Toshiki Ogose
Senior iOS Engineer with 5+ years of experience in building scalable, user-centric mobile applications
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About
Senior iOS Engineer with 5+ years of experience in building scalable, user-centric mobile applications using Swift, SwiftUI, and UIKit. Proven track record in bridge-building between PoC/MVP and production-ready applications, especially in the Healthcare and Mobility sectors. Expertise in modern architectures (TCA, Viper, Clean Architecture), AR/ML integration, and cloud-backend synchronization.
Adept at cross-functional collaboration and delivering high-quality, maintainable code in agile environments.
Experience
Senior iOS Engineer at OMRON Corporation (2026-03 – Present)
Project: Predictive Health Data Collection & Disease Prediction System
- Challenge: Transitioning an experimental PoC (Proof of Concept) for processing blood pressure and smart ring data into a robust, production-ready mobile application that seamlessly integrates with server-side AI.
- Solution: Built a high-performance iOS app using a hybrid SwiftUI/UIKit approach for flexibility. Implemented a real-time data extraction engine using TensorFlow Lite for digit recognition (7-segment/standard digits) directly on the device, and established comprehensive App Store Connect privacy manifest configurations.
- Impact: Successfully migrated the PoC to a stable production environment, achieving high precision in data capture. Enhanced system maintainability by adopting Viper/Clean Architecture, enabling the team to ship new features 20% faster in subsequent sprints.
iOS Engineer at KINTO Technologies Corporation (2022-03 – 2026-02)
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Software Engineer at JR Shikoku Information System (2020-10 – 2022-02)
- Core Achievement: Modernized station digital signage systems. Migrated legacy browser-based systems to a stable WebView2 (C#) implementation, solving complex cross-origin constraints.
- Backend Automation: Orchestrated backend processes using Node.js and Bash, reducing manual operational overhead for daily log processing and system monitoring by over 50%.
Education
MSc in Computer Science – University of York (2023)
BA in History – University of Essex (2018)
