Software Engineer L4/5, Javascript Foundations

Who We Are

We are the JavaScript Foundations (JSF) team in Warsaw. We are key partners in building the "UI Paved Road" at Netflix, operating within a global, virtual organisation that shepherds JavaScript across the entire company — from the browser to Node.js services powering our studio and streaming systems.

Our Mission

Our product isn't a single app — it’s the developer experience itself. While our sibling teams focus on specific layers of the stack — Node.js Platform on server runtime, UI DevEx on browser runtime, and Design Systems on visual components — we tackle the foundational language-level challenges that unify them all. We own the strategy for dependency management, supply chain security, and TypeScript, ensuring the ecosystem remains healthy, secure, and modern across both browser and server.

Why It Matters

At our scale — serving hundreds of millions members — "foundational" means high-impact. Whether it’s automating annual Node.js LTS migrations for thousands of services or defining the patterns for how we share code across the fleet, we measure our success by the collective velocity of every UI engineer at Netflix. We tackle language-level problems so they can focus on entertaining the world.

The team anchors on the human-facing elements of technology. These elements are emphasized in our Culture Memo and are applied in our day-to-day work. Code is a very small slice of this team's impact.