Scaling Voice AI at MasterClass with Effect & TypeScript #3

In this episode of Cause & Effect, Johannes Schickling had a conversation with David Golightly, Staff Engineer at MasterClass, to explore how his team built Cortex – a real-time voice AI orchestration layer that powers personalized conversations with celebrity instructors like Gordon Ramsay and Mark Cuban.

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• (00:00) - Intro & David's background
• (04:56) - Discovering Effect & early impressions
• (08:32) - Why RxJS wasn’t enough for Cortex
• (16:15) - MasterClass On Call
• (19:10) - Building the orchestration layer
• (25:30) - Incremental adoption of Effect at MasterClass
• (31:43) - Text-to-speech component
• (40:08) - Error handling, observability, open-telemetry
• (01:01:20) - Looking ahead: Effect 4.0 & the future
• (01:08:00) - Closing thoughts