A good way for engineers to get their philosophical feet wet is to watch or listen to Teaching Company courses (here).  Most of the courses are worth the time and effort, but two come to mind immediately:

1. Great Minds of the Western Intellectual Tradition (here)
2. Philosophy of Science (here)

Two courses that aren’t strictly philosophy that engineers should find useful are

• Argumentation (here)
• Thinking about Capitalism (here)

One secret with the Teaching Company is to wait until their courses are on sale.  Great Minds and PhilSci aren’t on sale right now, but Argumentation and Capitalism are.  These courses are a great way to make your time in front of a treadmill or on your morning drive or commute that much more productive.