Hire senior Swift developers for iOS and Apple platforms
Senior Swift engineers who build and maintain iPhone, iPad and Apple Watch apps with SwiftUI and modern concurrency, inside your team on US hours.
By the Ryz Labs team · Updated October 2026
Hiring Swift developers through Ryz gets you senior engineers who know Swift deeply, from value semantics to structured concurrency, and who ship apps that pass review and stay stable. They are in the top 1% of the engineers we interview, they embed in your mobile team, and they work within an hour of US time zones.
What our Swift developers work on
Most Swift work is app development for Apple platforms, but the language also runs on servers and in shared packages. Our engineers work with SwiftUI and UIKit, Combine, SwiftData and Core Data, XCTest and Swift Testing, Swift Package Manager, Xcode Cloud or Fastlane, and frameworks like HealthKit, StoreKit 2 and MapKit. Common work:
- New iOS and iPadOS apps built in SwiftUI with a clear architecture such as MVVM or The Composable Architecture.
- Gradual migration of UIKit and Objective-C codebases to Swift and SwiftUI, screen by screen.
- Apple Watch, widgets, Live Activities and App Clips that extend an existing app.
- Subscriptions and in-app purchases with StoreKit 2, plus receipt validation on the server.
- Offline-first apps with local persistence and sync, and background tasks that respect battery limits.
- On-device machine learning with Core ML and Vision, or apps that stream responses from model APIs.
- Shared Swift packages and modular app structures that speed up builds for larger teams.
Skills we vet for
- Swift language depth. Value versus reference types, protocols with associated types, generics, opaque types and result builders.
- Structured concurrency. async/await, task groups, actors, MainActor isolation, Sendable checking and the Swift 6 strict concurrency mode.
- SwiftUI. View identity and lifetime, state ownership with @State, @Observable and environment, and avoiding needless redraws.
- UIKit interop. Hosting SwiftUI in UIKit and the reverse, plus maintaining large UIKit screens that are not worth rewriting.
- Memory management. ARC, retain cycles in closures, weak and unowned references, and Instruments for leaks.
- Networking and data. URLSession with async APIs, Codable, caching, and SwiftData or Core Data migrations.
- Testing and release. Unit and UI tests, snapshot testing, TestFlight, phased releases and crash reporting.
- App Store rules. Review guidelines, privacy manifests, permission prompts and App Tracking Transparency.
How we vet Swift developers
Recruiters source Swift engineers with apps in the App Store and ask what each person built, maintained and released. ARC, our in-house system, ranks the pipeline. Candidates complete a structured NTRVSTA AI interview on Swift, concurrency and app architecture. Recruiters review candidates before and after that interview and give you a curated shortlist. AI scores are advisory, and humans make every decision.
Sample interview topics
- Turning on Swift 6 strict concurrency produces hundreds of Sendable warnings. How do you plan the migration without stopping feature work?
- A SwiftUI list stutters when scrolling and the view body runs far more often than expected. How do you find out why?
- Explain a retain cycle created by a closure stored on a view model, and how you would find it in Instruments.
- Design subscription handling with StoreKit 2 so that a user who buys on iPhone sees access on iPad, and refunds are handled correctly.
- When does an actor protect you from data races, and what is actor reentrancy? Give an example where it causes a bug.
Ways to hire Swift developers
| Option | Best for | Trade-offs |
|---|
| Freelance marketplace | A prototype app or a single feature | App quality varies widely. Long-term maintenance and App Store ownership can be a problem. |
| Staffing or recruiting agency | Hiring several mobile roles at once | Swift experience on a resume may be mostly UIKit from years ago. Screening is often light. |
| In-house recruiting | A permanent mobile lead | Senior iOS engineers are in demand, so hiring can take months. |
| Ryz Labs staff augmentation | Adding senior Swift engineers to your existing mobile team | You own the roadmap and release process. Works best with an app already in production. |
| Ryz Labs dedicated team | A new app or major rebuild delivered by one team, with design and backend support | A tech lead, iOS engineers and other disciplines as needed, scoped together with a plan. |
Ryz is not the right fit if you want to hire someone from a marketplace for a few hours without a conversation, or if you need coverage in European or Asian time zones. If you want engineers on your own payroll, use an employer-of-record partner.
Why hire Swift developers from Latin America
Latin America has a strong mobile culture, and many senior iOS engineers there have built consumer apps for US startups and regional fintech, retail and delivery companies. They have dealt with real App Store reviews, crash spikes and older devices, not only simulators.
Mobile releases involve design reviews, QA passes and quick decisions when App Review rejects a build. Our Swift developers work within an hour of US time zones, so they can respond to a rejection, fix it and resubmit before your day ends. They work in English and join your product rituals.
Related roles
FAQ
Do your Swift developers work in SwiftUI or UIKit?
Both. Most production apps mix the two, and our engineers know how to add SwiftUI to a UIKit app without a risky rewrite.
Can they write server-side Swift?
Some have used Vapor or Hummingbird. Most Swift backends still use other languages, so tell us your setup and we match accordingly.
What does it cost to hire Swift developers?
Custom quote, scoped per team. You get a plan, a price and the names of the people who would do the work before you sign.
How do the contract and working hours work?
You sign one contract with Ryz. Our engineers work with us as independent contractors, and we handle paying them. They work within an hour of US time zones.
Questions we didn't answer? Email info@ryzlabs.com.