗳𝗲𝘄 𝗼𝘂𝘁𝗰𝗼𝗺𝗲𝘀: • Built and scaled a HealthTech platform over a 2,300+ hour engagement ($25K+ contract) with a 5-star result. • Delivered a Power Apps portal for clinical research & biospecimen tracking. • Led full-stack delivery on multi-month enterprise builds with 1,000+ hour, 100%-satisfaction contracts. 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗸𝗲𝗲𝗽 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗺𝗲: ✔ End-to-end ownership — Angular front-end, ASP.NET Core back-end, Azure deployment, all from one person. ✔ Clean, maintainable code with proper architecture — not just "it works today." ✔ Deep Microsoft-ecosystem expertise across .NET and Power Platform (most developers do one, not both). ✔ Clear communication, honest timelines, and reliable long-term support. If you need a developer who understands both the code and the compliance — someone who can build the app and automate the process around it — let's talk. Send me a message with a bit about your project and I'll tell you honestly how I'd approach it. 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: C#, ASP.NET Core, ASP.NET MVC, .NET, .NET Core, .NET 8, Blazor, VB.NET, Web API, REST API, Entity Framework Core, Dapper, LINQ, SignalR, gRPC, TypeScript, JavaScript, jQuery 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀: Angular, RxJS, NgRx, Angular Material, Bootstrap, Tailwind CSS, .NET MAUI, Xamarin, Razor Pages 𝗖𝗹𝗼𝘂𝗱: Microsoft Azure, Azure Functions, Azure Logic Apps, Azure DevOps, Azure App Service, Azure SQL, Azure Storage, CI/CD Pipelines, AWS, EC2, S3, RDS 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: SQL Server, T-SQL, MySQL, PostgreSQL, MongoDB, Dataverse, Cosmos DB, Database Design, Query Optimization 𝗣𝗼𝘄𝗲𝗿 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺: Power Apps, Canvas Apps, Model-Driven Apps, Power Automate, Power BI, Power Fx, SharePoint, SharePoint Online, Microsoft 365, Copilot Studio, Dynamics 365 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲: Clean Architecture, Microservices, Domain-Driven Design, MVC, MVVM, SOLID, Design Patterns, System Design, Scalable Architecture, API Design 𝗔𝗜: Azure OpenAI, Microsoft 365 Copilot, AI Integration, LLM Integration, RAG, AI-Assisted Development, GitHub Copilot 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀: Healthcare Software, HealthTech, Life Sciences, Clinical Trials, EHR/EMR, FHIR, HIPAA Compliance, HL7, Telehealth, Fintech, B2B Portals, EdTech, E-Learning, Enterprise Software 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀/𝗦𝗸𝗶𝗹𝗹𝘀: Digital Transformation, Workflow Automation, Business Process Automation, Requirements Gathering, Agile/Scrum, Full-Stack Development, Web Application Development, Legacy Modernization, Third-Party API Integration, Payment Integration (Stripe/PayPal), Twilio, Technical Consulting, Solution Architecture

Are you looking for a developer who understands both business logic and scalable architecture — not just someone who writes code? I help startups and growing businesses design and build secure, high-performance web, SaaS, and desktop applications that are built to scale. With over 10 years of full-stack development experience, I specialize in combining modern front-end technologies with powerful backend systems to deliver complete, production-ready solutions. Here’s what I can do for your project: Front End (Modern & Responsive UI): ✔ Angular (2+), TypeScript, RxJS ✔ Angular Material, Bootstrap ✔ Clean, responsive, user-friendly interfaces ✔ Performance-optimized SPA applications Back-End Development (Secure & Scalable APIs) ✔ ASP.NET Core, .NET 6/7/8, C#, Web API ✔ Python (Django/FastAPI) ✔ Node.js (Express/NestJS) ✔ RESTful API development ✔ Authentication & Authorization (JWT, Role-based access) Desktop Applications ✔ WPF & WinForms ✔ Modernization of legacy desktop apps ✔ Business automation systems Databases & Integrations ✔ SQL Server, MySQL ✔ Entity Framework Core ✔ Payment Integrations (Stripe) ✔ Accounting Integrations (QuickBooks Online) ✔ Third-party APIs I have successfully delivered projects across healthcare platforms, Financial & accounting systems, HR & payroll platforms, E-commerce applications, and Enterprise SaaS products. Why Clients Hire Me: ✔ 10+ years of real-world development experience ✔ Strong architecture & problem-solving mindset ✔ Clean, maintainable, and scalable code ✔ Clear communication & regular updates ✔ Reliable delivery on time and within scop I work closely with clients to understand their goals, communicate clearly, and ensure projects are delivered on time, within budget, and beyond expectations. Let's bring your 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 to life! 𝐈𝐍𝐕𝐈𝐓𝐄 OR 𝐌𝐄𝐒𝐒𝐀𝐆𝐄 𝐦𝐞, and We can discuss your 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐫𝐞𝐪𝐮𝐢𝐫𝐞𝐦𝐞𝐧𝐭𝐬 and move forward 𝐚𝐜𝐜𝐨𝐫𝐝𝐢𝐧𝐠𝐥𝐲.

I am a Senior .NET/C# and AI Engineer with 7+ years of experience building reliable, scalable, and production-ready solutions. I specialize in developing Windows and web-based applications using ASP.NET Core, MVC, Web Forms, WPF, Windows Forms, and modern UI frameworks like Kendo UI, Telerik, Bootstrap, and jQuery. I am equally strong in backend logic, API development, SQL optimization, and performance tuning. Alongside full-stack .NET development, I build advanced AI systems using Computer Vision, Large Language Models (LLMs), and Document AI. I help businesses automate workflows, analyze images and video, extract insights from documents, and integrate AI into existing products. I deliver clean code, strong communication, and end-to-end ownership from understanding the requirement to deployment in cloud environments. If you need a developer who can deliver high-quality .NET applications and intelligent AI-driven solutions, I’d be happy to work with you.

