Puneetpal Arneja.
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Swift / SwiftUI Development

Modern SwiftUI development for iOS 15+, iPadOS, and macOS apps. I build declarative, reactive UIs that are testable, accessible, and maintainable. Whether you're starting fresh with SwiftUI or migrating from UIKit, I deliver production-ready code with clean architecture patterns.

My approach emphasizes component-driven development, theming systems, and reusable design systems. I use Combine, async/await, and MVVM to manage data flow, and UIKit interop where needed for custom controls or legacy integrations.

What I Deliver

  • SwiftUI views with declarative syntax & animations
  • MVVM architecture with ViewModels & ObservableObject
  • Combine/async-await for reactive data flows
  • Design system with theming, colors, typography
  • UIKit interop (UIViewRepresentable, UIHostingController)
  • Accessibility audits & VoiceOver support
  • Unit tests for ViewModels & preview snapshots

Best For

  • New iOS 15+ app builds (SwiftUI-first)
  • UIKit → SwiftUI migration (incremental)
  • Rapid prototyping & MVP delivery
  • Cross-platform (iOS, iPadOS, macOS)
  • Design system implementation
  • Accessibility compliance (WCAG AA)

Why SwiftUI?

Faster Development

Declarative syntax reduces boilerplate by 40-60% vs UIKit. Live previews accelerate iteration. Built-in animations and transitions are concise and smooth.

Cross-Platform

Write once, deploy to iOS, iPadOS, macOS, watchOS, and tvOS with minimal platform-specific code. Shared views, ViewModels, and business logic.

Built-In Accessibility

Standard controls are VoiceOver-ready. Simple modifiers (.accessibilityLabel, .accessibilityHint) make custom views WCAG-compliant.

Future-Proof

Apple's primary UI framework going forward. Annual WWDC updates bring new APIs, performance improvements, and platform integrations (Widgets, App Intents, Live Activities).

UIKit Migration Strategy

Migrating from UIKit to SwiftUI? I follow an incremental approach that minimizes risk and keeps your app shippable at every step:

  1. Audit & Plan: Identify migration-friendly screens (settings, detail views, forms)
  2. Set Up Hybrid Architecture: Use UIHostingController to embed SwiftUI in UIKit navigation
  3. Migrate Small Screens First: Start with low-risk views to validate approach
  4. Refactor Data Layer: Introduce ObservableObject/Combine for reactive data flow
  5. Convert Complex Screens: Use UIViewRepresentable for custom UIKit controls
  6. Train Team: Knowledge transfer sessions, code reviews, SwiftUI best practices

Timeline: 2-4 weeks per major screen, depending on complexity. Can run in parallel with feature work.

Tech Stack & Patterns

SwiftUI Fundamentals

  • Views, Modifiers, ViewBuilders
  • State, Binding, ObservedObject, StateObject
  • EnvironmentObject for dependency injection
  • PreferenceKey for child-to-parent communication
  • ViewModifier for reusable styling

Architecture

  • MVVM with ViewModels (ObservableObject)
  • Repository pattern for data layer
  • Coordinator/Router for navigation
  • Combine publishers for async operations
  • Dependency injection via EnvironmentObject

Typical Outcomes

  • 40-60% less UI code vs UIKit (declarative syntax, built-in animations)
  • 2x faster iteration with live previews & hot reload
  • WCAG AA compliance out of the box for standard controls
  • Cross-platform code reuse: 70-80% shared code between iOS/iPad/macOS
  • Easier maintenance: Single source of truth, reactive updates, testable ViewModels

Frequently Asked Questions

When should I use SwiftUI vs UIKit?

Use SwiftUI for new features (iOS 15+), rapid prototyping, and declarative UIs. Stick with UIKit for complex custom layouts, low-level animation control, or legacy compatibility. Hybrid apps can use both—SwiftUI for new screens, UIKit for existing ones.

Can you migrate an existing UIKit app to SwiftUI?

Yes—I do incremental migrations. Start with small screens (settings, detail views), use UIViewRepresentable/UIViewControllerRepresentable for UIKit interop, refactor data flow to support both, and train your team on SwiftUI patterns.

How does SwiftUI handle accessibility?

SwiftUI provides built-in accessibility modifiers (.accessibilityLabel, .accessibilityHint, .accessibilityValue). Most standard controls are VoiceOver-ready out of the box. I audit all custom views for WCAG compliance.

Ready to build with SwiftUI?

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