Thomas Pettit began developing software as a hobby. He changed tracks from being a truck driver to being a software developer by earning a graduation degree in software development at the age of 35. He taught basic computers in a community adult education centre in Melbourne for 2 years before commencing his software development career. Tom has worked for several government agencies including defense, law enforcement, and transport as well as large and small private businesses. Tom has mentored several up and coming software developers during his career and takes great joy in assisting others to improve their skills and further their career prospects. Scott Cosentino is a software developer and teacher currently working in computer security. Scott has worked extensively with both low- and high-level languages, working on operating system- and enterprise-level applications. Scott has a passion for teaching and currently writes and creates videos on computer security and other programming topics. He has developed an extensive library of courses and has taught over 45,000 students through courses with Udemy, Packt, and CodeRed. He maintains a blog on Medium, and is active on YouTube and LinkedIn, where he enjoys creating content and interacting with students. Vlad is a university lecturer with a Ph.D. in Machine Learning and a freelance Software Engineer. He has over 10 years of computer science teaching experience in various roles: school teacher, private tutor, internship mentor, university TA, and lecturer. Over the years, Vlad has worked with most cutting-edge technologies in areas such as frontend development, database design and administration, backend programming, and machine learning