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I am a software developer with 13+ years of experience in building high-performance, cross-platform desktop applications using Qt/C++ and PyQt. I specialize in desktop software for video streaming, computer vision, and AI-powered solutions, delivering efficient, scalable, and user-friendly applications for Windows, Linux, and macOS. My expertise includes: Desktop Application Development: Qt, PyQt, cross-platform UI/UX, backend logic, networking Computer Vision & AI: OpenCV, TensorFlow, Keras, real-time object detection, face recognition Video Streaming & Processing: FFMPEG, OpenRTSP, live camera streaming, playback, recording WebRTC & Web Integration: Real-time audio/video apps, chat, and web interfaces Database & Backend: MySQL, PHP, server-side scripting, automation I focus on delivering high-quality solutions that solve real-world problems, optimize performance, and provide seamless user experiences. I am available for short-term projects, long-term contracts, and ongoing support.

Available to start immediately. I build and fix real .NET & C# software. Click on Invite button to start conversation I’m a .NET Developer and C# Developer with 13+ years of experience working on production systems built in C#/.NET. Most of my work is focused on helping teams make their existing software more stable, scalable, and easier to evolve without risky rewrites. I’ve worked in long-term roles as a C#/.NET developer, often joining projects where the codebase already exists and needs structure, performance improvements, or careful modernization. 🧠 How clients usually come to me Very often, teams reach out to me as a .NET developer when they already have a product written in C#/.NET, but something isn’t working as it should. Changes are slow, bugs appear in unexpected places, or the architecture feels fragile. In those cases, I step in as a C# .NET Developer who understands how real systems grow over time and how to improve them without breaking production. Depending on the scope, I work either as a backend developer focused on logic and performance, or as a .NET Full Stack Developer when both backend and UI decisions need to be handled together. ⚙️ What I do in real projects Day to day, my work as a .NET Developer is very practical. I write and refactor C#/.NET, clean up .NET architecture, improve async flows, and make sure the application behaves predictably in production. In many projects, this naturally turns into .NET full stack work handling backend services, APIs, and UI integration where I step in as a .NET Full Stack Developer. When teams want a modern .NET Full Stack direction without splitting the codebase, I build new features or full applications using .NET MAUI/WPF/WinForms. I’ve worked with .NET apps both for new products and for migrations from older stacks like, where stability matters more than speed. 🧩 Types of systems I’ve worked on Over the years, I’ve worked as a .NET Developer, across different environments: 💻 Desktop software written in C#/.NET 🌐 Web platforms where I worked as a full stack developer on .NET backends 📱 Cross-platform apps built with .NET MAUI (Windows & Android only) 🧱 Larger products that required a true full stack developer approach 🔗 Mixed systems where .NET AI integration was part of the stack 🎮 Internal tools and simulators developed with C# 🤖 Careful use of .NET AI where it actually added value In several projects, I worked in React .NET setups, connecting React frontends to .NET backends while keeping responsibilities clean and clear. 🛠️ How I work with teams and data I’m comfortable joining existing teams and reading unfamiliar C#/.NET codebases. I focus first on understanding why decisions were made, then improving things step by step. I regularly work with SQL server, collaborate with Azure Data Engineer roles, and support data-heavy systems where performance & reliability are critical. This mix of responsibilities often places me in a .NET Full Stack Developer role even when the original task starts as pure backend work. 🛠️ Tech Stack .NET Framework, .NET 6 / 8 / 9 / 10 App Development - WPF, WinForms, WinUI, Blazor, .NET MAUI, MVVM Concurrency & Performance - Multithreading, async/await, Task Parallel Library Hardware & Protocols - Serial, Bluetooth LE, TCP/IP, UDP, RS232, RS422 Architecture & Quality - Clean Architecture, OOP, refactoring, performance tuning Security & Testing - Unit testing, Polaris, Coverity, SAST, DAST, threat modeling Data & Cloud - SQL Server, Azure Tooling - Visual Studio, VS Code, GitHub, GitHub Actions, Docker ✅ Why clients choose to work with me ✨ I think like a long-term .NET Developer, not a short-term task runner ✨ I write C# code that other C# developers can actually maintain ✨ I’m comfortable owning systems as a .NET Full Stack Developer ✨ I communicate clearly and avoid surprises ✨ I leave .NET full stack codebases cleaner and more stable than I found them 📌 Availability ✅ Available now 🌍 Remote-only ⏱️ Open to long-term collaboration If you’re looking for a .NET Developer, who can step into an existing system and improve it safely let’s chat. 👉 Send a message and we’ll review your setup together.

