Hire the Best Paint.NET Specialists

I’m a Senior .NET Developer combined with a Business Analyst mindset, with 10+ years of experience delivering and rescuing business-critical systems. I don’t just develop features — I analyze business workflows, fix system bottlenecks, and deliver scalable solutions that actually improve operations. In addition, I bring strong UI/UX implementation skills, allowing me to turn designs into pixel-perfect, production-ready interfaces — ensuring both performance and user experience. 🏆 Top Rated Freelancer 🏆 100% Job Success Score 💰 $10,000+ Earned 🚀 What I Specialize In 🔹 ERP / CRM / Business Systems Development Design and build systems for Sales, HRM, Warehouse, Manufacturing, Fleet Management Translate business requirements into scalable technical solutions 🔹 Legacy System Modernization (.NET) Upgrade old systems (.NET MVC, WebForms) → .NET Core / Blazor Refactor messy codebases into maintainable architectures Improve system performance, stability, and scalability 🔹 System Performance Optimization Fix slow systems (database queries, API latency, UI rendering) Optimize SQL, backend logic, and frontend performance 🔹 Pixel-Perfect UI Development (Figma / Adobe → Code) Convert Figma / Adobe XD / Photoshop designs into responsive HTML/CSS Ensure pixel-perfect accuracy across devices and browsers Implement UI using Blazor, DevExpress, Telerik 🔹 Business Analysis + Technical Execution Analyze workflows and suggest better system design Reduce operational inefficiencies through smart automation 💡 Why Clients Hire Me I think like a business owner, not just a developer I can quickly understand complex legacy systems and take ownership I proactively identify risks, bottlenecks, and better approaches I communicate clearly and provide regular progress updates 🧠 Tech Stack Backend: C#, .NET Core, ASP.NET MVC, Web API, Entity Framework Frontend: Blazor, HTML, CSS, JavaScript, Bootstrap, jQuery UI Frameworks: DevExpress, Telerik (Kendo UI), Syncfusion Database & Data: SQL Server, PL/SQL, OLAP, MDX Other: Python, ETL, Power BI, Excel, .NET MAUI 🎯 Productized Services (Fixed Scope – High Value) 💼 ERP / CRM System Audit – from $200 - Review architecture, database, and workflows - Identify bottlenecks & risks - Provide actionable improvement plan ⚡ Fix Slow .NET System – from $300 - Analyze performance issues (SQL / API / UI) - Optimize response time and system stability - Deliver measurable improvements 🔧 Legacy System Upgrade (.NET MVC → .NET Core / Blazor) - Codebase assessment - Migration strategy - Step-by-step modernization plan 📊 Database & Query Optimization – from $150 - Analyze slow queries - Optimize indexes and execution plans - Improve overall system performance 📌 Best Fit Clients - Companies running old .NET systems with performance issues - Businesses needing ERP / HRM systems built or improved - Founders who want a developer that understands business, not just code 💬 Let’s Work Together If your system is slow, hard to maintain, or no longer fits your business — I can help you analyze, fix, and upgrade it efficiently.

1. Expertise & Experience AI Solutions Architect, Technical Leader, and Senior Full Stack Engineer with **17+ years of experience** delivering enterprise-grade software across desktop, web, cloud, and AI ecosystems. Proven track record of architecting scalable, secure, and business-driven solutions while leading cross-functional teams through the complete product lifecycle—from discovery and solution architecture to deployment and production support. Experienced in collaborating with global clients and executive stakeholders to drive digital transformation, modernize legacy platforms, and accelerate AI adoption. Strong expertise in Agile delivery, CI/CD, DevOps, engineering governance, technical mentoring, and cloud-native architecture with hands-on experience delivering **cloud-agnostic solutions across Microsoft Azure, Amazon Web Services (AWS), and Google Cloud Platform (GCP)**. 2. Technical Skillsets Specialized in **Generative AI, Agentic AI, and Enterprise Software Architecture**, with hands-on expertise in **Python, OpenAI, Azure OpenAI, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), AI Agents, LangChain, FastAPI, AI/ML, Prompt Engineering, n8n, Vapi, and intelligent workflow automation**. Strong Microsoft technology background including **C#, .NET, .NET Core, WPF, MVVM, MAUI, ASP.NET Core, Web API, Microservices, Azure, SQL Server, PostgreSQL, Git, Azure DevOps, CI/CD, GitHub Copilot, and Claude Code**. Experienced in designing secure, scalable, API-first, cloud-native applications deployable across Azure, AWS, and GCP. 3. Representative Projects Architected and delivered **AI-powered enterprise solutions** including Enterprise AI Copilots, RAG-based Knowledge Assistants, Multi-Agent AI platforms, Document Intelligence solutions, and Voice AI assistants that automate complex business workflows and enhance decision-making. Designed intelligent engineering assistants for industrial automation, enabling natural language interaction, configuration generation, and technical knowledge retrieval using LLMs. Successfully delivered multiple enterprise desktop, web, API, and microservices-based platforms integrated with cloud services, modern DevOps practices, and enterprise security standards. Passionate about building production-ready AI systems that combine Generative AI with robust software engineering to deliver measurable business value and long-term scalability.

