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Hello there and welcome to my profile! I'm Daniel, a Full-Stack Developer with a decade of industry experience and a Bachelor's in Computer Science. I specialize in building and maintaining backend applications using C#, .NET, and relational databases. My expertise also extends to front-end development with experience in Angular and React. My background includes not only new development but also diving into existing codebases to resolve complex bugs and implement new features. I thrive on challenges and enjoy exploring new technologies to find the best solutions. While I am new to Upwork, I have extensive experience in remote work and independent project management, ensuring clear communication and on-time delivery. I am passionate about writing clean, efficient code and creating solutions that meet and exceed client expectations. As a native Portuguese speaker with fluent English and Spanish, I can seamlessly collaborate with diverse teams. Let's connect to discuss how I can help you achieve your project goals.

Software architect with over 8 years of experience specializing in cloud-based backend solutions, microservices, and scalable APIs. I design and implement architectures that meet high-performance demands, optimize user experience, and enable seamless integration across systems. Cloud-Native and Microservices Architectures: Skilled in breaking down monolithic applications into microservices using .NET, Azure, Kubernetes, Docker, and gRPC, supporting millions of active users and high transaction volumes. Experienced with CI/CD pipelines in Azure DevOps, containerization with Docker, and Google Cloud services (StateStore, Cloud Storage, Pub/Sub) for reliable scalability and resilience. Enterprise Integration and Real-Time Data: Proficient in integrating complex systems using Kafka, RabbitMQ, and Redis Pub/Sub for messaging, and managing data with PostgreSQL, MongoDB, Oracle, and Redis. My solutions are built for real-time processing and optimized for high availability. Secure, High-Performing APIs: I develop APIs focused on security and performance, implementing authentication and authorization with Identity Server, Auth0, Firebase, Azure Entra External ID along with observability, health checks, and error resilience. My APIs are thoroughly documented for easy integration and long-term maintainability. Legacy Modernization and Frontend Expertise: I bring legacy systems into modern architectures, leveraging .NET Core and Angular to create efficient, maintainable applications. Additionally, I have experience building responsive interfaces with Angular, React, and Flutter. Agile and DevOps Advocate: I work in agile teams, prioritize clean code and best practices, and ensure continuous improvement through structured CI/CD, monitoring, and automated testing. Passionate about delivering high-quality, cloud-based solutions that drive business value and user satisfaction. Azure Services: DevOps, App Service Plan, App Service, Functions, Container Apps, Monitor, Application Insights, Key Vault, VNET, SubNET, NSG, Private Endpoints, Storage, SQL Server, Redis, Entra ID, AD, VMs, Container Registry, Kubernetes, APIM, Logic Apps, WebJobs, Service Bus, Cosmos DB, Development: .NET (3–9) - Framework and VB, C#, Angular, React, Minimal API, Vertical Slice Architecture.

As a Senior Software Developer, I leverage my extensive experience in software development and integration to create innovative solutions for various clients. I have a strong background in Microsoft technologies, including Azure, .NET, and C#, which I use to design and implement scalable and secure applications. I am also a certified Azure Developer Associate and DevOps Engineer Expert, demonstrating my proficiency in cloud computing and DevOps practices. In my previous roles, I was responsible for creating integration solutions between SAP and other systems, managing CI/CD pipelines, and implementing TDD. Additionally, I created a Microsoft Teams Bot to provide information to the Field Operation Team. My goal is to continue delivering high-quality software solutions that meet the needs of my clients and contribute to the growth of the company.

