08/08/2026 updated
100 % available
Sr Mobile Developer | 14y | Exploring applied AI and eval
Doncaster, United Kingdom
Only remote
MSc Information Systems ManagementAbout me
Senior Mobile Developer with over 14 years of experience building and scaling high-impact commercial applications serving millions of users in multiple domains, including government services and TV streaming. Experienced in modern patterns, architectures and AI-assisted development workflows.
AI AgentsArchitectureTest AutomationMobile Application DevelopmentUikitSwiftuiConcurrencySwift (Programming Language)
iOS Development (Swift / SwiftUI / UIKit)
Extensive expertise in building and scaling high-impact iOS applications using Swift, SwiftUI, and UIKit, including offline-first architectures, on-device data isolation, and modern Swift 6 features.
AI-Assisted Development & LLM Integration
Hands-on experience with AI-assisted development workflows, local LLM integration, agentic AI workflows, Swift LLM evaluation, and prompt/harness engineering using tools such as Claude, Codex, Cursor, and Devin.
CI/CD & Test Automation
Proven track record of building CI/CD pipelines using Jenkins, Fastlane, and GitHub Actions, as well as implementing TDD and automated testing strategies including CI testing with Appium.
Combine / Concurrency
Solid knowledge of reactive programming with Combine and Swift Concurrency for building responsive and scalable mobile applications.
MVVM-C Architecture
Application of the MVVM-C design pattern to structure iOS codebases for maintainability, testability, and scalability.
SwiftData / Core Data
Experience with local data persistence using SwiftData and Core Data for offline-first mobile application development.
React.js / TypeScript
Contribution to React.js web platform development and exploration of TypeScript for front-end web applications.
Android Development (Java / Objective-C)
Background in maintaining and scaling Android and iOS applications using Java and Objective-C across multiple high-traffic commercial products.
RESTful APIs
Integration of RESTful APIs in mobile and web applications to connect front-end clients with back-end services.
Foundation Model
Familiarity with Foundation Model frameworks as part of the iOS AI development stack.
Extensive expertise in building and scaling high-impact iOS applications using Swift, SwiftUI, and UIKit, including offline-first architectures, on-device data isolation, and modern Swift 6 features.
AI-Assisted Development & LLM Integration
Hands-on experience with AI-assisted development workflows, local LLM integration, agentic AI workflows, Swift LLM evaluation, and prompt/harness engineering using tools such as Claude, Codex, Cursor, and Devin.
CI/CD & Test Automation
Proven track record of building CI/CD pipelines using Jenkins, Fastlane, and GitHub Actions, as well as implementing TDD and automated testing strategies including CI testing with Appium.
Combine / Concurrency
Solid knowledge of reactive programming with Combine and Swift Concurrency for building responsive and scalable mobile applications.
MVVM-C Architecture
Application of the MVVM-C design pattern to structure iOS codebases for maintainability, testability, and scalability.
SwiftData / Core Data
Experience with local data persistence using SwiftData and Core Data for offline-first mobile application development.
React.js / TypeScript
Contribution to React.js web platform development and exploration of TypeScript for front-end web applications.
Android Development (Java / Objective-C)
Background in maintaining and scaling Android and iOS applications using Java and Objective-C across multiple high-traffic commercial products.
RESTful APIs
Integration of RESTful APIs in mobile and web applications to connect front-end clients with back-end services.
Foundation Model
Familiarity with Foundation Model frameworks as part of the iOS AI development stack.
Experience
Professional experience10+ years
Freelancer since2025
Languages
ChineseNative speakerEnglishFluent
Project history
- Built a privacy-first AI chat application for a Series A-funded US startup, implementing on-device data isolation and privacy features.
- Developed an AI-powered study web app that generates structured MCQs and mock tests from uploaded materials.
- Exploring React, applied LLM dev and evaluation. Ranked #238/1983 in HackerRank Orchestrate in Aug 2026, a 24hr applied LLM system dev and evaluation challenge.
- Expanded expertise in Swift 6, modern SwiftUI, local LLM integration, AI-driven iOS runtime testing, agentic AI workflows, and prompt/harness engineering.
Core Product:
- Silo - Private AI Chat (iOS) - Privacy-first AI chat application with on-device data isolation and tool features.
- Led iOS development, launched and scaled two iOS apps for offline-first NFT inventory management and art dealer inventory management.
- Concurrently studied and contributed to React.js development for an NFT trading web platform.
Core Products:
- Verse Collect (iOS) - Offline-first NFT inventory manager supporting multiple wallets and blockchains.
- Views Art (iOS) - Art inventory app for dealers to manage their inventory and client requests, plus generate bespoke PDFs.
- Verse.works (React.js) - Web platform for NFT art collection, exhibitions, trading, auctions, and secondary marketplace transactions.
- Led the mobile development team in maintaining and scaling MyObservatory, Hong Kong’s official weather app.
- Built automated CI/CD pipelines using Jenkins to improve development efficiency.
Core product:
- MyObservatory (iOS + Android) - HK's 1st weather app developed by the Hong Kong Observatory, providing official weather information, forecasts and warnings for citizens (11M+ downloads).