The definitive knowledge map for Senior iOS Developers. Track your progress across 18 domains — from Swift fundamentals to system design.
Overview
Click any domain to explore its topics. Check off what you know — progress is saved locally.
Foundations
The core skills every iOS developer must master. These are table stakes for any senior role.
Professional
Skills that hiring managers expect from senior iOS developers. You'll be tested on these in interviews.
Differentiators
Specialized knowledge that separates good from great. These skills make you memorable in interviews and invaluable on teams.
Leadership
Skills for staff+ engineers and mobile architects. System design, team leadership, and staying ahead of the curve.