At Netlify, they utilize a diverse range of technologies, languages, and paradigms to build their product, including JavaScript. The team responsible for several mission-critical Node.js services uses automation, confidence, and consistency as key principles to streamline their workflows. They leverage tools such as Cookiecutter to create consistent project templates, GitHub labels to triage and prioritize issues, and automated tests to ensure robustness. Additionally, they utilize CI/CD pipelines with GitHub Actions, dependency management with Renovate, and automated releases with Release Please. These processes have allowed Netlify to improve efficiency, quality, and consistency across their projects.