Hire the Best .NET Core Developers
in the Dominican Republic

I’m a professional software engineer. My overall experience with .net software development is over seven years. I can effectively combine my knowledge and your idea to provide an excellent solution for your business. I have worked on a lot of various projects from different areas using the modern technologies. I have strong knowledge in software architecture design. I like to use modern approaches and the best practices of programming. Such an approach allow me to provide the best quality for your product. Specialities & Experience: • Javascript: Angular, JQuery • .Net: C#, ASP.NET MVC/CORE, Web API, Entity Framework, Dapper, Microservices • DB: MS SQL Server, Mysql, SQlite, MariaDB • Software life-cycle, agile, team leading • Design patterns, software architecture • CI/CD: Gitlab • Dev tools: Github, Jira, Visual Studio • UX Design: Adobe XD, SVG icon builder, Photoshop

Hi! I’m Domingo Ruiz a backend-first engineer with 4+ years building and maintaining REST APIs and microservices in corporate/regulated environments, including recent contractor work with AmTrust North America (USA). I specialize in designing production-ready backend systems with .NET and Java microservices (Quarkus/Spring Boot), API security (OAuth2/JWT), and SQL performance tuning. I can also support UI integration when needed using ASP.NET MVC, Blazor, and React (API consumption and backend integration). What I deliver: Backend APIs with .NET 8 / ASP.NET Core (clean architecture, SOLID, maintainable code) Java microservices with Quarkus / Spring Boot (REST endpoints, validation, documentation) REST API design with JSON/XML, OpenAPI/Swagger, and clear contracts SQL performance and troubleshooting (query optimization, indexing, slow endpoint analysis) Security and auth patterns (OAuth2/JWT, Keycloak) Testing and quality (xUnit, JUnit/Mockito), CI/CD, Docker, basic Kubernetes exposure Production/staging support, debugging, and collaboration with distributed teams If you share your goal (new API, modernization, performance, integration, stabilization), I’ll propose a clear plan and ship in small, reliable iterations with frequent communication.

Top-Rated Plus Freelancer | Senior .NET Engineer | API Integrations | Legacy Modernization | AI-Assisted Automation I am a Senior Software Engineer with over 20 years of professional experience helping companies modernize legacy systems, build reliable APIs, and integrate complex business platforms. I started my career working with Visual FoxPro and desktop-based enterprise applications, and later transitioned to the .NET ecosystem, where I have spent many years building scalable backend systems using C#, ASP.NET, and SQL Server. This background allows me to work comfortably with both legacy and modern technologies, acting as a bridge between old systems and new architectures. In recent years, I have also incorporated AI-assisted tools and platforms into my workflow to improve automation, data analysis, and development efficiency, including experience with Abacus.AI for AI-driven insights and process optimization. What I specialize in Legacy system modernization (Visual FoxPro, Delphi → .NET / ASP.NET Core) API development and system integrations (REST & SOAP) ERP and HR system integrations (Epicor, ADP, Workday, SAP) Database-driven applications (SQL Server, Oracle, MySQL) Automation and productivity solutions (AutoIT) AI-assisted automation and data analysis How AI adds value to my work AI-assisted development for faster debugging, refactoring, and optimization Using AI tools to improve reporting, data interpretation, and business insights Supporting automation workflows with AI-driven analysis Enhancing legacy systems with modern, intelligent components Recent work highlights Migrated legacy Visual FoxPro applications to C# and ASP.NET with SQL Server backends Integrated payroll and HR platforms (ADP, Workday) with custom ERP systems Designed and implemented RESTful APIs for multi-system environments Applied automation and AI-assisted tools to reduce manual processes Led small development teams on long-term enterprise projects Technical Skills Languages & Frameworks: C# (.NET, ASP.NET, ASP.NET Core, WinForms, WPF), Visual FoxPro, Delphi, Angular, AutoIT, Java Databases: SQL Server (T-SQL), Oracle (PL/SQL), MySQL APIs & Integrations: REST, SOAP, third-party and internal systems Reporting: SSRS, Crystal Reports ERP & Business Systems: Epicor, SAP, ADP, Workday AI & Automation: Abacus.AI, AI-assisted development, automation workflows Tools: SSIS, Inno Setup, InstallShield I am a reliable, detail-oriented professional who values clean code, clear communication, and long-term collaboration. If you need help modernizing a legacy system, integrating APIs, or enhancing your applications with automation and AI-assisted solutions, I’d be glad to work with you.

