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I'm Yu Zhao, an experienced iOS developer with 9 years in mobile application development. I specialize in native iOS development, cross-platform solutions, and Web3 technologies, delivering enterprise-grade apps with scalable architectures. I enjoy collaborating with distributed teams and guiding projects from concept to production, keeping a keen eye on performance, security, and maintainability. Over the years I’ve worked on health & wellness apps, blockchain-enabled wallets, and logistics platforms, always aiming to combine clean UI with robust data models and seamless user experiences. I’m passionate about learning new technologies and applying them to real-world problems, with a friendly, collaborative approach to teamwork and knowledge sharing.…I'm Yu Zhao, an experienced iOS developer with 9 years in mobile application development. I specialize in native iOS development, cross-platform solutions, and Web3 technologies, delivering enterprise-grade apps with scalable architectures. I enjoy collaborating with distributed teams and guiding projects from concept to production, keeping a keen eye on performance, security, and maintainability. Over the years I’ve worked on health & wellness apps, blockchain-enabled wallets, and logistics platforms, always aiming to combine clean UI with robust data models and seamless user experiences. I’m passionate about learning new technologies and applying them to real-world problems, with a friendly, collaborative approach to teamwork and knowledge sharing.

Yu Zhao

App Developer, Web Developer, Front-End Developer, +4

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I'm Yu Zhao, an experienced iOS developer with 9 years in mobile application development. I specialize in native iOS development, cross-platform solutions, and Web3 technologies, delivering enterprise-grade apps with scalable architectures. I enjoy collaborating with distributed teams and guiding projects from concept to production, keeping a keen eye on performance, security, and maintainability. Over the years I’ve worked on health & wellness apps, blockchain-enabled wallets, and logistics platforms, always aiming to combine clean UI with robust data models and seamless user experiences. I’m passionate about learning new technologies and applying them to real-world problems, with a friendly, collaborative approach to teamwork and knowledge sharing.…I'm Yu Zhao, an experienced iOS developer with 9 years in mobile application development. I specialize in native iOS development, cross-platform solutions, and Web3 technologies, delivering enterprise-grade apps with scalable architectures. I enjoy collaborating with distributed teams and guiding projects from concept to production, keeping a keen eye on performance, security, and maintainability. Over the years I’ve worked on health & wellness apps, blockchain-enabled wallets, and logistics platforms, always aiming to combine clean UI with robust data models and seamless user experiences. I’m passionate about learning new technologies and applying them to real-world problems, with a friendly, collaborative approach to teamwork and knowledge sharing.

Available to hire

I’m Yu Zhao, an experienced iOS developer with 9 years in mobile application development. I specialize in native iOS development, cross-platform solutions, and Web3 technologies, delivering enterprise-grade apps with scalable architectures. I enjoy collaborating with distributed teams and guiding projects from concept to production, keeping a keen eye on performance, security, and maintainability.

Over the years I’ve worked on health & wellness apps, blockchain-enabled wallets, and logistics platforms, always aiming to combine clean UI with robust data models and seamless user experiences. I’m passionate about learning new technologies and applying them to real-world problems, with a friendly, collaborative approach to teamwork and knowledge sharing.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Work Experience

Indie Developer at Keevo

January 1, 2025 - Present

Independent iOS health & wellness app (SwiftUI + HealthKit) with a modular drag‑reorder dashboard, local persistence and cloud sync using SwiftData/CoreData + CloudKit. Built a widget-like dashboard and core features for HRV, sleep, activity, hydration, tasks, journaling, and more.

Senior iOS Developer at ArcBlock

January 1, 2025 - October 10, 2025

Led iOS development for DID Wallet and Aistro; designed data layer for multi-wallet data management and transaction processing; implemented core blockchain features: digital signatures, transaction handling, Rollup Bridge, and DIDSpace. Built Aistro app integrating wallet infrastructure. Established automated CI/CD pipelines across repositories; coordinated release cycles across distributed teams.

Mobile Development Lead at Yunnan Tengjin Logistics Co., Ltd

December 1, 2020 - October 10, 2025

Evaluated Flutter adoption for cross-platform development; built utility library migrating iOS components to Flutter; developed enterprise modules for warehouse management system (WMS), B2B commerce, and inventory tracking; managed end-to-end development, deployment, and version control.

iOS Developer at 9ji.com

October 1, 2017 - October 10, 2025

Developed iOS coding standards and best practices documentation; redesigned iOS application architecture for scalability and performance; created shared component library and utility frameworks; delivered homepage redesign for major version release.

iOS Developer at Chengdu Longyuan Network Technology Co., Ltd

April 1, 2017 - October 10, 2025

Built a comprehensive user management system with authentication and profile management; executed UI overhaul and data migration strategy for 2.0 platform release; maintained app performance and implemented feature enhancements.

