• Design, build, and maintain a modular Swift SDK used by developers across Apple platforms • Work on crash reporting, hang detection, performance monitoring, and telemetry instrumentation • Build reliable mechanisms for offline storage, batching, retries, and data delivery under mobile runtime constraints • Contribute to SDK architecture, API ergonomics, and backward compatibility • Design and evolve APIs with a focus on stability, clarity, and long-term compatibility • Debug complex issues across devices, OS versions, and app environments, including threading, memory, and lifecycle challenges • Develop and maintain capture services for networking, user interactions, and system events, leveraging frameworks such as MetricKit • Optimize startup performance, binary size footprint, memory usage, and thread safety • Coordinate with cross-platform SDK teams (React Native, Flutter, Unity) to ensure native SDK changes do not introduce downstream breaking issues • Collaborate on OpenTelemetry alignment and upstream contributions • Partner with Product and Customer Success to incorporate developer feedback