Portfolio•15+ Years Shipped Native Software

Apps & Shipped Work

A documented record of native iOS applications, performance turnarounds, and client infrastructure shipped to millions of users worldwide.

Track Record15+ Store Apps

SpecializationSwift, SwiftUI & UIKit

ScaleMillions of Users

ExperienceSince 2011

01 / Flagship Productions

Deep-Dive Architectures

2019 – PresentFreelance

Strong Workout Tracker

One of the world’s leading workout and strength-training apps on the App Store, trusted by millions of lifters worldwide. Long-term collaboration across major architectural milestones and core user-facing features.

SwiftSwiftUICombineActivityKitCore DataHealthKit

Strong 6.0 Refactoring (SwiftUI & Combine)

Contributed to the major codebase refactoring adopting SwiftUI and Combine reactive pipelines, culminating in the landmark version 6.0 release.

Live Activities & Dynamic Island Rest Timers

Implemented and released the Live Activity and Dynamic Island feature displaying active workout rest timers directly on the iOS Lock Screen and Dynamic Island.

xRM Formula Engine (Brzycki & Epley)

Improved x Repetition Maximum (xRM — estimated best weight performance for x repetitions of a given set) accuracy by adding support for both Brzycki and Epley formulas across Personal Records, Charts, and workout analytics.

Exercise List Caching, Filtering & Fuzzy Search

Improved Exercise List caching for faster loading performance, refined filtering and sorting methods, and helped develop fuzzy search with real-time character highlighting.

Customizable Themes, Diagnostics & Privacy Compliance

Developed customizable themes and alternate app icons, built local database diagnostic tools, and implemented GDPR and Apple Privacy Nutrition Label compliance.

App Store: 4.9 ★ (100k+ reviews)View on App Store →

2017 – 2019Beijing • Full-time

SELECT — Your Community

Cross-platform social community application connecting people with shared interests. Contributed to both the native iOS codebase (v1.32–1.37) and the complete React Native rewrite (v1.38+).

Swift 3.0React NativeObjective-CWebSocketMVVMFastlaneJenkins

Native iOS Phase (v1.32–1.37) — Build Time Cut from 70 min to 11 min (-84%)

Modularized the codebase using CocoaPods, refactored the architecture to MVVM with Dependency Injection, and configured Continuous Delivery using Fastlane and Jenkins.

React Native Rewrite (v1.38+) — WebSocket Protocol & Core Features

Defined and implemented the client/server WebSocket communication protocol, built the Multi Friend Selector (MFS) intelligent contact search and suggestion system, and built deep-link activated custom intro launch screens.

Native Objective-C Image Picker & Cross-Platform Flexbox UI

Built a custom Objective-C native image picker module bridged to React Native for optimal performance, and implemented responsive Flexbox screen layouts across iOS and Android.

Shipped to iOS App Store & Google PlayView on App Store →

Sole iOS Developer • Farfetch Group2016 – 2017

CURIO EYE

Companion iOS app for WeChat Official Account managers built from the ground up at CuriosityChina (a Farfetch company). Full ownership of the entire application from v1.0 to v1.1.5.

•Wrote the entire application from scratch in Swift and UIKit, owning all source code, resources, and architecture.
•Planned and executed bi-weekly release cycles, App Store Optimization (ASO), and contributed to product direction.
•Minimized app bundle size and resource footprint for fast downloads and smooth runtime performance.

CuriosityChina (A Farfetch Company)Beijing

Lead iOS Developer • EduTech2015

Talkmate

Language learning platform connecting students with native speakers for real-time conversation practice. Inherited a project in development for over a year and transformed it into a polished product (v1.0 to v2.1).

•Led a team of 3–4 iOS developers, managing task allocation, architecture decisions, and release planning.
•Completely rewrote and re-architected the entire codebase in Swift and UIKit for scalability and maintainability.
•Reduced app bundle size through resource optimization and drove App Store Optimization (ASO) and product decisions.

Beijing 200H EducationApp Store →

02 / Earlier Work & Agency Era

Paris (userADgents) & Foundations

Press, Media & High-Volume Commercial Apps (2012 – 2014)

Corse Matin per noï (v1.0–1.2)Digital Newspaper Reader (Universal iPhone & iPad)

Integrated MiLibris API v3 and v4 for enriched PDF viewing of daily and weekly publications and designed/developed the iPad version. Built for iOS 4.3+ with forward-thinking architecture that continued running on iOS 11 without major updates.

Objective-C / MiLibris

Le Trot — Cheval Français (v1.1)Horse Racing Information (iPhone & iPad)

Completely rewrote the source code for both iPhone and iPad versions for France's harness racing authority, ensured iOS 5+ compatibility, and fixed critical Apple Push Notification service (APNs) issues.

Objective-C / APNs

myPMU (v1.0)Horse Racing Information App

Developed within a 3-developer iOS engineering team, responsible for custom UI implementation and Core Data local database support.

App Store ↗

Belles Demeures (v1.0)Luxury Real Estate (iPhone & iPad)

Worked in a 3-developer team delivering full universal iPhone and iPad development and custom UI integration for prestige property listings.

App Store ↗

FFB — Déchets BTPConstruction Waste Management (iOS 7 & Windows Phone 8)

Developed both the iOS 7 and Windows Phone 8 clients, handling REST API integration, navigation and UI implementation, and Core Data cache management.

iOS 7 & WP8 / Core Data

Early Technical Foundations & Internships (2009 – 2011)

Android • C4M Prod (2011)Qobuz Music Streaming

Developed the Android music player interface, custom artist information section, and social sharing (Facebook, Twitter, SMS, Email) for tracks and playlists.

Java / Android SDK / Social APIs

Android • C4M Prod (2011)RATP Paris Transit

Updated the internal Paris transit schedule database and integrated the AdMob mobile advertising framework.

Java / Android / AdMob

Web Services • C4M Prod (2011)Zend Framework APIs

Maintained backend web services for major commercial accounts including Atol les opticiens, Volkswagen, and Digitick.

PHP / Zend Framework

Push Server • C4M Prod (2011)Pushmii Server

Handled server maintenance and created a PHP client library for deployment automation to simplify sending push notifications.

PHP / Push Notifications

Windows C# • C4M Prod (2011)Daiichi-Sankyo e-ADV

Created an HTML template generator for an e-ADV application using Microsoft C# and .NET 4.0 with automated Excel data extraction and formatting.

C# / .NET 4.0 / Excel

Web Frontend • Technivore (2009)CMS & XHTML Platforms

Upgraded Joomla 1.0 to 1.5 with DB migration for Association Pacamômes, hand-coded XHTML/CSS2 for Programme SIRS, and managed SPIP CMS for Faire du sport à Marseille.

XHTML / CSS2 & CSS3 / JS / Joomla / SPIP

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