David Julian has written two books Designing Machine Learning Systems with Python, and Deep Learning with Pytorch Quickstart Guide both published by Packt. He has worked for Urban Ecological Systems Pty Ltd on a project to detect insect outbreaks in greenhouse environments using machine learning. He currently works as a technical consultant and information technology trainer for several private and non-government organizations. 

Yogendra Sharma is a developer with experience in architecture, design, and the development of scalable and distributed applications, with a core interest in microservices and Spring. He is currently working as an IoT and cloud architect at Intelizign Engineering Services, Pune. He also has hands-on experience with technologies such as AWS Cloud, IoT, Python, J2SE, J2EE, NodeJS, Angular, MongoDB, and Docker. He is constantly exploring technical novelties, and is open-minded and eager to learn about new technologies and frameworks.