Available to hire
I am Horatio Boothe, a Senior Mobile Developer with more than ten years of hands-on experience delivering iOS and Android applications across healthcare, education, and media industries. I specialize in Swift, Objective-C, Kotlin, and cross‑platform frameworks, guiding projects from concept to production with a focus on performance, accessibility, and user-centric design.
I enjoy solving complex problems, mentoring teams, and aligning product goals with engineering excellence. I value measurable impact, robust testing, and inclusive experiences for all users.
Skills
Language
English
Fluent
German
Beginner
Work Experience
Lead Mobile Engineer – Evergreen Wellness App at Dartmouth College
May 1, 2025 - PresentLeading the end-to-end development of the Evergreen iOS application, focusing on mood-responsive interventions to promote wellness among students. Architecting and implementing UI with Swift, Objective-C, and SwiftUI, integrating RESTful APIs, and ensuring responsive performance across devices. Collaborating with UX designers and mental health experts to translate requirements into technical specifications, with a strong emphasis on accessibility and privacy. Implemented features such as real-time mood tracking, personalized content delivery, and secure data storage, while maintaining Agile practices and CI/CD workflows.
Lead Mobile Engineer at Spectrum / Charter Communications
April 1, 2025 - September 16, 2025Led cross-platform development of the Spectrum Access app (iOS and Android) using Flutter, Swift, Kotlin, and Xcode. Drove the transition from an iOS-only solution to a shared Flutter codebase, enabling inclusive accessibility features and voice-activated search integrations (Siri and Google Assistant). Maintained ~75% test coverage, designed a Bitrise-based CI/CD pipeline for multi-environment builds, and integrated Google Crashlytics for crash analytics. Managed app distribution via TestFlight, Firebase, and other channels; mentored a team of four; co-inventor of two patents related to audio auto-resynchronization; received accessibility awards.
iOS Engineer at Kaiser Permanente
March 1, 2020 - September 16, 2025Developed and optimized the KP Workforce and Case Pick iOS apps for expense tracking and barcode scanning (Swift, Xcode). Integrated Scandit barcode scanning to streamline inventory workflows and delivered the KP Card app featuring push notifications and speech recognition. Implemented drag-and-drop attachments; built reusable components via Swift protocols; collaborated with backend teams to redesign and validate JSON payloads using Postman.
Senior iOS Developer at Jack Henry & Associates
October 1, 2018 - September 16, 2025Led modernization of a large banking app from Objective-C to Swift, implementing secure authentication flows (Touch ID/Face ID, password management) and critical features such as Zelle payments and PDF statements. Implemented an analytics layer with Google Analytics, modularized the app into frameworks for scalability, built a CI pipeline with Jenkins for universal, iPhone-only, and iPad-only builds, and developed automated UI tests (KIF and XCTest).
iOS Developer at TCS – Contractor for Sprint (T-Mobile)
April 1, 2014 - September 16, 2025Contributed to Sprint’s Connected Vehicle Program (CVP), enhancing the UConnect Access and Fiat Access iOS apps. Developed features enabling remote start/stop, speed lock, and shutdown capabilities for Chrysler, Jeep, Dodge, and Ram vehicles via mobile interface. Implemented MQTT for fast messaging, re-authorized OAuth tokens for backgrounded apps, enforced safety speed restrictions, added GPS tracking and charging station finder features, and integrated Via Mobile registration and media service linking.
Lead Engineer at Charter Communications
April 1, 2020 - PresentLed development of Spectrum Access app using Flutter, Swift, and Kotlin; implemented accessibility features; migrated from iOS-only to Flutter (iOS & Android); added lockscreen playback, Siri/Google Assistant search; increased test coverage; created CI/CD with Bitrise; integrated Google Crashlytics; distributed apps via TestFlight, Firebase, Visual Studio App Center, HockeyApp, Bitbucket to App Store and Play Store; co-invented two patents for auto-resynchronization; awarded Outstanding Audio Description Innovation Award (2021) and Helen Keller Achievement Award (2023); managed a team of four developers and defined roadmap.
iOS Engineer at Kaiser Permanente
March 31, 2020 - September 16, 2025Developed and optimized the KP Workforce and CasePick apps for expense tracking and barcode scanning; integrated Scandit barcode scanning; sole iOS developer for KPCard; added push notifications and speech recognition; implemented drag-and-drop; implemented Swift Protocols; assisted redesign and testing of API JSON payloads.
