Software Engineer II -iOS

• Design, develop, and maintain the core iOS observability SDKs responsible for crash reporting, hang/ANR detection, performance monitoring, and broad bug diagnostics.
• Engineer highly performant, low-overhead code. Our SDKs run in the critical path of all Uber apps and must have a minimal impact on application performance and battery life.
• Dive deep into complex crashes, hangs, memory issues, and performance bugs from across all Uber apps, performing root cause analysis and implementing platform-level fixes.
• Develop new tooling and heuristics to automatically detect and classify a wide spectrum of bugs, from simple UI glitches to complex, multi-threaded race conditions.
• Collaborate with backend engineers to build the data ingestion pipelines and dashboards that process terabytes of diagnostic data from our mobile fleet.
• Act as a subject matter expert on iOS stability and performance, providing guidance, tooling, and best practices to feature teams across Uber.
• Continuously innovate on our diagnostic capabilities, exploring new ways to capture and surface critical health metrics related to bugs, crashes, and performance from hundreds of millions of devices.
• Uphold rigorous standards for code quality, testing (especially unit and integration testing for an SDK), and on-call practices for a Tier-0 service.

• Bachelor’s degree or equivalent in Computer Science, Engineering, Mathematics or related field OR 3-years full-time Software Engineering work experience, WHICH INCLUDES 3-years total technical software engineering experience in one or more of the following areas: Programming language (e.g. Swift, Objective C, C)
• Extensive iOS development experience, with deep proficiency in Swift and Objective-C.
• Proven experience in building, maintaining, and shipping mobile SDKs or shared, reusable libraries.
• Deep understanding of iOS internals, memory management (ARC, retain-cycles), and concurrency (GCD, OperationQueues).
• Expertise in low-level debugging and performance optimization using tools like Instruments (Time Profiler, Leaks, Allocations, Hangs), lldb, and crash log analysis.
• Familiarity with mobile observability, crash reporting, and performance monitoring principles and tools.
• Experience developing for applications at massive scale (handling hundreds of millions of users) is a strong plus.
• Ability to take ownership and independently drive complex, low-level platform projects to completion.
• Strong focus on writing highly performant, testable, and resource-efficient code.

Experience developing for applications at massive scale (handling hundreds of millions of users) is a strong plus.