In this episode of Beyond the Noise, Matt talks with Romain Guy, who spent 18 years as an engineer and engineering leader at Google on Android, joining when the team was around 40 people and the product was still a secret internal project. Romain walks through the technical reality of those early days: a VM with no JIT compiler, stop-the-world garbage collection, and a UI toolkit with no GPU acceleration. The conversation covers the bandwidth ceiling that forced Android's UI toolkit onto the GPU, the surprising complexity of text rendering, and the tradeoff behind Jetpack Compose sharing a rendering layer with the old View system.From the pain of Java Native Interface (JNI) to building Filament, a 3D rendering engine now powering Android XR headsets, the episode shows that performance is less about benchmarking and more about the mindset you bring to every decision.

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“What did the council decide on item 42?” — answered with the speaker and the moment.

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