I BUILD THE PART BETWEEN "GOOD IDEA" AND "IT'S LIVE."
I'm Sidi, a senior software engineer with experience across iOS, macOS, React Native, web applications, backend systems, AI products, and automation. I've shipped independent products and delivered large-scale client work—including a multi-million-DAU React Native modernization that raised crash-free rate from ~90% to ~99%. I care about architecture, performance, and the unglamorous work that makes systems reliable in production.
Based in Shenzhen, China
CAREER TIMELINE
- 2024–2026
Senior Software Engineer
EPAM Systems
Senior Software Engineer · enterprise mobile delivery
Delivered production work for large enterprise client programs in global banking and media/entertainment (client names under NDA). Led a ~3-month native-to-React Native upgrade for a consumer app with 4M+ daily active users: improved performance and raised crash-free rate from ~90% to ~99%.
- 2023–Present
Independent product work & AI systems
Better Call Sidi / independent practice
Software engineer · product builder · AI fixer
Shipped independent apps and tools (NoteLoom, Launch Studio, and more) alongside consulting-style product work
- 2022–2023
Graduate study in Artificial Intelligence
Illinois Institute of Technology
M.S. Artificial Intelligence
Formal AI training paired with continued product shipping
- 2018–2019
Core iOS development
Baby English / education product
Core iOS developer
Major version iterations on a live consumer education app
- 2016–2018
Mobile product engineering
NetDragon Websoft, Breo Technology, and related product work
iOS / mobile engineer
Production app delivery across product teams
- 2012–2016
Foundation years
Early independent and collaborative projects
Emerging iOS developer
First independent App Store ship (iHeart) and professional foundation
WORKING STYLE
Independent builder. Reliable collaborator. Always shipping.
- ✓Comfortable owning ambiguous problems
- ✓Able to collaborate across product, design and engineering
- ✓Prefer practical architecture over fashionable complexity
- ✓Communicate risks early
CREDENTIALS
- Master's in Artificial Intelligence — Illinois Institute of Technology (2024)
- Claude Certified Architect – Foundations (CCAF) · 959/1000
- Representative domains: Apple platforms, React Native, product engineering, applied AI, automation
- Download the latest résumé (PDF): Résumé (EN) · Résumé (ZH)
PERSONAL NOTES
Away from code, I'm usually watching anime, playing games, experimenting with hardware, or building something that began as "this should be easy."
© 2026 Sidi Li. All rights reserved. | Built with ❤️ and determination. | Thanks for visiting!