j
jasonhzg

Zigen

@jasonhzg

FullStack Developer Web Mobile Apps AI App Developer

China
English, Chinese
About me
Full-stack dev from Shenzhen, China (UTC+8, flexible US/EU overlap). 2 apps live on the App Store (US + China), built solo end-to-end: SwiftUI client, FastAPI backend, multi-agent AI engine, subscriptions with server-side verification. I build: AI agents & multi-agent systems (Python), iOS apps with AI features (Swift), App Store rejection rescue, Claude Code workflow setup. 12 yrs shipping software; 13 merged PRs in major open-source AI repos. Every delivery: full source code + docs. Message me before ordering — honest scoping, always.... Read more

Skills

j
jasonhzg
Zigen
Offline • 

See my services

AI Chatbot Development
I will build production ai agents and multi agent systems with python
From$100 / projectMore details

Portfolio

Work experience

StockAgents_— 13 AI Agents Analyze One Stock. One Verdict.

Senior iOS Developer and Founder

StockAgents — 13 AI Agents Analyze One Stock. One Verdict. • Self-employed

Jan 2021 - May 2026 • 5 yrs 4 mos

Founded and ran an indie software studio. Shipped 2 apps to the App Store (US + China regions) solo end-to-end: SwiftUI iOS client, FastAPI backend, multi-agent AI engine, subscription IAP with server-side receipt verification. Also delivered freelance projects: AI agents, workflow automation, App Store review rescue. 13 merged PRs in major open-source AI frameworks.

Apple

iOS Developer (Independent)

Apple • Self-employed

Jul 2019 - Jan 2021 • 1 yr 6 mos

Independently designed, developed and shipped Haibao Video, an entertainment iOS app available on the App Store. Owned the full product cycle: SwiftUI interfaces, video playback pipeline, In-App Purchases with server-side receipt verification, and App Store submission. Grew to thousands of downloads with a 4.6-star rating while maintaining a 100% crash-free session rate.

iOS Lead - Inclusive Finance

Minsheng • Full-time

Dec 2015 - Dec 2018 • 3 yrs

Led iOS development for Minsheng's inclusive-finance lending app serving over 1 million registered users and 200,000 daily actives. Owned core modules across the full SDLC: architecture, onboarding, KYC, and liveness-detection SDK integration. Cut jank complaints by 90% through profiling-driven optimization (Instruments, frame drops, memory), and reduced codebase size by 30% via componentization and Swift migration. Coordinated a 6-engineer feature squad, ran code reviews, and shipped 24 releases on time. The app won the company's Best Project Award for three consecutive years.