I help businesses build, enhance, and modernize enterprise web applications using ASP.NET Core, C#, React, Next.js, Azure, and leading CMS platforms. I also integrate AI APIs into existing .NET applications to deliver intelligent features, automate workflows, and improve user experiences. With 8+ years of experience, I've delivered scalable, secure, and high-performance solutions for clients across the UK, US, and Europe. 💼 What I Can Help You With ✔ Full Stack Development (.NET, ASP.NET Core, React, Next.js) ✔ AI API Integration (OpenAI, Azure OpenAI, ChatGPT APIs, AI Automation) ✔ Umbraco, Sitefinity & Optimizely Development ✔ REST API Development & Third-Party Integrations ✔ Azure Cloud Deployment & Application Modernization ✔ Performance Optimization, Bug Fixing & Code Refactoring ✔ Responsive UI Development from Figma Designs 🚀 My Experience ✔ Building enterprise .NET applications and CMS solutions ✔ Integrating AI APIs into existing web applications ✔ Developing secure REST APIs using ASP.NET Core ✔ Building modern React & Next.js applications ✔ Azure App Services, SQL Server, Redis, and cloud deployments ✔ Optimizing application performance and resolving production issues 💡 Why Clients Choose Me ✔ Clean, scalable, and maintainable code ✔ Strong debugging and problem-solving skills ✔ Clear communication and on-time delivery ✔ Reliable long-term support ✔ Focus on performance, security, and best practices If you're looking for a reliable Full Stack .NET Developer who can build scalable applications, integrate AI APIs, or enhance your existing system, I'd be happy to discuss your project. 📩 Let's connect and build something great together.

Senior ASP.NET Core / .NET Full Stack Developer | C# | React | Blazor | Azure | OpenAI | AI Integration I'm a Senior .NET Developer with 7+ years of experience building enterprise web applications, SaaS platforms, REST APIs, and AI-powered solutions using ASP.NET Core, C#, React, Blazor, Azure, OpenAI, and Azure OpenAI. I'm Microsoft Certified (AZ-204 & AZ-900) and maintain a 100% Job Success Score on Upwork. I help businesses build new applications, modernize legacy .NET systems, integrate AI into existing products, and solve complex technical challenges. What I can help you with: ✅ ASP.NET Core (.NET 8/9) web application development ✅ Full Stack Development with React, Blazor & Angular ✅ REST API & Minimal API development ✅ AI Integration using OpenAI, Azure OpenAI & Claude AI ✅ AI Chatbots, Document Processing & Automation ✅ Azure Cloud Development & Deployment ✅ Entity Framework Core & SQL Server ✅ Performance Optimization & Bug Fixing ✅ Third-party API Integrations (Microsoft Graph, Stripe, Amazon SP-API) ✅ Authentication (JWT, OAuth 2.0, ASP.NET Identity) ✅ Legacy .NET Framework & Web Forms modernization Over the last 7+ years, I've delivered secure, scalable, and high-performance software for enterprise clients, government organizations, and international businesses. I write clean, maintainable code, communicate clearly throughout the project, and focus on delivering solutions that create real business value. My Technology Stack Backend: ASP.NET Core (.NET 8/9), C#, Web API, Minimal APIs, Entity Framework Core, SignalR, SQL Server, Clean Architecture, DDD Frontend: React, Blazor, Angular, TypeScript, JavaScript, HTML, CSS Cloud & AI: Microsoft Azure, Azure App Services, Azure Functions, Azure OpenAI, OpenAI API, Claude AI, Azure Bot Framework, Docker, Azure DevOps, CI/CD Integrations: Microsoft Graph, Stripe, Amazon SP-API, REST APIs, JWT Authentication, OAuth 2.0 Whether you need a new ASP.NET Core application, AI integration, API development, cloud deployment, or help fixing complex .NET issues, I can deliver a reliable, scalable solution with clear communication and realistic timelines. Let's discuss your project. Send me a message with your requirements, and I'll provide a practical technical approach, timeline, and transparent estimate.

