Alejandro Rojas

I’m a software engineer with 12+ years in IT, specializing in developing scalable, enterprise-grade software solutions—especially within the fintech industry. I build robust backend systems using .NET and modern cloud technologies, guided by object-oriented programming, SOLID principles, and modern design patterns.

In my current role at Deloitte, I architected and delivered scalable .NET and AWS modules that enhanced reliability and reduced downtime by 15%. I engineered backend systems with PostgreSQL and RabbitMQ using domain-driven design, improving data integrity and system performance by 20%, and I optimized database performance to achieve a 25% increase in query efficiency through advanced SQL Server tuning and C# refactoring.

I also focus heavily on delivery and operational excellence: I orchestrated containerized deployments with Docker and Entity Framework to reduce operational costs by 10%, and I automated CI/CD pipelines with AWS and Docker to cut deployment time by 30%. On the quality and safety side, I hardened security with OAuth2 and JWT to reduce vulnerabilities by 40%, and I improved observability with AWS CloudWatch and RabbitMQ to reduce incident response time by 50%.

Earlier, at Junior Achievement of Southern California, Centinela Youth Services, and YMCA of Metropolitan Los Angeles, I delivered scalable applications across .NET and Java ecosystems, designed microservices, automated testing, and refactored legacy systems to reduce technical debt. I’m passionate about open-source contributions and collaborative developer communities where innovation and integrity are paramount.