A machine learning engineer (MLE) is a key part of a team working for a business that wants to benefit from machine learning and artificial intelligence functionality. In general, these professionals are the guardians of some of the most powerful technologies around. Let's look at more on what MLEs do from machine learning professionals in the tech field who spoke to us about what it means to fill one of these job roles. Join nearly 200,000 subscribers who receive actionable tech insights from Techopedia. At a very basic level, a machine learning engineers has to understand the nuts and bolts of how these projects get put together, and how they get shepherded toward completion.