Highly recommend it as well. I'm a junior developer; that course gave me a much better sense for how to design software and answered a lot of software engineering / design-related questions that had coming up over and over again. I'm also just really allergic to handwave-y fluff, and the Mirdin stuff is just so much more concrete and precise than, e.g., the 'clean code' software engineering advice I've seen on the interwebs.