Hello! I’m Dalton Cabrera, a Full Stack Software Developer with over 8 years of experience. I work on web, desktop, and mobile projects, helping businesses create useful software. My Skills: Full-Stack Development: I can handle both frontend (Vue.js, AngularJS, Bootstrap) and backend (ASP.NET Core, Laravel, Web API), plus mobile apps with Flutter. Technical Knowledge: Languages: C#, SQL, PHP, JavaScript, HTML/CSS Frameworks and Libraries: ASP.NET, ASP.NET MVC, Entity Framework, Laravel , WinForms Tools: Docker, MySQL, Git, jQuery Reliable: I always meet deadlines and communicate clearly to ensure your project is a success. Why Work With Me? I am easy to work with and understand what clients need. I can help you with a custom web app, a mobile app, or improving your current system. I aim to meet and exceed your expectations. Let’s talk about your project. I’m excited to work together and achieve great results. Best regards, Dalton Cabrera

Hi, I’m Lorenzo Núñez, a Full Stack Developer with experience building real-world applications, especially in financial and data-driven systems. I enjoy working on products that process data, apply business logic, and deliver clear results to users. I focus on building clean, scalable solutions that actually work in production. 🔹 💻 Web Development I’ve worked on web applications where I handle both backend and frontend, building APIs, integrating services, and creating user interfaces. My experience comes mainly from financial systems, where reliability, performance, and data integrity are key. 🔹 Tech Stack: React, .NET, Tailwind CSS 🔹 Databases: SQL (design, queries, optimization) 🔹 Backend: REST APIs, business logic, integrations 🔹 Tools: Git, Jira 🔹 Architecture: Clean code, scalable structure, API-first approach 🔹 🧠 Additional Experience I also have a background in QA, including test automation and validation of complex systems. This helps me write better code and catch issues early. I’m a responsible, detail-oriented developer who communicates clearly and focuses on delivering real value. I like building long-term working relationships and growing with the projects I’m part of. If you have an idea or project in mind, feel free to reach out — I’d be happy to help 🚀

I help founders, agencies, and growing businesses ship SaaS MVPs, internal dashboards, REST APIs, and AI-powered automation systems — built on .NET, Angular, and modern cloud-ready stacks. In the last 11+ years I've built everything from multi-tenant SaaS platforms and CRM integrations to AI-driven workflows that connect WhatsApp, OpenAI, Google Sheets, and business CRMs. My clients are usually non-technical founders, startup CTOs, or product teams that need a senior developer who can own a feature end-to-end — backend, frontend, database, integrations. WHERE I CAN HELP YOU: ✔ SaaS MVPs & multi-tenant platforms (.NET/NextJs + Angular + SQL Server/MongoDB) ✔ REST APIs & third-party integrations (Stripe, WhatsApp Cloud API, CRMs, OpenAI, Claude) ✔ Admin dashboards & internal tools for operations teams ✔ AI automation workflows (chatbots, lead capture, CRM sync, document processing) ✔ Refactors, performance tuning, and scaling legacy .NET apps MAIN STACK: ASP.NET Core • C# • Angular • SQL Server • Entity Framework Core • Docker • IdentityServer / OAuth 2 • Azure-ready architectures WHAT MAKES WORKING WITH ME DIFFERENT: I don't just take tickets. Before I write code, I ask why we're building it and who uses it — because the cheapest bug is the one we never built. On a recent project I cut profile-loading time by 70% just by reading the actual SQL queries instead of trusting the ORM. That's the kind of attention I bring to every feature. If you're building a SaaS, scaling an internal platform, or wiring up AI into a real business workflow, send me a message describing your project — I usually reply within a few hours and I'm happy to do a free 15-min call to see if I'm the right fit.