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I am a Senior Full Stack Developer specializing in the analysis, design, and delivery of scalable, high-performance software. With a deep foundation in Object-Oriented Programming (OOP), system design, and cutting-edge artificial intelligence, I bridge the gap between complex backend logic, cloud-native infrastructure, and intuitive frontend experiences. Core Expertise - AI & Intelligent Systems: Hands-on experience in LLM development, fine-tuning, and embedding vector-based search workflows to build context-aware systems. Expert in architecting autonomous AI Agents capable of tool use, multi-step reasoning, and seamless integration into enterprise backend pipelines. - AI-Driven Development: Proactive in leveraging advanced AI tools and LLM pair-programming methodologies to accelerate the entire software development lifecycle, automate repetitive tasks, and optimize code quality. - Microservices & Architecture: Expert in decomposing complex monoliths into resilient, event-driven Microservices and implementing Micro Frontend architectures to enable decoupled scaling and independent deployment cycles. - Backend Engineering: High proficiency in building robust, low-latency APIs and distributed systems using Node.js, Python, C#, and C++. - Frontend Excellence: Extensive experience in designing responsive, modular UIs with React, Angular, and VanillaJS, focusing on layout precision and fluid user experiences. - Cloud & DevOps: Proven track record in cloud-native development across both AWS and Azure ecosystems, leveraging container orchestration, serverless functions, and CI/CD pipelines to automate infrastructure delivery. - Quality & Practices: Passionate advocate for Test-Driven Development (TDD), clean code principles, and the strategic application of Design Patterns to ensure highly maintainable, stable codebases.

**🚀 Elite .NET Developer | 8+ Years Building Scalable Solutions | Top-Rated with 100% Success Rate** **ASP.NET CORE | WEB API | C# | MICROSERVICES | DOCKER | BLAZOR | MAUI | SQL SERVER | AZURE | ANGULAR** Looking for someone who doesn’t just code, but thinks through problems and delivers solutions that actually work? You’ve found the right developer. 📊 Track Record That Speaks: 🏅 TOP-RATED PLUS 🏆 100% Job Success Rate ⭐ 5-Star Client Reviews 💰 $100k+ Platform Earnings 🔥 40+ Successful Projects ⚡ 4k+ Upwork Hours 🎯 Zero Failed Deliveries 🛠️ Core Tech Stack: Backend: .NET 9, ASP.NET Core 8, C#, Web API, Microservices Frontend: Blazor (Server/WASM), Angular 17, JavaScript/TypeScript, Html5, CSS3, Jquery Database: SQL Server, PostgreSQL, MongoDB, Azure Cosmos DB,Firebase Cloud: Azure, AWS, Docker, Kubernetes Payments: Stripe, PayPal, Square, Authorize.Net, Braintree APIs: REST, GraphQL, SOAP, OAuth 2.0, JWT Tools: Visual Studio 2022, Git, Azure DevOps, Jira 💡 What Sets Me Apart: I don’t just write code - I architect solutions. When you’re dealing with complex business requirements, you need someone who can translate abstract concepts into robust, scalable systems. Recent Wins: - Built secure payment processing system with Stripe (handling $50k+ monthly) - Migrated legacy .NET Framework app to .NET 8 (40% performance boost) - Integrated multi-vendor marketplace with PayPal, Stripe & bank transfers - Implemented real-time analytics dashboard with SignalR - Designed Azure-native solutions reducing infrastructure costs by 35% 🎯 Specialized In: ✅ Enterprise Web Applications ✅ Payment Gateway Integration (Stripe, PayPal, Square) ✅ Third-Party API Integration & Development ✅ REST/GraphQL API Development ✅ Cloud-Native Architecture ✅ Database Optimization & Design ✅ Legacy System Modernization ✅ Performance Tuning & Scaling 💳 Payment & Integration Expertise: -Payment Gateways:Stripe Connect, PayPal Express, Square APIs, Authorize.Net - Financial APIs: Plaid, Dwolla, banking integrations, cryptocurrency payments - Third-Party Services: Twilio, SendGrid, AWS SES, Google Maps, social logins - E-Commerce: Shopping cart integration, subscription billing, marketplace commissions - Security: PCI compliance, fraud detection, secure tokenization 🏭 Industry Experience: E-Commerce • FinTech • Healthcare • Real Estate • SaaS • Logistics • Marketplaces ⚡ My Process: 1. Deep Dive - I actually read your requirements (shocking, right?) 2. Smart Planning - Break complex problems into manageable pieces 3. Agile Delivery - Regular updates, no surprises 4. Quality Focus** - Clean code, proper testing, documentation 🌍 Availability: 📍 UTC+1 Timezone ⏰ 30-40 hrs/week 🗣️ Fluent English 📞 Flexible communication Why Choose Me? I’ve been where you are. Tight deadlines, complex requirements, budget constraints. I get it. That’s why I focus on delivering solutions that work reliably, scale properly, and don’t break the bank. Every project gets: - Detailed technical documentation - Clean, maintainable code - Comprehensive testing - Post-delivery support - NDA protection Ready to build something amazing? Let’s talk about your project. Ehtisham Zaki Senior .NET Architect & Full-Stack Developer ----- *Keywords: ASP.NET Core, C#, Blazor, Microservices, Azure, SQL Server, Web API, Angular, Docker, DevOps, Cloud Architecture, Enterprise Applications, Stripe Integration, PayPal API, Payment Processing, Third-Party APIs*

