Ivan Antonov
iOS Engineer with a Master's degree in Computer Science and a focus on building complex, high-performance applications. I specialize in full-cycle development—from system architecture and technical design to production release and support.
My background combines deep technical expertise in the Apple ecosystem (Swift, SwiftUI, UIKit) with product leadership experience. I focus on writing clean, scalable code and building reliable systems that solve real business problems.
Professional Highlights
• Engineering Complexity: Architected and delivered a mission-critical enterprise VoIP solution for macOS, building a custom telephony engine with zero-crash stability in production.
• Product Leadership: Founded and led the development of a consumer iOS application, managing a cross-functional team (Android, Design) and overseeing the product from concept to App Store release.
• Global Experience: Experienced in working within international environments (Canada, UK, Ukraine), combining strong engineering discipline with effective cross-cultural communication.
Currently based in Cascais, Lisbon, I'm dedicated to building purposeful applications that solve real user problems while maintaining the polish and attention to detail that defines great iOS experiences.
Portfolio
Party Legend: Guess the Role
Social party game iOS application featuring 600+ character roles across 12 categories. Led product development from concept to App Store release, managing cross-functional team (Android, Design) while architecting a scalable MVVM system with 8 specialized manager singletons. Engineered sub-3-second launch times through aggressive preloading and memory-aware caching. Built custom high-performance video engine using AVFoundation with AVPlayerLooper for zero-latency seamless loops. Implemented StoreKit 2 monetization with multi-tier subscriptions, 3-day trial eligibility tracking, and receipt validation. Features smart game algorithms for duplicate-free role distribution, fair host rotation, and multi-criteria award system (Oscar/Globe/Razzie). Comprehensive Firebase Analytics integration across 40+ user flow events.
SoftSip
Enterprise VoIP call center platform for macOS with multi-operator support, API-driven authentication, and CRM integration. Features thread-safe call management, BLF (Busy Lamp Field) monitoring across multiple extensions, professional audio recording with cloud sync, and floating system-level notifications. Implements JWT token management, priority-based task queue, cursor-paginated call history, and NSLock-protected concurrent operations. Built with SwiftUI, Combine, and PortSIP SDK.
Party App
A production-ready native iOS social networking application built with SwiftUI and MVVM architecture. Features comprehensive event management, real-time chat functionality, GPS-based location discovery, and seamless Firebase backend integration. Demonstrates advanced iOS development skills including protocol-oriented programming, state management, and scalable feature organization.
Privacy
Website owner: Ivan Antonov, Portugal | Contact: 1van.chuck.job@gmail.com
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Projects shown for demonstration purposes only. Direct app links not provided due to NDAs. Last updated: August 2025.