If your .NET system is slow, unstable, hard to maintain, or blocking business growth - I fix that. I help businesses rescue, modernize, and scale legacy .NET applications without disrupting ongoing operations. Most of my clients reach out when: - Their legacy system is crashing, slow, or insecure - Developers left and nobody understands the code - Compliance audits (HIPAA / PCI-DSS) are failing - The system can’t scale with users or business demand - They want to modernize without a risky full rewrite With 8+ years of experience, I’ve helped companies in Healthcare, FinTech, ERP, POS, and HRMS turn fragile legacy systems into secure, cloud-ready platforms used by thousands of users daily. ✅ What I Can Do for You - Stabilize and refactor legacy .NET / ASP .NET applications - Modernize WebForms or MVC apps into clean, scalable architectures - Migrate systems to .NET Core / .NET 6–8 and Azure - Fix performance bottlenecks and security vulnerabilities - Design compliance-ready systems (HIPAA, PCI-DSS, HL7/FHIR) - Build new systems the right way using Clean Architecture 💡 How I Work (and Why Clients Keep Me) - Clarity first - I break complex systems into simple, business-friendly plans - No surprises - Milestone-based delivery with clear progress visibility - Production-ready quality - Clean, maintainable, documented code - Post-delivery support - Free bug fixes for 1 week after delivery - Partner mindset - I challenge bad decisions and suggest better solutions 🛠 Core Tech Backend: C#, .NET Core 6/7/8, ASP .NET MVC, Web API Frontend: Angular, Blazor, Razor, WebForms, React Cloud: Azure, Azure Functions, Docker, Kubernetes Architecture: Clean Architecture (CQRS + DDD), Microservices Security: JWT, OAuth2, HIPAA, PCI-DSS Databases: SQL Server, PostgreSQL, Cosmos DB 📩 Not Sure Where to Start? Send me: - A short description of your system - What’s currently broken or limiting growth I’ll analyze your setup and provide a clear solution roadmap free of cost, even if we don’t end up working together. 👉 Click “Invite to Job” and let’s fix this properly.

Senior Software Engineer | AI Integration & LLM Systems | AI Video Pipelines | Full-Stack & Technical Consulting I build things most developers can't — from production AI agents and LLM pipelines to real-time video processing infrastructure, WebRTC systems, and full-stack web applications. With 22+ years of hands-on engineering experience, I operate across the full stack of abstraction: from x86/ARM assembler up to React/Next.js, and everything in between — including the cutting edge of applied AI. Where I add the most value: AI Integration & LLM Systems — My current primary focus, and one of the fastest-growing needs on the market. I design and build practical AI systems that go beyond API wrappers: autonomous code agents, voice recognition pipelines, LLM integrations using LlamaCpp and HuggingFace, Retrieval-Augmented Generation (RAG) architectures, and reinforcement learning feedback loops. If you have an existing product and need AI capabilities embedded into it properly — not bolted on — this is where I thrive. AI-Powered Video Pipelines — A rare combination: deep AI knowledge paired with deep video engineering expertise. I build the infrastructure behind AI video tools — real-time processing, generation pipelines, and streaming architectures using FFmpeg (API and CLI), Media Foundation, and custom SDKs. Whether you're building an AI video editor, a live AI-enhanced stream, or a 250–360° panoramic solution, I can own the full pipeline from capture to output. WebRTC & Real-Time AI — Real-time communication systems enhanced with AI capabilities: live transcription, translation, moderation, and analysis. Proficient in WebRTC end-to-end, with the AI layer built in from the ground up rather than patched in afterward. AI Chatbot & Agent Development — Building production-grade conversational agents and autonomous systems with custom backends, memory, tool use, and real integrations — not no-code wrappers or off-the-shelf demos. Technical Leadership & Team Consulting — Sometimes the most valuable thing a project needs isn't more code — it's the right direction. I help clients assess their engineering teams, audit existing codebases, and evaluate software stacks and architectures before committing to a costly build. Whether you're choosing between competing technology approaches, need an independent expert to validate a technical decision, or require a fractional technical lead — I can step in as a trusted advisor. I also form and coordinate small teams of specialists when a project scope requires it, matching the right engineers to the right problems. Low-Level & Systems Programming — Custom HTTP servers, Nginx modules, WebSocket implementations, eBPF, ICMP and raw IP protocols, OS kernel work, and hardware device drivers. This foundation is what allows me to optimize AI inference performance and video pipelines at a level most engineers simply can't reach. Cross-Platform Native Development — 12 years with OpenGL, plus Metal, Vulkan, and DirectX across macOS, iOS, Windows, and Linux. Experienced with Raspberry Pi and embedded/specialized devices. Web & Full-Stack — 15 years of JavaScript (React, Next.js, TypeScript, Node.js, Three.js, WebGL), 10 years of PHP (Laravel, CakePHP, MySQL), and Python/FastAPI for backend services. Additional languages & tools: C# / MSSQL, Java, Python, Qt/PyQt, Perl — all with 5+ years of production use. I'm equally comfortable building an AI agent from scratch, architecting a real-time video pipeline, advising a CTO on a critical technical decision, or assembling the right team to deliver a complex product. If your project sits at the intersection of AI and real engineering — not just prompting — let's talk.