Indie Developer at Keevo

January 1, 2025 - Present

Independently designing and building an iOS health & wellness app featuring a modular, drag-reorder dashboard, SwiftUI-based UI, HealthKit integration, and local persistence with SwiftData/CoreData and CloudKit for sync.

Senior iOS Developer at ArcBlock

January 1, 2025 - October 10, 2025

Architected data layer for DID Wallet with multi-wallet data management and transaction processing; implemented core blockchain features (digital signatures, transaction handling, Rollup Bridge, DIDSpace); led Aistro app development and wallet infrastructure integration; established automated CI/CD workflows (GitHub Actions, Fastlane) and coordinated releases across multiple repos.

Mobile Development Lead at Yunnan Tengjin Logistics Co., Ltd

December 1, 2020 - October 10, 2025

Evaluated and adopted Flutter for cross‑platform development; built a utility library migrating iOS components to Flutter; developed enterprise modules for WMS, B2B commerce and inventory tracking; managed end-to-end development, deployment and version control.

iOS Developer at 9ji.com

October 1, 2017 - October 10, 2025

Established iOS coding standards; redesigned app architecture to improve scalability and performance; created shared component library and utilities; delivered homepage redesign for major version release.

iOS Developer at Chengdu Longyuan Network Technology Co., Ltd

April 1, 2017 - October 10, 2025

Built user management system (authentication, profile management); led major UI overhaul and data migration for 2.0 platform release; maintained performance and implemented feature enhancements.

Indie Developer at Keevo

January 1, 2025 - Present

Indie project focusing on iOS health and wellness with a modular, widget-like dashboard (SwiftUI) and HealthKit integration. Implemented local persistence and sync using SwiftData/CoreData and CloudKit, and designed a drag-and-reorder dashboard for a personalized user experience.

Senior iOS Developer at ArcBlock

January 1, 2025 - October 10, 2025

Led iOS development for DID Wallet & Aistro. Architected a multi-wallet data layer and transaction processing, implemented core blockchain features (digital signatures, transaction handling, Rollup Bridge, DIDSpace), and advanced CI/CD workflows (GitHub Actions, Fastlane) across multiple repositories with cross-team coordination.

Mobile Development Lead at Yunnan Tengjin Logistics Co., Ltd

December 1, 2020 - October 10, 2025

Evaluated and adopted Flutter for cross-platform development; built a utility library migrating iOS components to Flutter; developed enterprise modules for WMS, B2B commerce, and inventory tracking; managed end-to-end development, deployment, and version control.

iOS Developer at 9ji.com

October 1, 2017 - October 10, 2025

Defined iOS coding standards and best practices; redesigned app architecture for scalability and performance; created shared component library and utilities; delivered homepage redesign for major version release.

iOS Developer at Chengdu Longyuan Network Technology Co., Ltd

April 1, 2017 - October 10, 2025

Built a comprehensive user management system (authentication, profiles); led a major UI overhaul and data migration for the 2.0 platform release; maintained performance and implemented feature enhancements.

Indie Developer

January 1, 2025 - Present

Indie iOS developer focusing on Keevo, an iOS health & wellness app leveraging SwiftUI and HealthKit. Built a modular, widget-like dashboard with drag-and-reorder capabilities and implemented local persistence and sync using SwiftData/CoreData and CloudKit. Led UI/UX design decisions and contributed to product roadmap and feature delivery.

Senior iOS Developer at ArcBlock

January 1, 2025 - October 14, 2025

Architected the data layer for a multi-wallet DID Wallet supporting multi-wallet data management and transaction processing. Implemented core blockchain features such as digital signatures, transaction handling, Rollup Bridge, and DIDSpace. Developed the Aistro application from concept to completion, integrating wallet infrastructure components. Established automated CI/CD workflows using GitHub Actions and Fastlane across multiple repositories, and coordinated release cycles across development teams.

Mobile Development Lead at Yunnan Tengjin Logistics Co., Ltd

December 1, 2020 - October 14, 2025

Led mobile development efforts, evaluated and adopted Flutter for cross-platform development, and created a utility library by migrating iOS components to the Flutter ecosystem. Built enterprise modules for warehouse management, B2B commerce, and inventory tracking. Managed end-to-end development processes including deployment and version control.

iOS Developer at 9ji.com

October 1, 2017 - October 14, 2025

Defined and implemented iOS coding standards and best practices, redesigned application architecture for improved scalability and performance, created shared component libraries and utility frameworks, and delivered homepage redesigns for major version releases.

iOS Developer at Chengdu Longyuan Network Technology Co., Ltd

April 1, 2017 - October 14, 2025

Developed the 66play Gaming Video Platform, built a comprehensive user management system (authentication and profile management), executed a major UI overhaul and data migration for the 2.0 platform release, and maintained performance with feature enhancements.