Yoel Castillo

Senior Software Developer

Open to offers · Member since 9 Sep 2026

Message

Location: La Paz, Honduras

Desired salary: Unspecified

Work preference: Remote Only / Full Time

Experience level: Senior

About

Professional summary

I am a Senior Software Developer and Software Engineer with more than seven years of experience building, maintaining, and modernizing enterprise applications. My primary expertise is in C#, ASP.NET Core, Web API, .NET Framework, SQL, and Docker.

I have worked on complex systems in banking, financial operations, and institutional environments. I design relational databases, develop RESTful APIs, optimize stored procedures, and deliver reliable backend solutions using SQL Server, Oracle, MySQL, and PostgreSQL.

I am experienced in both modern and legacy Microsoft technologies, including ASP.NET Core MVC, ASP.NET MVC, WebForms, Windows Services, VB.NET, Azure DevOps, and Azure authentication services. I have also developed integrations with SharePoint, Active Directory, Microsoft Office 365, Oracle EBS, and Oracle Cloud.

I use Docker for containerized deployments and Azure DevOps for CI/CD pipelines, automated builds, release management, and deployment automation. I am comfortable collaborating through Git and Subversion within Agile/Scrum teams.

I also have frontend experience with JavaScript, HTML5, CSS, React, jQuery, DevExtreme, and Bootstrap. I continuously improve my skills in Clean Architecture, microservices, advanced Docker workflows, the React ecosystem, AWS, Azure, and AI-assisted development tools.

Tech stack & tools

Working toolkit

Experience

Career history

Software Engineer Software Mind

Dec 2023 – Mar 2026

Worked remotely for a USA-based company on backend development using C#, .NET Framework, .NET Core, Web API, SQL Server, ASP.NET WebForms, Windows Services, and VB.NET. Maintained and supported enterprise applications, documented and optimized RESTful APIs, resolved defects, performed QA testing, and supported releases.

Developed PHP Laravel and MySQL services, RESTful APIs, and third-party integrations with Docker-based containerization. Maintained databases through stored procedures, performance tuning, and schema updates; automated builds and deployments through Azure DevOps CI/CD pipelines; and integrated frontend components using JavaScript, HTML5, CSS, and React for chat, events, dispatches, and dashboard modules.

Analyst Programmer NGS - Central American Bank for Economic Integration

Oct 2018 – Dec 2023

Led the migration of a mission-critical travel management system from Java/ADF to ASP.NET MVC and .NET Core. Built and maintained enterprise systems using C#, ASP.NET MVC, Web API, DevExtreme, SQL Server, Oracle, Entity Framework, SharePoint, and Active Directory.

Developed PL/SQL integrations between Oracle EBS On-Premise and Oracle Cloud for supplier workflows. Implemented .NET Core modules with Azure B2C authentication, maintained legacy ASP.NET WebForms applications, built a .NET Core and React PWA authenticated with Microsoft Office 365, and deployed through Azure pipelines within Agile/Scrum teams.

Software Developer Grupo Sinergia

Apr 2018 – Oct 2018

Developed custom software solutions for multiple clients using Java, Hibernate, HTML, and Bootstrap. Built an HR evaluation platform for Grupo Terra.

Improved ERP modules for Del Campo School and integrated VB.NET systems with ERP databases. Delivered application enhancements across client projects.

Developer Alas Repuestos

Jan 2018 – Apr 2018

Enhanced ERP and payroll systems developed with C# WinForms. Supported improvements to operational business applications.

Developed a web system for vehicle intake and workshop tracking using PHP and PostgreSQL. Created functionality to support workshop workflow management and vehicle records.