Available to hire
I’m an experienced iOS and Android developer who loves turning complex requirements into clean, reliable apps. I specialize in Swift, SwiftUI, Objective-C, Kotlin, and Jetpack Compose, and I’m proficient with testing automation using Appium, BrowserStack, and XCUITest. I enjoy delivering high-quality mobile products for media streaming, healthcare, education, and retail, and I’m always eager to contribute to innovative projects with a collaborative, hands-on approach.
Over the years I’ve worked across multiple industries, led or contributed to ground-up rewrites, and helped teams choose the right technology strategy. I stay curious, continuously learn new tools, and thrive in fast-paced environments where delivering great user experiences matters as much as solid architecture and maintainability.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Language
English
Fluent
Work Experience
Mobile Application Developer at TekSystems / Apple
April 1, 2025 - September 8, 2025Completed a short-term on-site contract in Culver City, ensuring project milestones were met and client expectations satisfied. Developed Swift/SwiftUI iPad/MacOS applications for internal use at Apple, utilizing Swift 6 Concurrency to improve performance, and implemented reactive patterns with Combine. Created a cross-platform iOS/macOS Swift package for internal use, integrating with internal frameworks. Authored automated tests with Xcode, Swift Testing, and XCUITest; integrated various third-party frameworks via Swift Package Manager to enhance capabilities and streamline development.
Mobile Application Developer at Wescom Credit Union
May 1, 2024 - September 8, 2025Contracted via Randstadt Technologies then converted to full-time; collaborated in a hybrid environment. Led a ground-up rewrite of Wescom mobile apps for iOS and Android using Swift 5 / SwiftUI and Kotlin Multiplatform / Jetpack Compose. Re-engineered apps to MVVM with reactive technologies (Combine, Kotlin Flow). Developed automated UI tests using Appium/BrowserStack (Python) and unit tests using XCTest and Kotlin Coroutines Test. Participated in research comparing Flutter, Kotlin Multiplatform, and Swift for Android as part of Wescom's mobile strategy.
iOS Application Developer at Diamond Web Services / Pluto TV
May 1, 2021 - September 8, 2025Telecommute contract; implemented new analytics features for PlutoTV iPhone/iPad and AppleTV apps. Developed and tested interactive video ads by observing the video player stream and ad tags; used Charles Proxy and Postman to verify data from web services. Participated in GitHub-based peer reviews with a large international team. Utilized ReSwift Unidirectional Data Flow in PlutoTV app development, ensuring efficient data management and app performance.
iOS Application Developer at Triple Crown Consulting / TradeStation
March 1, 2020 - September 8, 2025Completed a short-term telecommute contract; implemented an educational / brochure iPhone app using Swift / SwiftUI and Combine that introduced new clients of the FinTech company to stock investing. Integrated various third-party frameworks using CocoaPods, improving app functionality and user experience.
iOS Application Developer at SparkDigital + JobSpring / Hallmark Labs
November 1, 2019 - September 8, 2025Completed a short-term on-site contract in Santa Monica; developed a new utility iPhone app using RxSwift, Swift, UIKit, AlamoFire and Google Firebase. Integrated an open-source barcode scanning framework via CocoaPods, improving scanning capabilities. Implemented TestFlight deployment of the app to QA testers, streamlining the testing process.
iOS Application Developer at Randstadt Technologies / Kaiser Permanente
May 1, 2019 - September 8, 2025Completed a short-term contract; developed health-monitoring iPhone app using Swift, UIKit, HealthKit and Google Firebase. Integrated a 3rd-party open-source iOS Charts framework to implement data visualization. Implemented TestFlight deployment of the app to QA testers, streamlining testing and ensuring quality assurance.
iOS Application Developer at USA-UES
October 1, 2018 - September 8, 2025Contributed as a full-time employee; developed an educational iPad app for teaching English and culture to Chinese/Asian students. Built an online text/video meeting and collaboration iPad app for educators and students.
