"Senior iOS / Mobile Engineer with 8+ years of experience building high-scale consumer apps (10M+ users). Strong background in mobile platform architecture, SDK development, real-time systems, and performance optimization, with hands-on experience integrating AI-powered services."

Yuyang Chen

"Senior iOS / Mobile Engineer with 8+ years of experience building high-scale consumer apps (10M+ users). Strong background in mobile platform architecture, SDK development, real-time systems, and performance optimization, with hands-on experience integrating AI-powered services."

Available to hire

“Senior iOS / Mobile Engineer with 8+ years of experience building high-scale consumer apps (10M+ users).
Strong background in mobile platform architecture, SDK development, real-time systems, and performance optimization, with hands-on experience integrating AI-powered services.”

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Work Experience

Senior iOS Engineer & Product Creator at Independent (Self-Founded)
June 1, 2025 - Present
Architected PlanFlow Meter, an offline-first productivity platform with rich widgets using SwiftUI; designed a custom synchronization engine (Core Data + CloudKit) that handles concurrent writes with 99% consistency. Engineered a high-performance AI inference engine for the AI Emoji converter using SwiftUI, CoreML and Float16 quantization to achieve 60 FPS real-time processing on mobile hardware. Directed the full product lifecycle, implementing CI/CD pipelines with Fastlane and GitHub Actions and automated XCTest suites to maintain a 99% crash-free rate in production.
Mac Desktop Client Engineer (Co-op) at Timeddomain Machine Learning
May 1, 2024 - August 31, 2024
Engineered core UI components for the Mac Desktop client for ACE Studio (AI singing voice generator, 200k+ users, 10M ARR) using Swift, bridging complex Python ML outputs with a native consumer-facing interface. Built preprocessing pipelines generating 1.1k+ hours of data, reducing inference latency by 20% via Python-based concurrency profiling.
Senior iOS Lead at Amazing Tech
October 1, 2022 - July 31, 2023
Led iOS architecture across 3 apps (1M+ users), reducing crash-rate by 15% and rendering improvements by 40%. Architected the canvas engine and hybrid editor SDK for XNote using PencilKit and WKWebView to enable high-performance drawing. Optimized iOS-Flutter integration for Flash Memory Card, reducing bridge latency by 20% and built a low-latency network layer for TalkAI real-time speech.
Senior iOS Developer & Serverless Developer at Pagoda
February 1, 2021 - June 30, 2022
Built Real-Time Logistics Module for China's largest fruit retail chain (10M+ users), integrating MapKit and CoreLocation to track carrier fleets with sub-second latency by using Swift. Developed a modular Swift PhotoManager SDK adopted by multiple internal teams, improving app startup time by 35% via lazy loading. Engineered a WebSocket-based live location service that handled high-concurrency position updates, ensuring smooth UI annotations. Implemented a serverless backend layer with Node.js for iOS / Android / Web parity, improving network performance by 22%.
iOS Developer at Shenzhen Dadi Yunwu
August 1, 2020 - January 31, 2021
Sole Owner of the Swift smart-hotel check-in app; integrated Flutter modules via Platform Channels, reducing cross-platform feature delivery time by 25%.
iOS Developer at Tencent
August 30, 2017 - May 29, 2020
Developed low-latency audio engines and interactive Swift prototypes for one of China's largest tech platforms; 3 prototypes were adopted into core products. Open-source contributions include MikuLive2D and UniversalPlayer.

Education

MSc in Big Data (Professional Program) at Simon Fraser University
September 1, 2023 - December 31, 2024
BSc Computer Science at University of California, Santa Barbara
September 1, 2013 - June 1, 2017

Qualifications

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Industry Experience

Software & Internet, Media & Entertainment, Professional Services, Transportation & Logistics, Retail