**Hickey Kevin** is a software engineer and technical educator with over a decade of experience building mobile applications and machine learning systems. He currently leads mobile AI engineering at a San Francisco–based health technology company, where he develops on-device machine learning features that process biometric and sensor data in real time without compromising user privacy.
Kevin began his career as an iOS developer in 2014, building consumer apps that reached millions of users on the App Store. His early work with computer vision and natural language processing sparked a lasting interest in making AI accessible on mobile devices. Over the years, he has shipped production models for image classification, object detection, speech recognition, and text generation across both iOS and Android platforms. His engineering work spans startups and large technology companies, giving him a practical perspective on building AI features at any scale.
He is a regular speaker at mobile developer conferences, where he gives talks on practical machine learning integration, model optimization for edge devices, and designing privacy-respecting AI architectures. His writing has appeared on engineering blogs for several major technology companies, and he maintains an active open-source presence with several mobile ML libraries and example projects that help other developers get started with on-device intelligence.
Kevin holds a degree in Computer Science from the University of Washington. When he is not building or writing about mobile AI, he enjoys trail running in the Bay Area, experimenting with hardware prototyping, and teaching his kids to build simple programs on an ancient Raspberry Pi that he refuses to upgrade. He believes that the best way to learn technology is to build something real with it, which is the philosophy that drives every page of this book.