Hire iOS App Developers

Need to hire iOS app developers who feel like in-house teammates from day one? We place senior Swift and SwiftUI engineers through a nearshore staff augmentation model designed around your release cadence, not ours.

Every iOS engagement starts with a 90-minute discovery call where our practice leads review your architecture, backlog priorities, and team dynamics. From there we shortlist developers who have solved similar problems—subscription monetization, offline-first storage, accessibility compliance, complex animations—and have them pairing with your engineers inside of two weeks.

  • Average ramp-up: 5–10 business days to first merged PR
  • Nearshore overlap with US Eastern, Central, and Pacific time zones
  • Roles from individual contributors to embedded tech leads and QA specialists

Maintaining a legacy Objective-C codebase alongside Swift? Our Objective-C staff augmentation specialists stabilize mature iOS and macOS apps while supporting incremental Swift migration. For deeper Swift-language expertise—Vapor APIs, async/await adoption, SwiftData—see our dedicated Swift staff augmentation service.

Hire iOS developers – team with iOS icons

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iOS Staff Augmentation Services

The right iOS skills, exactly when your roadmap demands them.

Our engineers collaborate daily with your product, design, and backend teams. They attend standups, participate in retros, and treat your backlog as their own. The goal isn't to hand off features—it's to build a shared understanding so every release is stable and every pull request raises the bar.

We stay aligned with Apple's evolving platform by following the latest iOS developer documentation and community best practices discussed on the Apple Developer Forums. That means your augmented engineers arrive ready for new SDK releases, privacy changes, and App Review updates.

Feature Delivery

  • SwiftUI & UIKit screen development
  • Combine & async/await networking
  • Core Data, SwiftData, CloudKit
  • In-app purchases & StoreKit 2

App Modernization

  • UIKit-to-SwiftUI migration
  • Architecture refactoring (MVVM, TCA)
  • Privacy & App Tracking Transparency
  • iOS SDK updates & deprecation cleanup

Quality & Release Ops

  • XCTest & XCUITest suites
  • CI/CD (Xcode Cloud, Fastlane, Bitrise)
  • TestFlight & App Store submissions
  • Crash analytics & performance dashboards

Product Mindset

  • Accessibility & VoiceOver audits
  • Localization & right-to-left support
  • Feature flag strategies & staged rollouts
  • UX suggestions backed by analytics

iOS logo for staff augmentation

iOS Roles We Staff

From individual contributors to full squads.

iOS Developers

Senior engineers fluent in Swift, SwiftUI, Combine, and UIKit. They own feature delivery end-to-end: design handoff, implementation, unit tests, code review, and App Store release. Experienced with modular architectures (SPM, workspace-based), dependency injection, and protocol-oriented design.

iOS Tech Leads

Architects who define module boundaries, review PRs across the team, coordinate delivery across squads, and mentor junior engineers. They write ADRs, maintain tech-debt backlogs, and present trade-offs to product stakeholders so decisions are transparent.

QA Automation

Test engineers who build and maintain XCTest and XCUITest frameworks, snapshot testing pipelines, and crash-rate regression alerts. They integrate with CI/CD so every PR gets an automated verdict before merging.

DevOps for Mobile

Engineers who set up Xcode Cloud, Fastlane, or Bitrise pipelines for automated builds, testing, and TestFlight distribution. They configure signing, provisioning profiles, and environment management so your team never struggles with "it works on my machine."

Scrum Masters & Delivery Managers

Product-minded coordinators who run sprint ceremonies, track velocity, remove blockers, and ensure clear SLAs. They bridge the gap between your iOS squad and leadership with weekly dashboards and release reports.

How We Work With Your Team

A four-step playbook refined over dozens of iOS engagements.

1

Discovery & Alignment

We review your iOS architecture, CI/CD toolchain, release cadence, and team conventions. No boilerplate intake forms—just a technical conversation with our practice leads.

2

Profile Shortlist

We present 2–3 vetted candidates with recorded tech interviews, code samples from real projects, and compatibility notes. You pick who fits best.

3

Embedded Onboarding

Joint onboarding plan covering coding standards, PR etiquette, branching strategy, and tooling. The developer ships a real PR within the first sprint.

