Speak Clear: Master Professional English Pronunciation with Daily AI Practice

Guzman Hernandez is a professional communication coach and applied linguist who has spent more than a decade helping working professionals speak English with the clarity their careers deserve. A native Spanish speaker who learned English as an adult, he understands on a personal level what it means to be fluent on paper and tongue-tied on a video call — and he has built his career around closing that gap.

Hernandez began his career teaching English to adult professionals, where he noticed a consistent pattern: the most skilled engineers, managers, and researchers were losing meetings, interviews, and opportunities not because their English was weak, but because their pronunciation forced listeners to work. Over the following years, he developed a coaching philosophy built on two ideas: intelligibility matters more than accent, and adults improve fastest when practice is daily, private, and precise.

In 2018 he began integrating speech-recognition AI into his coaching, discovering that immediate, judgment-free feedback could accelerate progress from months to weeks. That work evolved into the fifteen-minute daily practice method at the heart of this book — a system he has since guided professionals through across technology, finance, engineering, healthcare, and consulting companies in North America, Latin America, and Europe.

He is the founder of Speak Clear, a coaching practice that pairs structured daily drills with AI-driven feedback for working professionals worldwide. He writes and speaks regularly about language learning and professional communication, and he is currently developing new AI-based tools for pronunciation training. *Speak Clear: Master Professional English Pronunciation with Daily AI Practice* is his first book.