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Senior .NET developer with 20,000+ hours on Upwork and 100+ successfully completed projects — consistently delivering high-quality, maintainable solutions on time. I build robust ASP.NET Core web applications and APIs, and I integrate AI tools natively into my development workflow: using Claude Code and Cursor for faster, smarter coding, Perplexity for technical research, and ChatGPT for rapid prototyping. This means you get the output of a senior developer with the speed of a modern AI-assisted pipeline. Whether you need a complex MVC application, a clean REST API, or a Sitefinity CMS build — I bring both deep expertise and cutting-edge tooling to every project. Official Sitefinity Solutions Developer — Certified

Are you looking for a reliable, Senior-Level .NET Backend Engineer to build scalable SaaS platforms, optimize complex high-load databases, and deliver clean, enterprise-grade APIs? With approximately 3.5 years of hands-on, professional experience, I specialize in architecting secure, high-performance backend systems for demanding sectors like Healthcare, iGaming, and FinTech. I don't just write code; I apply modern System Design and Clean Architecture principles to construct robust solutions that solve critical business challenges and drive operational growth. 🔥 HOW I BRING IMMEDIATE VALUE TO YOUR BUSINESS: • Enterprise-Grade Backend Architecture: I engineer highly scalable application modules utilizing C#, .NET 8/9, and ASP.NET Core. I have extensive experience designing robust authorization logic for complex systems (managing 50+ distinct user roles) and implementing SignalR for sub-second, real-time data synchronization. • Advanced Database & Query Optimization: Performance under heavy load is critical. I have a proven track record of refactoring complex database logic for high-load transactional systems. By refining MS SQL Server stored procedures and table-valued functions, I resolve locking issues and have reduced query execution times by up to 35%, ensuring zero-latency financial calculations. • Seamless API & Third-Party Integrations: I lead the end-to-end integration of vital APIs. This includes payment gateways, game providers, and seamless wallets, consistently translating complex client requirements into stable technical realities. • Distributed Systems & Background Processing: I decouple resource-intensive tasks from core logic using Hangfire and Azure Functions, significantly improving overall system stability. Furthermore, I implement distributed caching layers with Redis, increasing data retrieval speeds by 40% and ensuring seamless system extensibility. • Cloud Infrastructure & DevOps Mastery: I guarantee high availability and 99.9% uptime by orchestrating microservices and deploying them across Azure and Kubernetes environments. I establish robust CI/CD pipelines via GitHub Actions to automate testing workflows and achieve a 99% deployment success rate. 🏆 FEATURED CASE STUDY: ENTERPRISE HEALTHCARE PLATFORM • Domain: Medical & Healthcare Systems • Tech Stack: .NET 9, C#, Angular, TypeScript, Azure Functions • My Role & Impact: I served as the core Full Stack Developer for a highly complex, secure, and large-scale medical application. I leveraged the bleeding-edge capabilities of .NET 9 to engineer a robust backend tailored for processing sensitive healthcare data. To optimize performance and ensure high availability, I architected and implemented critical background jobs using Azure Functions. On the frontend, I delivered a seamless, responsive, and intuitive user interface using Angular and TypeScript, bridging complex backend logic with an exceptional user experience. 💻 MY CORE TECHNOLOGY STACK & EXPERTISE: • Languages & Frameworks: C#, .NET 8 & 9, ASP.NET Core, Entity Framework (EF) Core, Angular, TypeScript, LINQ, REST API, GraphQL, SignalR. • Architecture & Design Patterns: Clean Architecture, Microservices, CQRS, SOLID principles, MediatR, FluentValidation. • Databases & Caching Solutions: MS SQL Server, PostgreSQL, Redis, SQLite. • Cloud, DevOps & Workflows: Azure (Functions, Blob Storage), Docker, Kubernetes, DigitalOcean, GitHub Actions, CI/CD. 🤝 WHAT TO EXPECT WHEN WORKING WITH ME: I operate with a product-owner mindset. By collaborating with me, you are guaranteed clean, easily maintainable code, flawless communication, cross-functional Agile/Scrum collaboration, and strict adherence to project deadlines. I treat your product and its success as my own. Let's discuss the technical challenges of your next project in detail. Click "Invite to Job" or shoot me a message, and let's explore how we can build something exceptional together!

