Principal Design Engineer

We are seeking a Principal Design Engineer to elevate the craft and explore what's possible within Slack's iOS experience. As a Principal Design Engineer, you will rapidly prototype directly in code to bring real life to nascent, half-formed concepts that need both technical and craft judgment to assess their viability and their ability to make what we ship better.

Responsibilities:

• Exploring nascent, ambiguous interaction and device capability concepts by prototyping directly in code, bringing both technical depth and design craft to ideas before they're fully considered.
• Building a deep, current understanding of iOS platform capabilities (WidgetKit, App Intents, Live Activities, Shortcuts, etc.), rooting solutions in platform-native standards and interaction patterns by default.
• Acting as a skill multiplier for the broader design org, conducting training and documenting agentic prototyping workflows so designers themselves can prototype directly in mobile codebases.
• Partnering with designers and engineers across the org to inject technical and craft expertise wherever it's needed most.

Requirements:

• 8+ years at the intersection of product design and iOS engineering, with deep hands-on fluency in Swift/SwiftUI and Objective-C.
• A track record of building real, working prototypes in code to explore ambiguous concepts.
• Deep, current knowledge of iOS platform standards and capabilities (Apple HIG, native frameworks), paired with the judgment to know when a bespoke, non-standard solution is worth building.
• Experience creating tools, documentation, or training that help other designers and engineers level up their own craft.

Benefits:

• Time off programs
• Medical, dental, vision
• Mental health support
• Paid parental leave
• Life and disability insurance
• 401(k)
• Employee stock purchasing program

The typical base salary range for this position is $197,300 - $313,700 annually. In select cities within the San Francisco and New York City metropolitan area, the base salary range for this role is $237,700 - $344,700 annually.