I help individuals, startups, SMBs, and enterprises build reliable, scalable, and user-friendly .NET applications. With 12+ years of experience in custom software development, I specialize in transforming ideas into high-performing desktop, web, and mobile solutions that drive measurable business results. ➜ 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 𝐟𝐨𝐫 𝐘𝐨𝐮 You’ll get more than just coding support — I ensure your software is: • Reliable & Scalable → Built on robust .NET architecture. • User-Friendly → Clean UI/UX for smooth adoption. • Future-Proof → Modern technologies and maintainable code. • On-Time → Agile approach with frequent updates and demos. ➜ 𝐌𝐲 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 • Desktop Apps: WPF, WinUI 3, UWP • Mobile Apps: Xamarin, MAUI • Backend & Frameworks: .NET Core, .NET 5/6/8, .NET Framework (3.5+) • Architectures: MVVM, MVC, PRISM, Singleton, n-Tier, Dependency Injection • Databases: SQL Server, SQLite, MySQL, Oracle • Integrations: Google APIs, Social APIs (Facebook, Twitter, LinkedIn) • UI/Controls: DevExpress, SyncFusion, Telerik ➜ 𝐖𝐡𝐨 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 • Startups looking to launch MVPs • SMEs modernizing legacy systems • Enterprises needing robust desktop, web, or mobile apps • B2B & B2C businesses seeking tailored software solutions ➜ 𝐌𝐲 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 1. Understand your goals & requirements 2. Propose the most effective technical approach 3. Share similar past work & align expectations 4. Start with a pilot milestone (risk-free) 5. Provide regular updates, demos, and post-deployment support ➜ 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 • Top Rated Plus on Upwork with 100% Job Success Score • Client-Centric Approach: clear communication, flexible engagement • Confidentiality Assured: NDA & secure contracts • Proven Track Record: worked with startups and global enterprises • Easy Collaboration: available via Skype, Teams, Slack, Zoom I’m not just a developer—I’m a partner in your project’s success. My commitment to understanding your goals and providing ongoing support reflects my dedication to achieving the best outcomes for you. Let’s work together to create something extraordinary. Updating an existing app, or building something from the ground up — drop me a message, it is free to talk it over.

I am a Computer Engineer specializing in Cyber Security, AI/ML Automation, and Full-Stack Python Development. I bridge the gap between building cutting-edge software and keeping it highly secure against modern threats. Whether you need an automated AI agent, a secure web platform, or a deep vulnerability assessment, I deliver clean, optimized, and strictly tested solutions. What I bring to your project: 🛡️ Cybersecurity & Threat Protection Vulnerability Assessments & Penetration Testing Secure Authentication Systems & Data Privacy Cybersecurity Tool Development & Threat Intelligence 🤖 AI, ML & Automation AI Agent Development & LLM Integrations (Chatbots, RAG) Machine Learning Automation & Data Scraping Intelligent Data Processing & Workflow Automation 💻 Full-Stack & Software Development End-to-end Web & Desktop Applications (Python, Next.js, React) Robust Database Design & API Integrations Responsive Front-End Development & UX Optimization Why Choose Me? I have a proven track record of strictly adhering to complex technical guidelines and delivering high-quality code. Having successfully executed highly secure, isolated-environment projects for enterprise-level standards (including research studies and architecture testing), I understand the importance of strict compliance, zero-data leaks, and meeting tight deadlines. I am highly detail-oriented, a clear communicator, and accountable for outcomes. Let’s connect and discuss how I can add secure, intelligent value to your next project!

