Software Engineer_iOS

At LinkedIn, our approach to flexible work is centered on trust and optimized for culture, connection, clarity, and the evolving needs of our business. The work location of this role is hybrid, meaning it will be performed both from home and from a LinkedIn office on select days, as determined by the business needs of the team. You'll join the Tracking team, which builds and operates a foundational data platform that powers LinkedIn's products and data ecosystem. Tracking enables the collection and delivery of product interaction data across LinkedIn's web, iOS, and Android experiences. This data supports product analytics, experimentation, business insights, and machine learning and AI systems across LinkedIn. As an iOS engineer on the Tracking team, you'll build and evolve the native mobile infrastructure that enables LinkedIn to capture high-quality product data at massive scale. You'll work on mobile SDKs and frameworks that run across LinkedIn's iOS experiences, solving challenging problems around performance, reliability, networking, concurrency, data persistence, and battery efficiency. You'll collaborate closely with iOS, Android, backend, infrastructure, data, and product teams to design systems that provide a consistent and reliable tracking experience across LinkedIn. Your work will directly influence the quality and efficiency of data flowing through LinkedIn's large-scale data platform and enable teams across the company to build better products. Responsibilities * Design and implement high-quality iOS frameworks and SDK capabilities used across LinkedIn's native applications. * Build reliable and performant mechanisms for collecting, processing, and delivering product interaction data from iOS devices. * Develop solutions that operate efficiently at LinkedIn scale while minimizing impact on application performance, memory, network usage, and battery life. * Work with Apple's native frameworks and technologies to build robust solutions for concurrency, networking, data persistence, and background processing. * Design and implement resilient client-side systems that can handle network variability, application lifecycle changes, and other real-world mobile conditions. * Collaborate with backend and infrastructure teams to evolve the end-to-end tracking architecture and client/server communication protocols. * Make architectural decisions by applying appropriate synchronous and asynchronous design patterns and balancing performance, reliability, maintainability, and developer experience. * Build and maintain robust CI pipelines and automated testing infrastructure for LinkedIn's iOS SDKs and applications. * Debug and optimize complex issues involving performance, networking, memory, concurrency, and data correctness. * Produce high-quality software that is unit tested, peer-reviewed, and continuously integrated. * Provide technical leadership by driving best engineering practices and contributing to large-scale, cross-functional, and mission-critical initiatives. * Identify and champion opportunities to improve developer productivity, SDK usability, and engineering efficiency across LinkedIn.

Basic Qualifications * BS in Computer Science or related technical field involving coding (e.g., physics or mathematics), or equivalent technical experience. * 2+ years of industry experience. Preferred Qualifications * 2+ years of relevant iOS development experience. * MS or PhD in Computer Science or related technical discipline. * Strong foundation in computer science, including data structures, object-oriented programming, and algorithms. * Strong experience with Swift and iOS development. * Experience building reusable iOS frameworks, SDKs, or shared mobile infrastructure. * Knowledge of iOS application architecture and common design patterns. * Understanding of multithreading, concurrency, networking, and performance optimization on mobile platforms. * Experience with API design and client/server communication principles.