🔸 Top 1% in Upwork. 🔸 100% Job Success. 🔸 4,000+ hours. 🔸25+ years experience. I deliver high-quality, engineered software that is robust, works at scale, and can grow as fast as your business grows. ❝ High-quality software is not complicated - it just requires discipline and steadfast attention to detail on each step of the journey. ❞ What's stopping you from starting your journey to software excellence and fixing your business' pains? You can arrange a call with me to discuss your project needs for free in a 30-minute consultation call! Hi. I'm Jason - an experienced (25+ years) software architect and engineering professional involved in all parts of the SDLC (Waterfall, Agile and Hybrid methodologies). With a wealth of experience across industries such as commercial aviation, banking (real-time payments processing & FX), 24/7/365 manufacturing lines, e-commerce, and public transport (smart card), I will bring a passion for delivering elegant and reliable solutions to your project. I will work with you (and your team) to provide the best possible technical solution to your business problem. No matter the business domain or challenges you are facing, l have deep technical and architectural knowledge, as well as excellent communication skills, to help solve your business problem with the right software solution. I will bring to bear a highly focused set of technical and people skills to help your project succeed. The recommendations and advice I provide focus on minimizing risks and maximizing your project's chances of success. This is what my 25+ years of experience bring you: honest, robust, and intelligent solutions to see you succeed. When asked to build software, I deliver high-quality server-side C# .NET software solutions that give what you need: Software engineered to be robust, scalable, and designed to exceed your business expectations. What you'll get when you choose me to work with you: ⭐️ Clear, effective communication ⭐️ Precise, quality recommendations to ensure success for your project ⭐️ A focused, collaborative approach to work with you and your team ⭐️ A no-nonsense, results-focused approach that delivers value to your project For example, this are what a couple of my clients had to say: ❝Jason is by far the best architect I have ever worked with. He displays extreme ownership of his work and it's incredibly refined. Every deliverable was on time or ahead of time. Not only did Jason provide an incredibly performant and scalable architecture, the documentation he provided was top notch. I will forever keep Jason and my goto for any and all technical and solution architectural needs.❞ Cade - VP Engineering - US Software Company ❝Jason helped get our team on our feet for doing proper documentation and much more, actually. He helped improve the engagement of our team members and how they work together. If we can, we will surely ask for his help again in the future. I can only give high praise of Jason's quality of work. We highly recommended for documentation and general architectural design work.❞ Alexander L - Acting CTO - Global On Media If you are interested in working together, please invite me to your job on Upwork. I look forward to hearing from you soon and helping you deliver on your software vision. Regards, Jason. A highlight of my technical specialties I can help you with: ✅ .NET Technical and Solution architecture consultancy and design ✅ C#.NET ✅ Team leading, technical .NET mentoring, and coaching ✅ High availability solution designs (24/7/365) ✅ Event-driven architectures (including actor-based systems) ✅ Highly concurrent software design (thread-safe) ✅ High volume, low latency software designs ✅ Cloud (MS Azure and AWS) solutions ✅ Hybrid (on-premise and Cloud) solutions ✅ Microservices ✅ Message brokers and ESB ✅ SOLID, DDD, OOP, and TDD ✅ Experienced in Agile and Hybrid delivery models ✅ Container (Docker) deployments software using CI/CD (Azure Devops) ✅ Dependency Injection (DI using Autofac, DryIoc) A highlight of the software products I'm experienced with: ✅ Sparx Enterprise Architect ✅ JetBrains Rider IDE ✅ Confluence, JIRA ✅ Git ✅ Resharper, DotMemory, DotTrace ✅ VMWare (Fusion) ✅ Visual Studio 2019 IDE Other clients had this to say about my work with them: ❝Jason was a tremendous professional, outstanding architectural skills and understanding both technical and business requirements.❞ Brian V - COO - LaunchControl

