Your iOS Knowledge == Your Rolex Collection

Think of your iOS knowledge base as a vault full of Rolex watches.

When a company tells you about their problem, you don’t panic.

You open the vault and pick the Rolex that solves it.

Why Grouping Matters

If your skills are scattered, you’ll struggle to answer fast.

If you group them, you can pull out the perfect watch in seconds.

But here’s the point: It’s not necessary to show everything you have.

That’s why you let them speak first. Find out their problem. Then show only the tools that solve it and make their day.

Example of a Vault

Here’s one way to group your iOS skills:

Concurrency

• Swift Concurrency (async/await, actors, MainActor)

• Combine (legacy bridging)

• Swift Macros (light use)

User Experience

• SwiftUI (NavigationStack, Observation)

• TipKit

• SF Symbols / Dynamic Type

• Vision / Live Text

• Core Haptics

• Widgets / Live Activities

Data & Offline

• SwiftData

• CoreData

• FileManager + background sync

• Keychain + Secure Enclave

Networking

• URLSession + WebSockets

• NWPathMonitor

• Alamofire

• Nuke / Kingfisher

Monetization

• RevenueCat

• Apple Pay / Wallet

Background Work

• BackgroundTasks

• App Intents / Shortcuts

• Push + Rich Notifications

Build, Test & Deploy

• Xcode Cloud / GitHub Actions / Fastlane

• Swift Testing + XCTest

• Snapshot testing

• Danger + SwiftLint

Crash & Performance Tracking

• Crashlytics / Sentry

• MetricKit

• Instruments

Analytics & A/B Tests

• Firebase / Segment / Amplitude

• Remote Config / Feature Flags

• Optimizely / Firebase A/B Testing

Security & Compliance

• App Attest / DeviceCheck

• Privacy Manifests / ATT

Media, Graphics & Location

• AVFoundation / PhotoKit

• Metal

• MapKit / MapKit JS

• CLLocation

The Takeaway

Don’t try to impress by dumping your whole vault on the table. Listen first. Let them tell you the problem. Then pull out the right Rolex and show you can fix it.

One example:
I raise feature adoption by integrating Haptics into onboarding flows — improved first-week retention from 42% to 50%. (Core Haptics)

That’s what gets you hired.