⭐⭐⭐⭐⭐ Top Rated | Senior .NET Desktop, ASP.NET Core, SQL Server, QuickBooks & SAP Crystal Reports Expert | 10+ Years I help businesses build, modernize, and optimize desktop applications, web systems, databases, and reporting solutions using Microsoft technologies. With over 10 years of experience, I've delivered enterprise software for manufacturers, wholesalers, accounting firms, and service businesses worldwide. I specialize in solving complex technical challenges—from fixing slow applications and optimizing SQL Server databases to integrating QuickBooks Desktop, developing SAP Business One Crystal Reports, and building complete ERP solutions. Whether you're starting a new project or maintaining a legacy system, I focus on clean architecture, performance, and long-term maintainability. 🔹 Core Expertise Desktop Development • C & VB.NET WinForms • DevExpress UI • Windows Services • Multi-threaded Applications • Modern Windows 11 UI • Desktop Performance Optimization Web Development • ASP.NET Core • RESTful Web APIs • Third-party API Integrations • OAuth Authentication • JSON & XML Processing Database Development • Microsoft SQL Server • T-SQL • Stored Procedures • Performance Tuning • Query Optimization • Index Optimization • Database Design • Data Migration • Import & Export Automation SAP Business One & Crystal Reports I have developed hundreds of Crystal Reports for SAP Business One, including: • Sales Orders • Purchase Orders • A/R & A/P Invoices • Delivery Notes • Inventory Reports • Production Reports • Financial Reports • Customer Statements • Aging Reports • Barcode Labels • Custom Business Reports I also specialize in: • PLD to Crystal Report Conversion • Crystal Report Customization • SQL-Based Reports • Report Optimization • Complex Formulas • Parameters & Subreports QuickBooks Desktop Integration • QBFC SDK • Customer Synchronization • Order Synchronization • Invoice Synchronization • Inventory Synchronization • Price Updates • Windows Background Services • Custom Accounting Integrations ERP & Business Automation • Inventory Management • ERP Development • Workflow Automation • Business Process Automation • Dashboard Development • Reporting Solutions Hardware Integration • Serial Port (RS232/RS485) • Bluetooth Communication • Industrial Equipment • Machine Automation • Real-time Monitoring Systems Legacy Modernization • VBA to .NET Migration • Excel Macro Conversion • Legacy Application Refactoring • Desktop Application Upgrades 🔹 Recent Projects ✔ Developed a complete ERP solution for the diamond industry handling high-volume daily transactions. ✔ Designed and developed hundreds of SAP Business One Crystal Reports and converted numerous PLD reports into Crystal Reports. ✔ Built an unattended QuickBooks Desktop synchronization application using the QBFC SDK to automatically synchronize customers, orders, invoices, inventory, and pricing. ✔ Developed a real-time manufacturing dashboard monitoring production across 15+ plants. ✔ Implemented a fully compliant Saudi Arabia ZATCA Phase 2 e-invoicing solution. ✔ Built coffee roaster control software integrating hardware through Serial Port and Bluetooth communication. ✔ Developed an automatic desktop application updater with database migration support. ✔ Migrated legacy Excel/VBA business systems into scalable .NET desktop applications. 🔹 Why Clients Hire Me ✔ 10+ years of professional experience ✔ Top Rated on Upwork ✔ Strong expertise across Desktop, Web, Database, Reporting, and Enterprise Integration ✔ Clean, maintainable, and scalable code ✔ Fast problem diagnosis and performance optimization ✔ Direct communication with the developer doing the work ✔ Reliable delivery and long-term support 🔹 Technologies Languages: C, VB.NET, SQL (T-SQL) Desktop: WinForms, DevExpress Web: ASP.NET Core, REST APIs Database: Microsoft SQL Server Reporting: SAP Business One, Crystal Reports, RDLC Accounting: QuickBooks Desktop (QBFC SDK) Other: REST APIs, JSON, XML, OAuth, Windows Services, Barcode Systems, Serial Communication, Bluetooth, VBA Modernization 📩 If you're looking for a developer who can build, optimize, or modernize your desktop application, SQL Server database, Crystal Reports, QuickBooks integration, or ERP system, I'd be happy to discuss your project. Send me a message, and let's build a reliable solution that scales with your business.

I’m a Full-Stack Developer specializing in AI-driven products—5+ years building and scaling software in React/Next.js + Node.js/NestJS + PostgreSQL/MongoDB/Redis + FastAPI/Django/Flask. My sweet spot is taking a messy business process and turning it into a clean UI + reliable APIs + AI automation that teams actually adopt. Beyond custom full-stack development, I have extensive experience building and customizing high-converting ecosystems using WordPress, WooCommerce, Shopify, Wix, PHP, Laravel, Duda, Framer, and Webflow. Combining this technical versatility with a strong eye for end-to-end UI/UX design, I ensure your platform is not just functional, but visually stunning and optimized for conversions. Over the last 5 years, I’ve delivered: AI features that do real work (assistant flows, intelligent search, workflow automation—built with guardrails, logging, and fallbacks) Healthcare systems & admin tooling with RBAC, audit-friendly patterns, secure data handling, and production-grade stability Dashboards & reporting systems (KPIs, filters, exports, scheduled reporting, query + performance tuning) Desktop applications integrated with backend services for internal operations teams What you’ll like working with me Clear scope → milestones → weekly demos Practical engineering choices (ship fast, don’t create tech debt) Strong focus on reliability: errors, retries, observability, performance If you need someone who can own UI + backend + AI layer end-to-end—and communicate clearly with founders and teams—let’s talk. Best regards, Gaurav