Hire the Best .NET Core Developers
in Uruguay

Senior Software Engineer with 10+ years of experience designing, building and evolving enterprise applications using .NET, Python and cloud technologies. Strong background in distributed systems, REST APIs, microservices, PostgreSQL, SQL Server and Azure. Extensive experience applying AI-assisted software engineering practices to accelerate software delivery, automate engineering workflows, and improve development productivity. Currently building Tribu, a cloud-native multi-tenant SaaS platform for educational institutions, applying Domain-Driven Design, Clean Architecture and Azure-first practices.

I am a Senior Full-Stack Engineer with over 9 years of experience in both enterprise and startup environments, specializing in designing and developing scalable software. My background in cloud infrastructure, cybersecurity, and mobile development empowers me to build robust applications that meet diverse business needs. As the founder of my own startup, I apply my technical skills and entrepreneurial spirit to create innovative solutions. I excel at collaborating with teams across geographies, drawing from my experience working remotely in America and Europe. If you are looking for a versatile engineer who can transform ideas into reality and tackle complex challenges head-on, let’s connect. I am ready to help you elevate your project to the next level.

Proven Software Expert with over 19,900 hours of experience as a Remote Developer / Engineer in technologies such as .NET/.NET Core, JavaScript, Angular, Node.js, Python, AWS, Azure, SQL Server, and more. Check my Upwork reviews for client testimonials. Highly skilled in the design and development of Object-Oriented Software with extensive experience in the following technologies: - JavaScript Frameworks: Knockout JS, Polymer, Node.JS, AngularJS, React, Sencha Ext JS - Languages: C#, VB.NET, Javascript, Python - Web Development: ASP.NET, ASP.NET MVC, ASP.NET Web API, WCF, RestFul APIs - APIs: HubSpot, Twilio, Retell AI, Facebook, Linkedin, Twitter, Proofpoint, Urban Airship API, JIRA Cloud REST API, TestRail API, Slack Web API, Azure REST API, Google Sheets API. - Infrastructure as Code (IaC): AWS CDK, CloudFormation, Pulumi, Terraform - Containerization: Docker, AWS ECR, Azure Container Registry - Cloud Services: AWS EC2, SQS, SNS, Secrets Manager, Lambda, CodeDeploy, Azure - Continuous Integration: GitHub Workflows/Actions, TeamCity, TFS, Jenkins - Databases: Supabase, SQL Server, SQL Server Reporting Services, SQL Server Management Objects, PostgreSQL, MySQL, MongoDB, Snowflake - ORM: XPO, NHibernate, Entity Framework, Dapper, IdeaBlade - Payment Gateway Integrations: Stripe, Merchant Partner, Payment Express, Moneris - Monitoring and Logging: Kibana, Loggly, DataDog, AppOptics, Retrace - Automation and BPM: N8N, Appian, RPA, BPM (Business Process Management), AgilePoint BPMS - Application Development Frameworks: DevExpress eXpressApp Framework (XAF), CSLA.NET, Visual Studio LightSwitch - Build Tools: NAnt, MSBuild - Windows Development: Windows Service Applications, Windows Workflow Foundation (WF) - Version Control: GIT, TFS, Subversion, Perforce - Project Management: ClickUp, JIRA, FogBugz, Pivotal Tracker, TFS, Bitbucket, GitHub, Atlassian's Confluence/GreenHopper/Bonfire - UI and Libraries: DevExpress Libraries & Controls, DevExtreme - Data Formats: XML, JSON - Office Integration: VSTO, InfoPath/Word/Excel/Visio Add-Ins, VBA, Google Apps Script - Development Methodologies: Agile Methodologies, Kanban Native Language: Spanish

.NET developer with 15 years’ experience. Proficient in C#, SQL, and JavaScript. Very experienced in enterprise application development using ASP.NET (MVC, WebForms, Core), database design and modern REST Web API development. I have been responsible for mission critical line of business systems, and I have recently been working with a multinational and multicultural distributed team to deliver a cutting edge, global scale mobile and chat solution, built using the .NET stack, Azure, and Agile. I love tackling large engineering problems and place emphasis in clean and scalable code. Develop in .NET, heavily leveraging Azure for scalability. I am also the maintainer of the Azure DevOps build and release pipelines.

