Senior iOS Engineer • Swift • SwiftUI • KMP

Building fast, scalable, and delightful iOS experiences.

I’m Azharuddin Khan, an iOS Developer with 5+ years of experience building seamless mobile applications using Swift, SwiftUI, UIKit, Combine, Swift Concurrency, and scalable architectures like MVVM, MVI, and TCA.

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5+ yrs
iOS development experience
125K+
Daily active users supported
99.71%
Crash-free sessions maintained
Millions
App installs impacted

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About

I focus on performance, maintainability, and product impact. My recent work spans high-performance SwiftUI UIs, real-time chat, audio/video calling, push notifications, analytics, payments, and scalable app architecture.

Swift
SwiftUI
UIKit
Combine
Swift Concurrency
MVVM
MVI
TCA
KMP
Firebase

Skills

Strong foundations in native iOS, concurrency, architecture, cross-platform collaboration, and production-grade app development.

Swift
SwiftUI
UIKit
APNs
Combine
GCD
Memory Management
MVVM
MVC
MVI
Kotlin Multiplatform
Flutter
Firebase
Git
CocoaPods
Swift Package Manager
Xcode
REST APIs
Third-party SDKs

Experience

Built and optimized critical mobile features at scale, with a strong focus on product reliability, reactive systems, and performance.

Senior iOS Engineer

People Interactive
Oct 2023 — Present
  • Resolved production bugs using Firebase Crashlytics and event analysis, maintaining 99.71% crash-free sessions at 125K DAU.
  • Used Combine for WebSocket events, notifications, and timer streams to drive reactive UI updates and centralized business logic.
  • Handled concurrency with Swift Concurrency to avoid race conditions and thread issues.
  • Built high-performance SwiftUI UIs with complex animations and rendering optimizations.
  • Developed real-time chat, audio/video calling, VoIP push notifications, CallKit integration, and background sync flows.

iOS Engineer

HealthKart
Jan 2020 — Oct 2023
  • Developed and optimized core modules like Home and Product Detail for performance and scalability, achieving a 99.56% crash-free rate across 10–12K daily users.
  • Migrated legacy codebase from Objective-C to Swift, integrating SwiftUI and MVVM for a cleaner architecture.
  • Applied Delegate and Observer patterns for modular communication between components.
  • Improved responsiveness with GCD, DispatchGroups, and caching to reduce redundant API calls.
  • Integrated SDKs for payments, analytics, and health platforms including HealthKit, Google Fit, and Fitbit.

Projects

A snapshot of products and modules I’ve worked on across matchmaking, health, and commerce experiences.

Shaadi.com App Store

Worked on Swift, SwiftUI, Kotlin Multiplatform, and MVVM-based flows. Integrated chat, calling, in-app purchases, and fixed critical memory retain cycle issues across VoIP, CallKit, payments, analytics, deeplinks, and complex UI modules.

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VIPShaadi.com App Store

Built with Flutter and Bloc architecture. Implemented in-app purchase and registration flow experiences.

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HealthKart App Store

Worked on the complete app journey from architecture to final product using Swift, SwiftUI, and UIKit.

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MuscleBlaze App Store

Contributed to major modules including payments, product detail page, and analytics in Flutter.

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Achievements

Recognition earned through architecture leadership, critical delivery, and ownership on large-scale products.

★
Lead Engineer promotion

Promoted within a year for excellence in architecture and critical feature delivery.

✓
Scaled product impact

Worked on the Shaadi iOS app with millions of installs and 125K+ daily active users.

🏆
Employee of the Quarter

Awarded for leading the successful revamp of the HealthKart app.