With extensive experience in C# .NET, Node.js, React.js, and D3.js, I specialize in building scalable applications and dynamic data visualizations. My backend expertise in C# .NET enables me to develop robust, high-performance systems, while my deep knowledge of React.js and D3.js allows me to craft interactive, data-driven user interfaces. I am proficient in object-oriented programming, API development, cloud solutions, and performance optimization, ensuring that every project is efficient, secure, and maintainable. Key Skills & Expertise ✔ Front-End Development: React.js, Next.js, TypeScript, D3.js, modern UI frameworks ✔ Back-End & API Development: Node.js, C# .NET, ASP.NET, RESTful & GraphQL APIs ✔ Cloud & Security: AWS, HashiCorp Vault, authentication & authorization mechanisms ✔ Performance Optimization: Web load time improvements and smooth animations ✔ Data Visualization & UI/UX: Interactive dashboards and pixel-perfect designs ✔ Testing: Jest, Cypress, Unit Testing, End-to-End Testing, Test-Driven Development (TDD) I take a strategic, solution-oriented approach, writing clean, scalable, and maintainable code while delivering high-quality results on time. Whether optimizing an existing system, developing a robust API, or enhancing UI/UX, I am passionate about solving complex challenges and delivering innovative software solutions. Let’s connect to discuss how I can contribute to your project’s success! 🚀

I build data and AI platforms for audit and financial software. Currently a Senior Data Engineer at Wolters Kluwer (TeamMate), On the data side, I architected the Databricks backend end-to-end: PySpark pipelines over Delta Lake (bronze/silver/gold), 30+ audit analytics tests with journal-level risk scoring, incremental loads with Auto Loader, governance with Unity Catalog - all shipped through Terraform and Azure DevOps CI/CD. I moved key workloads to Databricks Serverless and instrumented the platform with Datadog. On the AI side, I built Trial Balance mapper : .NET 8 Azure Durable Functions service that maps trial-balance accounts to a standard Chart of Accounts. It combines deterministic scoring, semantic retrieval (ONNX BGE embeddings, Azure AI Search vector search), and Azure OpenAI for low-confidence cases only. Every suggestion ships with candidate evidence, rationale, and a confidence band - because in audit, explainability is not optional. What I bring: • 13+ years building analytics and AI products for audit and financial data —-including 11 years as primary developer of TeamMate Analytics (statistical audit tooling: Benford's law, regression, outlier analysis) • Deep Databricks/Spark engineering: lakehouse architecture, performance, cost control, IaC • Practical LLM engineering: retrieval, prompt optimization, confidence scoring, batching, caching • Domain fluency: general ledger, trial balance, journal-entry risk analytics, financial ratios

I’m a Senior Full-Stack .NET Developer with 10+ years of experience building enterprise web applications and distributed systems. I specialize in designing and developing solutions using .NET Core and modern JavaScript frameworks (Angular, React, Vue.js), with strong expertise in both relational and NoSQL databases (MS SQL Server, MongoDB, Firebase). My experience includes building microservices architectures, integrating complex third-party systems, and developing high-performance APIs. I’ve worked with messaging systems (Kafka, Azure Service Bus), real-time technologies (SignalR), and cloud platforms such as Microsoft Azure. I also have solid experience in enterprise development, including 4+ years working with SharePoint (2010–2016, Office 365), delivering internal portals and business process automation systems. I take ownership of solutions end-to-end — from architecture and development to deployment and optimization. I’m comfortable working in complex environments, collaborating with cross-functional teams, and driving technical decisions. Core skills: • .NET Core, ASP.NET, Web API • Angular, React, Vue.js • MS SQL Server, MongoDB • Microservices, REST, gRPC • Kafka, Azure Service Bus, Redis • SharePoint/Office 365

Highly motivated Sr. Software Developer with more than 15 years of experience in desktop, web and mobile software design and development. Strong technical, analytical and problem solving skills. Languages: C++, Java, C#, VB.NET, JavaScript, HTML, SQL, OQL, Verilog Technologies: ASP.NET WebForms/MVC, WinForms. WPF, MVVM, Unity, Prism, WinRT, WP8, LINQ, WCF, DevExpress, Spring(Java), Maven(Java), Gradle(Java) DB Engines: MS SQL, MySQL, Oracle SQL, SQLLite, FastObject, xDB