The author of this article is a firmware engineer with experience working with health and wellness startups, who has implemented error tracking for a React-Native app using Bluetooth Low Energy (BLE). The author uses Sentry.io to track errors, including connection failures, streaming failures, and invalid sensor data. The implementation involves logging errors with relevant information such as error codes, names, firmware versions, and build numbers. The Sentry dashboard allows the firmware team to visualize the data in a digestible form, enabling them to debug issues more effectively.