This essay examines the historical impact of engineering on society, highlighting both positive advancements like increased mobility and communication, and negative consequences such as pollution and displacement. It emphasizes the importance of sustainability in future engineering practices. Furthermore, the essay discusses engineering professionalism and ethics within the Australian context, stressing the necessity for engineers to adhere to strict codes of conduct and integrity. It covers the need for engineers to practice competently, promote sustainability, and exercise leadership, referencing the Engineers Australia Code of Ethics. The essay concludes by advocating for best practice principles at both personal and professional levels, ensuring work standards and quality are maintained, even at the expense of monetary gain.