I’m a passionate and experienced fullstack developer with over 6 years of expertise in crafting high-quality web applications. My skill set allows me to analyze, develop, and maintain complex projects while adhering to best practices and delivering exceptional results. What I Excel At: Fullstack Development: Expertise in building and maintaining complex web and mobile applications with a focus on performance and scalability. Project Maintenance: Committed to enforcing best practices and ensuring the long-term success of existing projects. Client Communication: Skilled in understanding client needs and translating them into technical solutions that exceed expectations. Technologies I Work With: Frontend: React, Angular Backend: .NET (Core & Framework), Node.js Databases: SQL Server, MongoDB I’m always excited to take on new challenges and collaborate with clients to bring their visions to life. Let’s discuss how I can contribute to your next project! Kind regards, Adolfo Castelo

.NET • Cloud Architecture • Agile Delivery • WordPress WHAT I DO — SOFTWARE ENGINEERING & TECHNICAL DELIVERY I help companies design, build, and deliver scalable software systems while ensuring projects move efficiently from idea to production. Combining hands-on engineering with Agile leadership, I bridge the gap between technical teams and business goals to ship reliable, high-impact products. Software Engineering • Scalable REST API development (C# / .NET / Java) • Microservices architecture (AWS & Azure) • Backend system design & Clean Architecture • High-performance API optimization • SQL database design & complex query development • Third-party API integrations • Legacy system modernization & refactoring • Cloud deployments (Docker, Kubernetes, ArgoCD) • CI/CD pipelines & DevOps collaboration • Frontend integration (Angular / React) • Website development on Wordpress Technical Project Leadership • Agile delivery leadership (Scrum / Kanban) • Sprint planning, backlog management & delivery tracking • Cross-team coordination (Engineering, QA, DevOps) • Technical roadmap planning & architecture alignment • Risk management & delivery optimization • Jira workflow design & delivery dashboards • Stakeholder communication & technical documentation • Process improvement for faster and more predictable releases WHAT THIS CAN INCLUDE • Designing secure & scalable APIs • Leading Agile ceremonies and delivery planning • Coordinating engineering teams to meet deadlines • Building cloud-native applications • Implementing authentication & authorization flows • Monitoring performance & system reliability • Creating CI/CD pipelines for automated deployment • Translating business requirements into technical solutions • Improving team productivity through Agile practices • Website development on Wordpress ABOUT ME Hey! I'm Diego, a Software Engineer with experience building scalable backend systems and leading technical delivery for modern software teams. I specialize in C# and .NET backend development, cloud infrastructure, and microservices architecture, while also supporting teams as a Technical Project Manager and Scrum Master to ensure projects move efficiently from concept to production. Also I have solid experience creating amazing websites using Wordpress My background in Computer Science and Marketing helps me understand both the technical complexity of systems and the business impact behind them. I enjoy working at the intersection of engineering, architecture, and team delivery — helping organizations ship better software, faster. Fluent in English and Spanish 🌎 — experienced working with distributed international teams. 🚀 Let’s build scalable systems and deliver products that matter. 🔑 Keywords (for clients & recruiters to find me) Software Engineer, Technical Project Manager, Scrum Master, C# Developer, .NET Developer, Backend Engineer, ASP.NET Core, REST API Development, Microservices Architecture, AWS, Azure, Docker, Kubernetes, ArgoCD, CI/CD, Agile Delivery, Scrum, Jira, SQL Server, Clean Architecture, SOLID Principles, TDD, Cloud-Native Development, API Integration, Performance Optimization, Full Stack Developer, Angular, React, Wordpress.