iOS Application Developer at Irvine Tech Corp / DirecTV - AT&T
April 1, 2018 - September 8, 2025On-site contract; developed analytics components for iPhone / iPad and AppleTV digital media apps (HLS). Implemented MPEG-DASH video playback event tracking for performance metrics; tested all software with XCTest. Unified multiple metrics suites into a single embeddable library; integrated older Objective-C frameworks (Adobe Analytics, Comscore, Conviva, Nielsen) to enhance data tracking. Participated in GitHub-based peer reviews with a large international team.
iOS Application Developer at WET Design
June 1, 2016 - September 8, 2025Developed in-house iPhone/iPad apps using Swift/UIKit; implemented experimental iBeacon/BLE/SocketIO/SceneKit/Core Location/Core Motion apps. Assisted in enhancing Atlassian Bamboo-based automated build processes for iOS apps built with Unity. Executed ad-hoc deployment of apps via on-site web server to ensure timely updates.
iOS Application Developer at McGraw-Hill Education / Engrade
October 1, 2015 - September 8, 2025Rewrote Engrade Pro iPad app from the ground up using Objective-C 2.0 and UIKit, enhancing performance and user experience. Integrated back-end PHP web services using non-standard REST, improving data exchange. Validated application code with XCTest, Charles Proxy, and Postman; used Doxygen/Graph Viz for documentation. Implemented TestFlight deployment to QA and beta testers.
iOS Application Developer at TekSystems / Disney Stores
December 1, 2013 - September 8, 2025On-site contract; hardened iOS Objective-C / UIKit app against crashes and leaks. Developed an internal AR camera using AVKit, Core Image and Core Graphics. Integrated ZbarSDK barcode scanner to streamline inventory. Added Core Location-based navigation features; implemented TestFlight deployment for QA/testing.
iOS Application Developer at HauteLook
October 1, 2011 - September 8, 2025On-site; hardened Objective-C / UIKit iPhone app. Developed the first HauteLook iPad app which received a 4.5 rating on the App Store; supported by a stable release and ongoing maintenance.
Mobile Application Developer at TekSystems / Apple
April 1, 2025 - September 8, 2025Completed a short-term on-site contract in Culver City, CA, ensuring project milestones were met and client expectations satisfied. Developed Swift/SwiftUI iPad/MacOS applications for internal use at Apple, utilizing Swift 6 Concurrency to enhance performance and reliability, and leveraged reactive technologies such as Combine. Built a cross-platform Swift package for internal use at Apple, integrating internal frameworks for seamless functionality. Created automated tests using Xcode, Swift Testing and XCUITest to validate code and user experience. Integrated various third-party frameworks via Swift Package Manager to enhance capabilities and streamline development.
Mobile Application Developer at Wescom Credit Union
May 1, 2024 - September 8, 2025Contracted via Randstad Technologies then converted to full-time; collaborated in a hybrid work environment across remote and on-site teams. Contributed to a ground-up rewrite of Wescom mobile apps for iOS and Android using Swift 5 / SwiftUI and Kotlin Multiplatform / Jetpack Compose. Re-engineered mobile apps to MVVM with reactive technologies such as Combine and Kotlin Flow. Developed automated UI testing scripts for Appium / BrowserStack using Python; developed unit tests using Swift XCTest and Kotlin Coroutines Test. Participated in research comparing Flutter, Kotlin Multiplatform and Swift for Android as part of Wescom's mobile strategy.
Mobile Application Developer at Diamond Web Services / Pluto TV
May 1, 2021 - September 8, 2025Completed telecommute contract; implemented new analytics features for PlutoTV iPhone / iPad and AppleTV apps. Developed and tested interactive video ads by observing the video player stream and reacting to ad tags; used Charles Proxy and Postman to verify data from web services. Participated in GitHub-based collaboration with a large international team; utilized ReSwift Unidirectional Data Flow in PlutoTV app development to ensure efficient data management and performance.
iOS / Swift Developer at Triple Crown Consulting / TradeStation
March 1, 2020 - September 8, 2025Completed a short-term telecommute contract; implemented an educational / brochure iPhone app using Swift / SwiftUI and Combine to introduce stock investing to new clients. Integrated various third-party frameworks via CocoaPods to enhance functionality and user experience.
