Principal Engineer - Blockchain Platform (React Native)
IO TECH SOLUTIONS LIMITEDHong Kong Island, Hong Kong SAR, Hong Kong
Posted March 5, 2026
Full Time
About the Company
IO Tech Solutions Limited is a leading IT talent and services provider that delivers end‑to‑end solutions—including IT staffing, consulting, payroll, and contracting—to clients across Hong Kong, Singapore, UAE, the UK, and Australia. With a combined 25 years of industry experience, the company builds strategic talent partnerships that give customers access to deep talent networks and real‑time market insights. IO Tech’s focus on aligning talent with business objectives ensures clients secure the most exciting opportunities in their respective markets. The firm’s reputation for inspiring opportunity and its global reach make it a distinctive partner for organizations seeking to accelerate growth through technology and talent excellence.
Job Description
We are looking for a Principal Engineer - Blockchain Platform (React Native) to join our team. As a key member of our engineering team, you will be responsible for architecting, developing, and maintaining high-performance React Native applications for iOS and Android.
Requirements
- 8+ years of professional mobile development experience (iOS and/or Android)
- 3+ years of hands-on React Native experience in production environments
- Proven experience as a Tech Lead or Senior Engineer owning mobile architecture and code quality
- Expert-level proficiency in TypeScript and JavaScript with strong clean-code principles
- Deep understanding of mobile app architecture patterns, performance optimization, and memory management
- Strong familiarity with native tooling (Xcode, Android Studio, Gradle, CocoaPods)
- Experience integrating REST APIs, authentication flows, and secure data handling
- Familiarity with mobile CI/CD pipelines, app store release processes, and versioning strategies