Senior iOS SDK Engineer

United States or Canada, US Remote - Pacific Time

About the Role

We are looking for aSenior iOS SDK Engineerto join our Mobile Observability team, responsible for designing, building, and maintaining ouropen-source Swift SDKacross Apple platforms (iOS, tvOS, watchOS, and macOS). This is ahands-on, SDK-first rolefocused on building high-performance instrumentation libraries embedded in customer applications. It is ideal for someone who enjoys working close to the platform, solving difficult edge cases, and designing APIs that other developers rely on. Youll work on performance monitoring, telemetry capture, hang detection and crash reporting, all designed for minimal overhead and maximum reliability. You collaborate across platform teams and contribute to evolving observability standards such as OpenTelemetry.

What You Do

• Design, build, and maintain amodular Swift SDKused by developers across Apple platforms
• Work oncrash reporting, hang detection, performance monitoring, and telemetry instrumentation
• Build reliable mechanisms foroffline storage, batching, retries, and data delivery

under mobile runtime constraints

• Contribute toSDK architecture, API ergonomics, and backward compatibility
• Design and evolve APIs with a focus onstability, clarity, and long-term compatibility
• Debug complex issues across devices, OS versions, and app environments,...