Job description

We build the on-device systems that deliver ads across the Apple ecosystem: OS daemons, frameworks, and SDKs that fetch, rank and filter ad candidates; enforce ad policy and legal compliance; and protect user privacy before our partner apps even render anything. This is not a UI or app-building role: this is a systems and platform engineering position that requires working knowledge of cross-process communication, concurrency, on-device business logic, and privacy-by-architecture at scale. Deep, expert-level understanding of OS fundamentals (process/memory management, scheduling, file systems), on any platform — Apple experience not required Extensive professional software development experience in a C-like language, including systems with significant scale and reliability requirements Expert-level understanding of cross-process communication and concurrent programming — multi-threading, synchronization, locking, and reasoning about races/deadlocks in production systems Track record of designing and operating high-performance client SDKs or libraries at scale — including caching, versioning, breaking changes, and feature-flagged rollouts, with demonstrated judgment on tradeoffs Demonstrated experience owning architecture and technical direction for complex, long-lived codebases, including legacy components, and driving multi-team initiatives to resolve structural issues in them Proven ability to operate with significant ambiguity, set technical direction without a playbook, and drive alignment across engineering, product, and business stakeholders History of mentoring and growing other senior engineers; excellent written and verbal communication, including with non-technical partners Bachelors Degree or equivalent experience. Ad tech; Apple-platform fundamentals incl. Swift/Obj-C; designing/maintaining public APIs or SDKs for external developers; CoreData/libdispatch/XPC/Swift concurrency/daemons; telemetry/observability; client-server networking; experience setting technical strategy for a multi-team org

Requirements

Must-haves

Deep, expert-level understanding of OS fundamentals (process/memory management, scheduling, file systems), on any platform — Apple experience not required
Extensive professional software development experience in a C-like language, including systems with significant scale and reliability requirements
Expert-level understanding of cross-process communication and concurrent programming — multi-threading, synchronization, locking, and reasoning about races/deadlocks in production systems
Track record of designing and operating high-performance client SDKs or libraries at scale — including caching, versioning, breaking changes, and feature-flagged rollouts, with demonstrated judgment on tradeoffs
Demonstrated experience owning architecture and technical direction for complex, long-lived codebases, including legacy components, and driving multi-team initiatives to resolve structural issues in them
Proven ability to operate with significant ambiguity, set technical direction without a playbook, and drive alignment across engineering, product, and business stakeholders
History of mentoring and growing other senior engineers; excellent written and verbal communication, including with non-technical partners
Bachelors Degree or equivalent experience.

Nice-to-haves

None flagged.

Application prep

Use the role’s language and application details while tailoring your materials.

Keywords to mirror

swift

Platform: apple
Effort: medium