iOS Application Developer at SparkDigital + JobSpring / Hallmark Labs
November 1, 2019 - September 8, 2025Completed a short-term on-site contract in Santa Monica; developed a new utility iPhone app using RxSwift, Swift, UIKit, AlamoFire and Google Firebase. Integrated an open-source barcode scanning framework via CocoaPods to improve scanning capabilities. Conducted TestFlight deployment to QA testers, streamlining the testing process.
iOS Application Developer at Randstadt Technologies / Kaiser Permanente
May 1, 2019 - September 8, 2025Completed a short-term contract; worked in a hybrid model (10% on-site, 90% telecommute) contributing to the health-monitoring iOS app using Swift, UIKit, HealthKit and Google Firebase. Integrated a 3rd-party iOS Charts framework to implement data visualization; deployed via TestFlight for QA testing.
iOS Application Developer at USA-UES
October 1, 2018 - September 8, 2025Contributed as a full-time developer to an educational iPad app teaching English language and culture to Chinese/Asian students; supported online text/video meetings and collaboration features for educators and students.
iOS Application Developer at Irvine Tech Corp / DirecTV - AT&T
April 1, 2018 - September 8, 2025On-site contract; developed analytics components for iPhone / iPad and AppleTV digital media apps (HLS). Implemented MPEG-DASH video playback event tracking; tested with XCTest; unified metrics suites into a single embeddable library; integrated older Objective-C frameworks (Adobe Analytics, Comscore, Conviva, Nielsen). Participated in GitHub-based peer reviews with a large international team.
iOS Application Developer at WET Design
June 1, 2016 - September 8, 2025Developed in-house iPhone / iPad apps using Swift / UIKit; implemented experimental iBeacons / Bluetooth LE / Socket.IO / SceneKit / Core Location and Core Motion apps; assisted in enhancing Atlassian Bamboo automated build process for iOS apps; performed ad-hoc deployment of apps via on-site web server to provide timely access to updates.
iOS Application Developer at McGraw-Hill Education / Engrade
October 1, 2015 - September 8, 2025Rewrote Engrade Pro iPad app from the ground up using Objective-C 2.0 and UIKit to improve performance and user experience; integrated back-end PHP web-services using non-standard REST; validated code with XCTest, Charles Proxy and Postman; documented code with Doxygen/GraphViz/LaTeX; managed TestFlight deployments to QA testers.
iOS Application Developer at TekSystems / Disney Stores
December 1, 2013 - September 8, 2025On-site contract; hardened iPhone and iPad Objective-C / UIKit apps against crashes and leaks; developed internal-use augmented reality camera using AVKit, Core Image and Core Graphics; integrated open-source ZbarSDK barcode scanner for inventory management; added location-based mapping and driving instructions; managed TestFlight deployments to QA testers.
iOS Application Developer at HauteLook
October 1, 2011 - September 8, 2025On-site full-time; hardened Objective-C / UIKit iPhone apps against crashes and leaks; implemented the first HauteLook iPad app which earned a 4.5 rating on the App Store.
Mobile Application Developer at TekSystems / Apple
April 1, 2025 - September 8, 2025Developed Swift/SwiftUI iPad/MacOS applications for internal Apple usage, utilizing Swift 6 Concurrency and reactive technologies such as Combine; built a cross-platform Swift package; developed automated tests with Xcode, XCTest and XCUITest; integrated third-party frameworks via Swift Package Manager.
