Sergio Estrella 👋

Full-Stack Developer with 5+ years of experience building web applications, CI/CD pipelines, and high-impact internal and customer-facing products across healthcare, logistics, education, and media. My core stack includes Angular, NestJS, TypeScript, Tailwind CSS, MySQL, WebSockets, REST APIs, Docker, and AWS. I’ve worked on improving delivery speed, test coverage, performance, and operational reliability through better engineering practices, automated testing, and scalable frontend/backend architecture. Across roles, I’ve helped teams reduce delivery time, improve platform stability under load, and ship business-critical features. My experience includes building healthcare product interfaces, logistics tools, large-scale search systems, and developer education content focused on performance and testing. I’m especially interested in product engineering, developer experience, modern web architecture, testing strategy, and systems that create measurable operational impact. I’m also involved in tech education and community building through initiatives such as Backbone UTP, Pereira Tech Talks, and Google Developer Group.