01 · Backend
Services and data
Java, Spring Boot, Python, SQL, APIs, and microservices.
Aaron Rosas · Software Engineer
I build systems that stay understandable.
I work across software quality and delivery: AI-assisted technical audits, code validation, acceptance-criteria compliance, findings follow-up, and dependable paths to production.
Currently
QA at Quanta · Application Delivery at VALMEX
From code to operation
My work connects backend implementation with everything required to deliver, observe, and maintain it.
02 · Delivery
Software in motion
Docker, Kubernetes, AWS, CI/CD, and controlled operations.
03 · Signals
Quality and observability
Splunk, Grafana, Prometheus, testing, and technical documentation.
Work and project shells
The legacy site is a real piece of work. The remaining spaces are reserved for projects I am not ready to publish yet.
Legacy Portfolio
The previous version of my personal site, preserved as a working snapshot and an ongoing piece to revisit and improve.
HTMLCSSJavaScript
Reserved
Backend Systems Case Study
A reserved project shell for a future case study on backend modernization, data flows, and reliable service delivery.
JavaSpring BootSQL
Reserved
Cloud Delivery Case Study
A reserved project shell for future work on containers, deployment pipelines, and controlled cloud-native operations.
DockerKubernetesAWS
Technical notes
Existing articles about web development and engineering practices.
Tutorial
Astro for Content-Driven Sites: A Practical Starting Point
A compact guide to Astro's server-first model, content collections, and deliberate client-side interactivity.
AstroJavaScriptWeb Development
Engineering
TypeScript Practices That Keep Boundaries Honest
Strict types, validated inputs, and small domain models that make invalid states harder to represent.
TypeScriptJavaScriptBest Practices
CSS
Modern CSS Patterns That Reduce JavaScript
Container queries, native nesting, and resilient layout patterns for components that adapt without runtime measurement.
CSSDesignFrontend
Beyond code
The same discipline, through another medium.
DJ and producer in training, LooLoo graduate and member of the looz collective. My sound moves through melodic, afro, progressive, and techno territory.