I'm a seasoned software developer with more than 35 years in tech. Throughout my career, I've encountered nearly every challenge you can imagine-and have successfully navigated each one. My goal is straightforward: identify the core of your problem, provide reliable solutions, and deliver quality results: Areas Expertise: - I specialise in Networking, CDN optimisation, DevOps automation (CI/CD, AWS, Azure, GCP, Kubernetes). - AI/ML solutions, and Blockchain applications (Ethereum, smart contracts). - Full stack Web/Mobile development, comprehensive Database management (SQL & NoSQL), robust security assessments, and proactive Monitoring &Analytics. - idox, idox API for planning and public protection. Data warehousing and Communication template creation.

"Neil was a rockstar! He understood the scope of the project right away and was a great communicator along the course of the project. He constantly went above and beyond to keep the project on schedule. " I graduated in Computing with Cognitive Psychology, and became a freelance programmer. Initially this was Flash development and then more broadly Web Development. In recent years I have focused on Wordpress Development, for example custom plugins. I have been with Upwork since almost the beginning, and before that was a member of Elance. Over the years I have mastered dozens of technologies in the field, and have constantly strived to keep my skill set up-to-date. My goal is to leverage my diverse skill set to deliver exceptional web solutions that meet clients' needs and drive their business success. I am committed to continuous learning and staying updated with the latest industry trends and technologies. One of my core strengths as a freelance web programmer is my first-rate communication skills. I prioritize clear, concise, and proactive communication with my clients, ensuring that I fully understand their requirements and expectations from the outset. My clients consistently praise my ability to "read between the lines" and provide insightful solutions that align with their real needs. Through regular updates, detailed information, and prompt responses to queries, I ensure that the lines of communication are always open, fostering a collaborative and transparent working relationship. This approach not only helps in promptly addressing any issues that arise but also builds trust and satisfaction, leading to successful project outcomes. Additionally, I provide thorough documentation and comprehensive instructions for the client’s team, ensuring they have the necessary resources to continue managing the project effectively after completion. - **Programming Languages:** Java, JavaScript, Typescript, PHP, C#, SQL, CSS, HTML5 - **Frameworks and Libraries:** React, jQuery, Bootstrap - **Tools and Platforms:** Git, Google Cloud Platform, VS Code, Webpack, Ant, Babel, MySQL,Xampp, Wordpress "Neil developed a small WordPress plugin for my business. It's working great and Neil was very quick with resolving minor bugs that are of course inevitable with any software project. He showed great initiative and came up with excellent solutions/improvements that I could not have found. Communication was very easy aswell. All in all great value at a fair price and I'm happy with the outcome." "It was pure pleasure to work with Neil. He directly understands the task and works hard to complete it in time. We can only recommend Neil as we were very happy with this work." "Excellent developer and programmer. We got Neil to help us create a custom plugin for our web app. He was very proactive at providing solutions to the different challenges we faced and provided all documentation and instructions as requested. I highly recommend Neil and look forward to working with him in the future." "Neil was excellent at understanding what we wanted to accomplish and running with it. He has a very good ability to "read between the lines" which makes things go smoothly. I would absolutely hire him again." "Very good service! Neil developed an individual audio editor for us. He proceeded very professionally and implemented everything to our complete satisfaction. Thank you very much!" "Neil worked on a CL executable that augmented a geo-referenced set of data by communicating with Google services. He was reliable, flexible, added value to the project and required virtually no oversight to complete the tasks. Really enjoyed working with Neil and will track him down again for things in his skill set. Thanks Neil!!" "Neil is a very hard working developer. He does a great job of being upfront on the work that needs to be done. His communication is second to none. It was a pleasure to work with him." "This is a very complex JavaScript component. The PREVIOUS developer spent three months and did a crap job. I spent ten hours just to try to explain to him why his work does not meetto the requirements. We had to pull the plug at the end. Neil did a fantastic job. All the requirements are met on the first delivery, and he delivered it in only two weeks. I am so happy that I am speechless. This shows his qualities: he is very capable and very diligent at the same time. This makes a developer very valuable. Thank you Neil!." "Neil was great to work with. Timely, experienced and very cooperative. Gives suggestions for a better solution if he notices that something is off. If you hire Neil, you won't be disappointed!"

Hi, I'm an experienced video game programmer; comfortable developing across all platforms and genres. I can build your video game from start to end comfortably meeting deadlines and maintaining communication. I hope we can work together soon. Thanks, Scott.