David Castañeda

I’m a results-driven .NET Backend Developer with 10+ years of experience building scalable APIs, enterprise-grade applications, and cloud-native solutions. I bring deep expertise in C#, ASP.NET Core, and SQL Server optimization, plus 3+ years of hands-on Microsoft Azure specialization across serverless architectures and system integrations.

I’ve led improvements that directly moved delivery outcomes—reducing deployment times by 30% through CI/CD pipelines in Azure DevOps, and optimizing stored procedures across 50+ key procedures. In recent work with financial sector clients, I deliver secure, high-performance backend solutions in fully English-speaking environments while executing lift-and-shift migrations with zero downtime for critical services.

My approach is grounded in Agile/Scrum collaboration, security/compliance awareness, and continuous modernization—updating packages, modernizing caching solutions, and driving essential application updates. I’m actively preparing for AZ-204, focused on building reliable serverless APIs with strong CI/CD automation and secure integrations.