• Own complex product areas end-to-end—from discovery and design to implementation, rollout, and iteration—operating across Node/TypeScript backends and React frontends. • Lead architecture and system design for real-time, high-volume workflows (e.g., call routing on an event-driven SIP softswitch, UI over WebSockets, streaming audio for speech recognition). • Author clear technical design docs, set standards for code quality, testing, performance, and observability, and ensure designs scale simply as we grow. • Collaborate cross-functionally with PM, Design, and other engineers to translate ambiguous requirements into intuitive, performant experiences; make crisp trade-offs and document decisions. • Mentor and uplevel engineers through design reviews, pairing, and feedback; model engineering excellence and foster a culture of craftsmanship and clarity. • Improve developer experience (DevEx) and reliability by influencing APIs, data contracts, testing strategies, and progressive delivery practices across teams. • Participate in on-call and help uphold operational excellence for the areas you own.