A Machine Learning Engineer is a professional who designs and builds systems that enable computers to learn from data. They use algorithms and statistical models to create programs that can make predictions or decisions without being explicitly programmed. This role combines knowledge of computer science, mathematics, and domain expertise to develop solutions that can improve over time as they are exposed to more data. These engineers often work with large datasets and utilize tools like Python, TensorFlow, and scikit-learn to train models. They collaborate with data scientists and software developers to integrate machine learning capabilities into applications, making technology smarter and more efficient.