I am an experienced Full-Stack Software Developer & Solution Architect with strong analytical and problem-solving skills, delivering scalable, secure, and high-performance applications across Web, Desktop, Mobile, Cloud, Blockchain, and AI-powered systems. I specialize in building real-time, data-intensive, and enterprise-grade solutions that solve complex business challenges. ✅ Core Technical Expertise ______________________________________________________________________ ⚙️ Backend / Server-Side Development C#, .NET Framework, .NET Core, ASP.NET MVC, Web API Node.js, Express.js Real-time systems using SignalR & WebSockets Microservices architecture, RESTful APIs, modular scalable systems 🗄️ Databases & Data Engineering SQL Server, MySQL, PostgreSQL MongoDB, NoSQL, distributed data systems Database optimization, performance tuning, stored procedures 🎨 Frontend Development JavaScript, TypeScript AngularJS, modern Angular, React (if applicable) jQuery, Bootstrap, Knockout.js HTML5, CSS3, SASS/SCSS, responsive UI, UX-focused development 📱 Mobile & Cross-Platform Development Android (Native) Xamarin, PhoneGap/Ionic ElectronJS for cross-platform desktop apps 🛠 Tools, Libraries & Integrations Syncfusion, PDFSharp, AngleSharp, HTML Agility Pack Payment gateways, 3rd-party integrations, automation tools Reporting, dashboards, multi-tenant systems ☁️ Cloud & DevOps (If you want, I can expand this section) Azure, AWS basics CI/CD pipelines (GitHub Actions, Bitbucket Pipelines, Azure DevOps) Docker, containerized deployments 🧠 AI, Automation & Blockchain AI/ML integrations, automation scripts, data processing pipelines Bot development, chatbots, workflow automation Ethereum blockchain development Smart contract development (Solidity, Truffle, Web3) 🔄 Project Management & Development Methodologies Agile, Scrum, Kanban TDD (Test-Driven Development), Clean Code, SOLID Principles Git, GitHub, GitLab, Bitbucket, SVN JIRA, Azure DevOps, Trello, Freedcamp, MS Team Foundation I follow a structured Software Development Life Cycle (SDLC) to ensure quality, reliability, and maintainability at every stage—from requirements and architecture to development, testing, deployment, and long-term support. 🌟 Why Clients Enjoy Working With Me ______________________________________________________________ Strong logical, analytical, and architectural thinking Transparent communication and proactive collaboration Flexible with budgets and project scopes Committed to meeting deadlines and exceeding expectations Focused on long-term client relationships and continuous improvement I’m a highly self-motivated professional who takes ownership of every project. My goal is to deliver solutions that are scalable, secure, user-friendly, and aligned with your business goals.

I'm a .NET architect with 13+ years building microservices and multi-tenant SaaS, and lately I've been building AI on top of them. I've shipped systems that handle over $18M in transactions and RAG assistants that run in production, not demos. I'm also CTO at Centangle Interactive, where I run a 50 person engineering team across 14+ projects. I only take a few contracts on Upwork, and I do the architecture work myself. You won't get handed to a junior. Some of what I've built: A multi-tenant SaaS platform for refinery operations. I scaled it out of a monolith into 8 microservices with 200+ endpoints and 150+ database tables, using RabbitMQ and MassTransit for events, Ocelot as the gateway, and OpenIddict for identity with a custom role resolution system. It tracks budgets on projects worth millions. A financial ERP running across 90+ branches and 20+ organisations, processing more than $18M in deposits and withdrawals. It's offline first, syncs across branches, and consolidates reporting for the whole network. An AI assistant that's live on Google Play. RAG with vector search, HyDE query expansion, ingestion for PDFs, images and audio, streaming chat over SSE, and routing across multiple LLM providers. A natural language to SQL engine that turns plain English questions into tenant-scoped queries. Every generated query gets security filters injected automatically, so a user can never read another tenant's data. It has semantic caching and supports more than one LLM provider. A mentorship platform for the British Council, where I was lead architect. Microservices, Zoom integration, real time chat, GDPR compliance. I'm probably a good fit if you have a .NET monolith you want broken into microservices without a rewrite from scratch, a multi-tenant SaaS with permissions or data isolation problems, or a system where correctness matters because money moves through it. I'm also a good fit if you want AI built properly into a real product: a RAG assistant over your own documents, a chatbot that answers questions from your database in plain English, or an LLM pipeline that has to handle multi-tenant security and real users rather than a demo. And if your problem is the data itself, slow queries, a schema that's fighting you, or reporting that has to stay correct across dozens of locations, that's the same work to me. Tools I work in: ASP.NET Core 8, C#, microservices, RabbitMQ, MassTransit, Ocelot, OpenIddict, IdentityServer, EF Core, SQL Server, Docker, Clean Architecture, CQRS, DDD, React, React Native, Python, FastAPI, OpenAI, Claude, Gemini, RAG, vector search, n8n. Tell me what's breaking or what you're trying to build, and I'll tell you honestly whether I'm the right person for it.