Hire iOS Developers for iPhone, iPad and Watch

How to vet an iOS developer

A strong iOS developer is fluent in Swift, comfortable in both SwiftUI and UIKit, and understands what happens under the hood: reference counting and retain cycles, the main thread and Swift concurrency, and how iOS limits background work. Ask candidates to show an app they built and explain how data flows from the network to the screen, and how they would test it.

Experience with Apple's tooling and rules matters too. Developers should know how to profile with Instruments, manage signing and provisioning, ship through TestFlight and App Store Connect, and avoid common review rejections. Look for curiosity about each year's platform changes, since iOS evolves quickly and older habits can become liabilities.

Platform choice shapes the role. A native iOS specialist is the right hire when the product depends on Apple-specific capabilities, while many teams cover both platforms with cross-platform engineers. Our native vs cross-platform comparison and iOS vs Android comparison help decide which skills you actually need before interviewing.

• Confident with Swift concurrency, async and await, and actors.
• Able to explain when to use SwiftUI and when UIKit fits better.
• Familiar with Instruments for memory, CPU and energy profiling.
• Understands privacy requirements, permissions and the Keychain.
• Writes unit and UI tests as part of normal work.
• Ships through TestFlight and handles App Store review calmly.

Interview questions we use for iOS developers

These questions reveal whether a candidate has solved real iOS problems. Good answers include examples from their own work, an honest view of trade-offs and an understanding of how Apple's platform constraints shape design decisions. Candidates should also know when SwiftUI is the better fit.

• What is a retain cycle, and how have you found and fixed one using Instruments?
• When would you build a new screen in UIKit rather than SwiftUI?
• How does actor isolation in Swift concurrency prevent data races?
• How would you split a large app into modules with Swift Package Manager?
• How do background refresh and background tasks work, and what are their limits?
• What does an app's privacy manifest contain, and when is it required?

In-house vs dedicated iOS developer

An in-house iOS developer builds deep, long-term product knowledge and becomes part of your culture, but hiring can take months, salaries and benefits are fixed costs, and losing that one person can stall your app. A dedicated developer from a partner can start sooner, has been vetted already and can be replaced or supplemented without a new hiring cycle.

Many companies combine both: an in-house lead who owns product direction and architecture, supported by dedicated developers who add capacity. Whatever the mix, protect continuity with documentation, shared code ownership and overlapping working hours, so knowledge stays with your product rather than with any single individual. For larger needs, a dedicated development team can include iOS, backend and QA roles together.