Alejandro Rojas

I’ve spent 12+ years in IT designing and developing innovative software solutions for professional services companies, with a focus on full life-cycle delivery. I care about writing efficient, maintainable code and turning component integrations into functional systems that perform in production.

At Deloitte, I architected cloud-native applications with React and PostgreSQL, improving user experience and increasing system reliability by 30%. I built CI/CD pipelines with Docker and Kubernetes, cutting deployment times by 40%, optimizing PostgreSQL with indexing and partitioning to reduce query response times by 25%, and refactoring legacy code to modern React standards to reduce technical debt.

I also strengthen reliability and delivery through automation and observability. I improved code quality and reduced bugs by 20% using Jest and Selenium, hardened security with OAuth2 and JWT for compliance and data protection, and used OpenTelemetry to gain real-time performance insights—improving incident response times by 15%.

In earlier roles, I engineered microservices and migrations that reduced downtime, latency, and release friction—building modular systems with Node.js and AWS, and orchestrating data transitions to PostgreSQL. I’ve delivered data-driven applications with Python and Django, and built web platforms with Java and Spring Boot, consistently emphasizing scalable infrastructure, CI/CD workflows, and strong engineering practices—alongside a genuine passion for open-source contributions and developer community involvement.