These are some of my favorite online courses:

• Fundamentals of Software Architecture for Big Data (Coursera Link)
• Initiating and Planning Projects (Coursera Link)
• Neural Networks and Deep Learning (Coursera Link)
• Improving Deep Neural Networks: Hyperparameter Tuning, Regularization and Optimization (Coursera Link)
• Structuring Machine Learning Projects (Coursera Link)
• Convolutional Neural Networks (Coursera Link)
• Signals and Systems (MIT OpenCourseWare Link)
• Introduction to Algorithms (MIT OpenCourseWare Link)

Watch List:

• Advanced Data Structures (MIT OpenCourseWare Link)
• Design and Analysis of Algorithms (MIT OpenCourseWare Link)
• Performance Engineering of Software Systems (MIT OpenCourseWare Link)
• Digital Signal Processing (MIT OpenCourseWare Link)