Umar Muzaffer
Lead iOS Developer
- Pakistan
- 10 years experience
- Lead iOS Developer at Essentia Inc
Expertise
Primary: iOS
- C++
- App Store
- AI
- Accessibility
- Swift
About
I’m a Senior/Lead iOS Engineer with 10+ years of software engineering experience, including 8+ years specializing in iOS development and production mobile applications. I build scalable, reliable and user-focused mobile products across aviation, enterprise, GIS, e-commerce, ticketing, multimedia and AI-powered applications. My work spans the full product lifecycle from architecture and implementation to code reviews, testing, CI/CD, App Store releases and production support. My core expertise includes Swift, SwiftUI, UIKit, Objective-C, Swift Concurrency, async/await, Combine, RxSwift, MVVM, Clean Architecture, networking, offline-first systems, WebSockets, local persistence, mapping and mobile security. I have worked on complex production applications where reliability matters, including aviation operations, real-time communication, field data collection and applications that need to continue functioning with limited connectivity. I enjoy solving difficult engineering problems around architecture, concurrency, performance, synchronization and maintainability. Alongside professional iOS development, I build and ship my own AI-powered products. My recent work includes NexternAI, an AI interview preparation platform that generates job-specific preparation plans, mock interviews, coding challenges, voice-based interviews and ATS-focused resume tools. I’m also interested in practical AI/ML on Apple platforms, including Core ML, on-device intelligence and AI-assisted mobile experiences. Core Technologies • iOS: Swift, SwiftUI, UIKit, Objective-C, Cocoa Touch • Architecture: MVVM, MVC, MVP, Clean Architecture, Coordinator • Concurrency: Swift Concurrency, async/await, actors, Combine, RxSwift • Networking: REST APIs, WebSockets, Moya, Alamofire • Data: Realm, Core Data, local persistence, synchronization • Apple Frameworks: MapKit, Mapbox, AVFoundation, ARKit, Core ML • Security: Keychain, Biometrics, TLS/HTTPS, OAuth, secure data storage • Engineering: Git, Fastlane, Jenkins, GitHub Actions, CI/CD • AI/ML: AI-powered applications, on-device ML, intelligent mobile experiences • Leadership: Technical ownership, code reviews, project coordination and delivery I’m interested in Senior iOS, Lead iOS, Mobile Architect and technically focused engineering leadership opportunities where I can combine hands-on development with architecture and product ownership.
Links
Preferences
- Availability
- Actively looking
- Remote
- Remote, On-site, Hybrid
- Employment
- Full-time, Contract, Freelance
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