Senior iOS Engineer
Core
Building high-performance, intuitive mobile experiences for the X iOS app used by millions to follow current events and participate in the global town square.
Role type
Senior IC iOS Engineer
Builds
X iOS application features, animations, and high-throughput integrations with AI model outputs
Domain
Consumer social media / Mobile iOS
Deliverable
product features
Required skills
Swift, UIKit, iOS development, Apple ecosystem knowledge, low-level performance optimization (memory/CPU/GPU), concurrency, reactive programming (Combine), API integrations, end-to-end feature delivery
Preferred skills
AI model integration, A/B testing, product judgment, user empathy
Technologies
Swift, UIKit, Combine, X, iOS, AI, Android, Backend, Web, Excel, Flow
Responsibilities
Create intuitive, engaging user experiences; refine pixels, animations, and interactions; build fast, high-performance systems; guide technical and product decisions; run A/B tests and identify issues; improve the app using user feedback
