I’m a senior iOS engineer with over 6 years of experience delivering scalable, secure, and high-performance mobile apps. I specialize in Swift, Objective-C, SwiftUI, Swift Concurrency, and Combine, with a strong focus on iOS architecture, performance optimization, and CI/CD automation. I thrive in fast-paced environments and enjoy turning complex problems into clean, maintainable solutions. I collaborate closely with product, design, backend, legal, and QA teams to deliver stable releases, improve engineering standards, and drive impactful features from idea through production. I continually seek opportunities to apply new technologies and best practices to create high-quality, user-centric apps.…

Banghua Zhao

I’m a senior iOS engineer with over 6 years of experience delivering scalable, secure, and high-performance mobile apps. I specialize in Swift, Objective-C, SwiftUI, Swift Concurrency, and Combine, with a strong focus on iOS architecture, performance optimization, and CI/CD automation. I thrive in fast-paced environments and enjoy turning complex problems into clean, maintainable solutions. I collaborate closely with product, design, backend, legal, and QA teams to deliver stable releases, improve engineering standards, and drive impactful features from idea through production. I continually seek opportunities to apply new technologies and best practices to create high-quality, user-centric apps.…

Available to hire

I’m a senior iOS engineer with over 6 years of experience delivering scalable, secure, and high-performance mobile apps. I specialize in Swift, Objective-C, SwiftUI, Swift Concurrency, and Combine, with a strong focus on iOS architecture, performance optimization, and CI/CD automation. I thrive in fast-paced environments and enjoy turning complex problems into clean, maintainable solutions.

I collaborate closely with product, design, backend, legal, and QA teams to deliver stable releases, improve engineering standards, and drive impactful features from idea through production. I continually seek opportunities to apply new technologies and best practices to create high-quality, user-centric apps.

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Skills

Experience Level

Swift
Expert
Objective-C
Expert
JavaScript
Expert
Python
Expert
Java
Intermediate

Language

English
Fluent
Chinese
Fluent

Work Experience

Senior iOS Developer at Bank of New Zealand
February 1, 2026 - Present
Led end-to-end MFA platform migration (Entrust to PingOne), shaping architecture, delivery, and rollout strategy; achieved ~1M USD annual cost savings with zero customer disruption. Explored AI-driven internal feature ideas, delivering capability assessments and demos that influenced engineering direction. Raised team standards for scalable architecture and code quality; collaborated across product, design, backend, legal, and QA to deliver stable releases.
Senior iOS Engineer at MEGA The Privacy Company
May 1, 2023 - January 1, 2026
Led iOS development for MEGA Cloud Chat & Meeting and Password Manager using SwiftUI, MVVM, and Clean Architecture; achieved 90%+ domain-layer test coverage via Dependency Injection and mocks. Drove push notification campaigns increasing daily revenue by 50% and monthly revenue by 20%. Fixed 20+ memory leaks and 10+ hangs via Instruments; built NSCache-based in-memory image cache; reduced app launch time with os_signpost. Modularized 20+ domains/repositories into SPM modules; automated CI/CD with Fastlane + Jenkins; created a Swift SPM tool to sync localized App Store metadata with Transifex.
Senior Engineer at Huawei Technologies Co., Ltd
May 1, 2020 - May 1, 2023
Delivered three iOS fintech apps (KBZ Pay, telebirr, AsiaPay) with zero critical defects; migrated key modules from Objective-C to Swift. Authored Swift/Objective-C Style Guide; integrated SwiftLint SPM Plugin. Introduced MVVM/MVP/VIPER for baseline projects and refactored 6+ major modules using Clean Architecture. Used Firebase Crashlytics for performance monitoring; reduced crash rate by 1% by fixing top crashes. Managed App Store Connect releases, certificates, and provisioning profiles.
iOS Engineer Intern at Dedao
October 1, 2019 - January 1, 2020
Built reusable UI components (popup window, action sheet) in Swift for app modernization. Developed a Sketch-to-Swift code-generation plugin using CoreML to automate layout/style conversions. Refactored 'My Favorite' module using ReactKit and IGListKit.
Graduate Research Assistant at Purdue University
August 1, 2018 - May 1, 2019
Led full-stack development of Composites AI, an AI-driven platform for engineers to design and analyze composite materials and structures; developed an iOS app for SwiftComp™ and a REST API backend for property calculations.
Product Design FEA Intern at Apple Inc
January 1, 2018 - August 1, 2018
Developed FEA models at module and system levels to compare design configurations, predict potential failures, and identify root causes of design failure. Conducted reliability tests; automated analysis and data processing with MATLAB scripts; collaborated with cross-functional hardware teams.
MAPDL Testing Engineer Intern at ANSYS Inc
May 1, 2016 - August 1, 2016
Created 50+ APDL test scripts for new ANSYS Mechanical features and validated functionality with R&D teams.

Education

M.S. in Aeronautics and Astronautics Engineering, Structures & Materials at Purdue University
January 1, 2015 - December 1, 2016
B.E. in School of Astronautics, Spacecraft Design and Engineering at Beihang University
September 1, 2010 - June 1, 2014

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services
    paper Longevity Master

    A modern habit-tracking iOS app built with SwiftUI and GRDB, designed to help users build and maintain evidence-based habits that promote long-term health and longevity. Features anti-aging rating system, smart categories, and flexible scheduling.
    https://www.twine.net/signin