4

Delivery & Iteration

Shared velocity metrics, weekly retros, continuous knowledge transfer, and documented exit plans so your internal team retains all context.

When Teams Typically Bring Us In

  • Accelerating a SwiftUI migration while maintaining production UIKit screens
  • Backfilling iOS capacity before a critical App Store launch or WWDC-related update
  • Standing up dedicated QA automation to reduce regression cycles
  • Adding compliance-aware engineers for HIPAA, SOC 2, or PCI-DSS regulated apps
  • Covering parental leave, sabbaticals, or seasonal demand spikes without long-term headcount

Case Study: Healthcare Patient Portal

A US-based healthcare platform needed to ship a HIPAA-compliant iOS patient portal before its partnership with a national insurance carrier went live. Their two internal iOS engineers were busy maintaining the provider-facing app, so leadership looked for an augmentation partner that could own the patient experience end-to-end.

Engagement Snapshot

  • Duration: 6 months
  • Team: 2 senior iOS engineers, 1 QA automation, 1 part-time tech lead
  • Stack: SwiftUI, Combine, HealthKit, Core Data with CloudKit sync
  • Timezone: EST overlap, daily standups at 10 AM ET

What We Delivered

  • Built 38 SwiftUI screens including appointment scheduling, secure messaging, and lab results
  • Integrated HealthKit for vitals tracking and medication reminders
  • Implemented biometric auth, encrypted local storage, and HIPAA-compliant audit logging
  • Set up Fastlane CI/CD with automatic TestFlight distribution after each merge

Business Impact

  • App approved on first App Review submission—zero rejections
  • 4.8-star rating within 60 days of launch (1,200+ reviews)
  • Patient digital adoption reached 41% in the first quarter, beating the 25% target
  • Crash-free rate held at 99.7% across all production builds
"We needed iOS engineers who could navigate healthcare compliance without slowing feature velocity. The Siblings team delivered a production-ready patient app in six months, passed our security audit on the first attempt, and left our internal devs with a codebase they actually enjoyed working in."
Director of Engineering, Healthcare Platform

See more delivery stories on our case studies hub.

Frequently Asked Questions

Typically 5 to 10 business days. We align on goals, present vetted profiles with recorded tech interviews, run a joint onboarding plan, and the developer starts shipping code in the first sprint. For urgent needs we've ramped engineers in as few as five days.

Yes—most of our engagements involve existing products. We stabilize releases, reduce crash rates, refactor legacy UIKit to SwiftUI, improve performance, tackle tech debt, and prepare apps for the next major iOS version. We ramp up by studying your codebase, CI/CD pipeline, and past App Store Connect analytics.

Definitions of done, mandatory peer code reviews, automated XCTest and XCUITest suites, CI/CD pipelines with TestFlight distribution, crash analytics monitoring, and weekly demo sessions with stakeholders. We also run SwiftLint and static analysis on every PR so issues are caught before merge.

Swift, SwiftUI, UIKit, Combine, async/await structured concurrency, Core Data, SwiftData, CloudKit, Core ML, ARKit, HealthKit, StoreKit 2, MapKit, and Vapor for server-side Swift. We also support Objective-C maintenance and phased migration to Swift.

We support both. Some clients bring us in for a three-month sprint boost before an App Store launch, while others run multi-year embedded partnerships. You can scale up or down each quarter without renegotiating your agreement.

Complementary Services

Our iOS staff augmentation practice connects naturally with the rest of the Siblings Software delivery ecosystem:

General staff augmentation for broader engineering needs beyond iOS.

Full app delivery teams when you need product ownership beyond augmentation.

Android staff augmentation to ship both platforms in parallel.

OUR STANDARDS

Staff augmentation for iOS, done right.

We place iOS engineers who own outcomes, communicate clearly, and leave your codebase better than they found it. Expect pragmatic decisions, clean architecture, and steady delivery—not checkbox compliance.

We document context, write ADRs, record Loom walkthroughs for complex PRs, and run office-hours sessions with our practice leads whenever Apple ships something new. It's how we make sure every engagement stays collaborative, not transactional.

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