Mobile Application Developer at Wescom Credit Union
May 1, 2024 - September 8, 2025Contracted via Randstadt Technologies then converted to full-time; contributed to ground-up rewrite of iOS and Android apps using Swift 5 / SwiftUI and Kotlin Multiplatform / Jetpack Compose; migrated mobile apps to MVVM with reactive tech (Combine, Kotlin Flow); authored automated UI tests with Appium/BrowserStack using Python; wrote unit tests in Swift and Kotlin; participated in technology strategy comparisons (Flutter, Kotlin Multiplatform, Swift) for Android.
iOS Application Developer at Diamond Web Services / Pluto TV
May 1, 2021 - September 8, 2025Implemented analytics features for PlutoTV iPhone / iPad and AppleTV apps; developed and tested interactive video ads; observed video player streams and ad tags; used Charles Proxy and Postman to verify data from web services; participated in GitHub-based peer reviews with a large international team; utilized ReSwift Unidirectional Data Flow.
iOS Application Developer at Triple Crown Consulting / TradeStation
March 1, 2020 - September 8, 2025Completed a short-term telecommute contract; implemented an educational / brochure iPhone app using Swift / SwiftUI and Combine that introduced potential clients to stock investing; integrated various third-party frameworks via CocoaPods, improving app functionality and UX.
iOS Application Developer at SparkDigital + JobSpring / Hallmark Labs
November 1, 2019 - September 8, 2025Developed a new utility iPhone app using RxSwift, Swift, UIKit, AlamoFire and Google Firebase; integrated an open-source barcode scanning framework via CocoaPods; implemented TestFlight deployment of the app to QA testers, streamlining the testing process.
iOS Application Developer at Randstadt Technologies / Kaiser Permanente
May 1, 2019 - September 8, 2025Developed health-monitoring iPhone app using Swift, UIKit, HealthKit and Google Firebase; integrated a 3rd-party open-source iOS Charts framework for data visualization; implemented TestFlight deployment to QA testers, ensuring quality assurance.
iOS Application Developer at USA-UES
October 1, 2018 - September 8, 2025Contributed to start-up as a full-time engineer; developed educational iPad app for teaching English and culture to Chinese/Asian students; developed online text/video meeting and collaboration iPad app for educators and students.
iOS Application Developer at Irvine Tech Corp / DirecTV - AT&T
April 1, 2018 - September 8, 2025Completed on-site contract; developed analytics components for iPhone/iPad and AppleTV digital media apps (HLS); implemented MPEG-DASH video playback event tracking; tested with XCTest; unified metrics suites into a single embeddable library; integrated older Objective-C frameworks; participated in GitHub-based peer reviews.
iOS Application Developer at WET Design
June 1, 2016 - September 8, 2025Developed in-house iPhone/iPad apps using Swift / UIKit; explored experimental features like iBeacons / Bluetooth LE / SocketIO / SceneKit / Core Location and Core Motion; assisted in enhancing automated build processes; deployed apps via on-site web server.
iOS Application Developer at McGraw-Hill Education / Engrade
October 1, 2015 - September 8, 2025Rewrote Engrade Pro iPad app from the ground up using Objective-C 2.0 and UIKit; integrated backend PHP web-services with REST; validated data with XCTest, Charles Proxy, and Postman; documented code with Doxygen/GraphViz; deployed TestFlight for QA and beta testers.
iOS Application Developer at TekSystems / Disney Stores
December 1, 2013 - September 8, 2025On-site contract; hardened Objective-C / UIKit apps against crashes and leaks; developed internal AR camera using AVKit, Core Image; integrated ZbarSDK barcode scanner; added location-based mapping; deployed via TestFlight for QA testers.
iOS Application Developer at HauteLook
October 1, 2011 - September 8, 2025Implemented first HauteLook iPad app; contributed to iPhone/iPad apps; leveraged Objective-C / UIKit; maintained high stability and user experience; performed early-career iOS development on-site.
Mobile Application Developer at TekSystems / Apple
April 1, 2025 - September 8, 2025Developed Swift/SwiftUI iPad/MacOS internal apps and a cross-platform Swift package for internal use at Apple. Utilized Swift 6 Concurrency and reactive technologies (Combine) to boost performance and reliability. Built automated tests with Xcode, Swift Testing, and XCUITest; integrated third-party frameworks via Swift Package Manager to enhance capabilities and streamline development.
