Principal Design Engineer (iOS)

Quick Facts

• Role: Principal Design Engineer (iOS)
• Focus: Design-to-engineering prototyping for Slack’s iOS experience

Description

Lead end-to-end design-to-engineering prototyping for Slack’s iOS experience by turning ambiguous concepts into working, native-feeling experiences. You’ll rapidly prototype directly in code to test nascent ideas, combining technical depth with design craft and judgment.

Responsibilities

• Explore nascent, ambiguous interaction and device capability concepts by prototyping directly in iOS code.
• Convert “what ifs” into tangible experiences users can feel and react to.
• Apply deep, current knowledge of iOS platform capabilities (WidgetKit, App Intents, Live Activities, Shortcuts) and base solutions on platform-native standards.
• Know when and how to break from native patterns to build bespoke solutions.
• Multiply team skills by training and documenting agentic prototyping workflows for designers working in mobile codebases.
• Partner with designers and engineers to provide technical and craft guidance and direct solutions as teams need.

Requirements

• 8+ years at the intersection of product design and iOS engineering
• Deep hands-on fluency in Swift/SwiftUI and Objective-C
• Proven ability to build real, working prototypes in code to explore ambiguous concepts, with evidence of impact
• Deep, current knowledge of iOS platform standards and capabilities (Apple HIG, native frameworks)
• Experience creating tools, documentation, or training that help designers and engineers level up their craft