Senior iOS Developer at Jack Henry & Associates
October 31, 2018 - September 16, 2025Led major app overhaul modernizing the codebase with Objective-C and Swift; developed secure authentication (Touch ID, Face ID) and payments features (Zelle, PDFs, Google Analytics); updated app to Swift 4 and bridged with Swift 4 classes; maintained repos via SourceTree and GitLab; used CocoaPods and modularized features into separate frameworks.
iOS Developer (Contract) at Ta ta Consultancy Service (Sprint, UConnect)
April 1, 2014 - September 16, 2025Worked on Sprint’s Connected Vehicle Program to modify UConnect Access and Fiat Access iPhone apps; implemented MQTT pub/sub; added QR vehicle registration; re-authorize OAuth tokens for apps in background; implemented speed lockout; added location/GPS features for vehicles and charging stations; integrated Pandora, iHeartRadio, Aha, Slacker; coordinated commits via Bitbucket and used TestFlight for internal deployments.
Lead Mobile Engineer at Dartmouth College
May 1, 2025 - PresentLeading the end-to-end development of the Evergreen iOS application focused on promoting wellness and mental well-being among students. Architected and built responsive UI using Swift, Objective-C, and SwiftUI; integrated RESTful APIs; ensured performance across iOS devices. Collaborated with UX designers and mental health experts to translate requirements into technical specs, emphasizing accessibility and user experience. Implemented features like real-time mood tracking, personalized content delivery, and secure data storage. Applied Agile methodologies with sprint planning, code reviews, and CI workflows.
Lead Mobile Engineer at Spectrum / Charter Communications
April 1, 2025 - September 16, 2025Led the development of the Spectrum Access app using Flutter, Swift, Kotlin, and Xcode, enabling an inclusive film experience for users with visual and hearing impairments. Transformed the app from iOS-only to a cross-platform Flutter app for iOS and Android. Implemented accessibility features and integrations such as lock-screen playback, Siri, and Google Assistant search. Maintained 75% test coverage, designed a CI/CD pipeline with Bitrise, and integrated Google Crashlytics. Managed app distribution via TestFlight, Firebase, Visual Studio App Centre, HockeyApp, and Bitbucket. Co-inventor of two patents for auto-resynchronization in audio. Mentored a team of four developers and helped define product roadmap.
iOS Engineer at Kaiser Permanente
March 1, 2020 - September 16, 2025Developed and optimized the KP Workforce and Case Pick apps for expense tracking and barcode scanning. Integrated Scandic barcode scanning to streamline medical inventory workflows. Served as the sole iOS developer for KP Card, featuring push notifications and speech recognition. Implemented drag-and-drop attachments, leveraged Swift protocols for clean, reusable code, and collaborated with backend teams to redesign/test JSON APIs using Postman.
Senior iOS Developer at Jack Henry & Associates
October 1, 2018 - September 16, 2025Overhauled a large app, modernizing legacy codebases with Objective-C and Swift. Implemented secure authentication (Touch ID/Face ID, password management), Zelle payments, PDF statements, and Google Analytics tracking. Built modular frameworks for scalable architecture, established a CI pipeline with Jenkins, and delivered universal, iPhone-only, and iPad-only builds. Executed automated UI tests (KIF, XCTest) to improve quality and reduce regressions.
iOS Developer at TCS – Contractor for Sprint (T-Mobile)
April 1, 2014 - September 16, 2025Contributed to Sprint’s Connected Vehicle Program (CVP), enhancing the UConnect Access and Fiat Access iOS apps. Implemented remote start/stop, speed lock, and shutdown controls for vehicles; used MQTT for fast data messaging; re-authenticated OAuth tokens for background apps; enforced safety features like speed-based restrictions; added GPS-based features and media service linking. Used Bitbucket for version control and TestFlight for internal deployments.
Education
Master of Science in Computer Information Systems at Boston University
January 1, 2005 - January 1, 2008Bachelor of Science in Computer Science at Hunter College, CUNY
January 1, 2001 - May 31, 2005Qualifications
Certified Scrum Developer (CSD)
January 1, 2018 - September 16, 2025Industry Experience
Software & Internet, Professional Services, Media & Entertainment, Healthcare, Telecommunications, Education
Skills
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