Mobile Application Developer at Wescom Credit Union
May 1, 2024 - September 8, 2025Led a ground-up rewrite of iOS and Android apps using Swift 5 / SwiftUI and Kotlin Multiplatform / Jetpack Compose. Migrated to MVVM with reactive tech (Combine, Kotlin Flow); authored automated UI tests with Appium/BrowserStack and unit tests with XCTest and Kotlin. Participated in evaluating Flutter, Kotlin Multiplatform, and Swift for Android as part of strategy.
iOS Application Developer at Diamond Web Services / Pluto TV
May 1, 2021 - September 8, 2025Implemented analytics features for PlutoTV iPhone/iPad and AppleTV apps. Developed and tested interactive video ads by observing the video stream and ad tags; used Charles Proxy and Postman to verify web service data. Contributed to collaboration with a large international team and utilized ReSwift for unidirectional data flow.
iOS Application Developer at Triple Crown Consulting / TradeStation
March 1, 2020 - September 8, 2025Built an educational/brochure iPhone app using Swift/SwiftUI and Combine to introduce prospective clients to stock investing. Integrated multiple third-party frameworks via CocoaPods to enhance app functionality and user experience.
iOS Application Developer at SparkDigital + JobSpring / Hallmark Labs
November 1, 2019 - September 8, 2025Developed a new utility iPhone app using RxSwift, Swift, UIKit, AlamoFire; integrated an open-source barcode scanning framework via CocoaPods; deployed TestFlight for QA testers to streamline testing and feedback.
iOS Application Developer at Randstadt Technologies / Kaiser Permanente
May 1, 2019 - September 8, 2025Delivered a health-monitoring iPhone app using Swift, UIKit, HealthKit, and Google Firebase. Integrated a third-party iOS Charts framework for data visualization and conducted TestFlight deployments for QA.
iOS Application Developer at USA-UES
October 1, 2018 - September 8, 2025Contributed to an educational iPad app for teaching English language and culture, and a web/meeting collaboration iPad app for educators and students.
iOS Application Developer at Irvine Tech Corp / DirecTV - AT&T
April 1, 2018 - September 8, 2025Developed analytics components for iPhone/iPad and AppleTV digital media apps (HLS). Implemented MPEG-DASH video playback event tracking and integrated legacy Objective-C analytics frameworks. Validated code with XCTest and improved performance via a unified metrics facade.
iOS Application Developer at WET Design
June 1, 2016 - September 8, 2025Created in-house iOS apps using Swift/UIKit; explored iBeacon, Bluetooth LE, SocketIO, SceneKit, Core Location and Core Motion. Contributed to automating build processes and supported ad-hoc deployment to accelerate updates.
iOS Application Developer at McGraw-Hill Education / Engrade
October 1, 2015 - September 8, 2025Rewrote Engrade Pro iPad app in Objective-C/ UIKit; integrated back-end PHP web-services with non-standard REST; validated data with XCTest, Charles Proxy, and Postman; managed TestFlight deployments for QA and beta testers.
iOS Application Developer at TekSystems / Disney Stores
December 1, 2013 - September 8, 2025 Hardened iPhone/iPad apps against crashes and leaks; developed an internal AR camera using AVKit, Core Image and Core Graphics; integrated ZbarSDK for barcode scanning; added Core Location-based mapping and TestFlight deployments for QA.
iOS Application Developer at HauteLook
October 1, 2011 - September 8, 2025Built HauteLook iOS apps; implemented Objective-C / UIKit-based iPad apps and delivered release-ready solutions.
Education
Bachelor's degree at University of Southern California
January 1, 1992 - January 1, 1996Computer Engineering and Computer Science at University of Southern California
January 1, 1992 - January 1, 1996B.S. in Computer Engineering and Computer Science at University of Southern California
January 1, 1992 - January 1, 1996Bachelor of Science in Computer Engineering and Computer Science at University of Southern California
January 1, 1992 - January 1, 1996Qualifications
Industry Experience
Media & Entertainment, Healthcare, Education, Retail, Software & Internet, Computers & Electronics
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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