🖥 Expert-Vetted Talent 📈 Top 1% — pre-screened Talent Managers and experts in their field. ⭐Senior .NET C# Software Engineer ⭐ Back-end development ⭐ Front-end development ⭐ Full-stack development ⭐ Umbraco Certified Master ⭐ nopCommerce Certified Developer ⭐ AI-Enhanced Development Leveraging 20+ years of software development expertise combined with cutting-edge AI tools, including Perplexity for rapid research, GitHub Copilot with Claude Sonnet 4.5 for intelligent code completion, and Claude Opus for complex problem-solving, I deliver production-ready solutions faster without compromising quality. This AI-augmented approach reduces development time by up to 40-55% while maintaining the architectural insight and code quality that only decades of experience can provide. 🤖AI-Assisted Development 🤖GitHub Copilot 🤖Claude AI Integration 🤖Rapid Prototyping 🤖Accelerated Delivery 🗟 Prompt Context Building Best practices and methodologies: 📢Scrum 📢SOLID principles 📢DRY – don't repeat yourself 📢YAGNI – you ain't gonna need it 📢Code Coverage (Unit Testing) 📢Version Control Standards (branches, pull requests, etc.) ‼️ Certifications ‼️ ️🥇 Scrum Developer Certified ️🥇 Scrum Master Certified ️🥇 Scrum Product Owner Certified ️🥇 Umbraco Certified Master ️🥇 nopCommerce Certified Developer Let me know if you have any questions! 🎆

SaaS Architect & Senior Full-Stack Engineer | AI, Real-Time Systems & Automation I design and build systems that don’t break under load — scalable SaaS platforms, real-time data systems, and AI-powered solutions used in production. With 18+ years of experience, I focus on backend architecture, distributed systems, and high-load environments, where performance, reliability, and clean design are critical. I’m typically brought in to design system architecture, resolve scaling issues, or implement complex features involving real-time data, AI, or automation. Core Expertise Architecture of multi-tenant SaaS platforms Real-time systems (WebSockets, SignalR, event-driven architecture) High-load backend systems and performance optimization Distributed systems: synchronization, caching, fault tolerance Integration of AI/ML into production systems Automation systems and workflows (n8n, API integrations, event pipelines) Proven Experience Systems handling 20–30 requests/sec from ~200 camera sources Data pipelines generating millions of records per month Solving performance bottlenecks with Redis and architecture redesign Implementing distributed coordination and synchronization Building real-time communication and telemetry systems AI, ML & Automation LLM integrations (OpenAI, Azure OpenAI, GitHub Models) Applied Machine Learning: clustering large-scale text data object detection in video streams (people, vehicles) Building AI-powered workflows, assistants, and automation tools Designing and implementing n8n workflows and integrations Combining AI + backend systems + automation pipelines Tech Stack Languages C#, Python, TypeScript Backend ASP.NET Core, REST APIs, SignalR Distributed processing, background workers Frontend Next.js, React, Angular Infrastructure Azure, Kubernetes (AKS), Docker Redis (caching, distributed locks) CI/CD (GitHub Actions) Data SQL Server, Azure SQL NoSQL (Azure Table Storage) How I Work I focus on architecture and long-term system stability I can quickly understand complex systems and deliver solutions I balance speed and correctness depending on the task Clear communication and structured execution Best Fit You’re building or scaling a SaaS platform You need real-time data processing You want to integrate AI or automation into your product You have performance or reliability issues You need someone who can own the problem and solve it end-to-end

My name is Fabio Silva, I am married and I work with programming for about 27 years. I love creating new interesting programs! * My strong points: - I am an expert in C# and .Net, but I can adapt myself very easily and quickly to any different language and technology. I have strong experience in migrating older systems, databases, and legacy languages to modern alternatives. - I am experienced in Code Reviews, especially for C# and Javascript. - I have great experience in finding and troubleshooting hard bugs, even with limited data and information, and even with hard access environments. - Due to my experience, I usually provide a great range of creative solutions and alternatives to the most diverse problems. * My current specialization: - My focus is C# and .Net Core, in any area where it can be leveraged. - On the web, I work on Asp.Net Core using Microservices, Razor Pages, MVC, and WebApi, and some quick tasks with Blazor. In the front end, I work with Plain Javascript and React, KnockoutJS, with some experience in Angular. - On the desktop, I'm good at creating Console, Windows Forms, WPF, and Avalonia apps. - I work mostly with Microsoft SQL Server, PostgreSQL, and SQLite databases. - I work with Git daily as shared source control, with experiences in GitHub and BitBucket. - Finally, I can do cross-platform development (Linux/Windows/macOS). And in any case, I can deploy to docker containers. * Other talents: - Languages like Basic, Clipper, Visual Basic (and VB.Net), Borland Delphi - Databases like MySql, Interbase/Firebird - Other like PowerShell Scripts, Selenium WebDriver