Really good test engineers are hard to find and are at least as valuable as good design engineers. I always say that "a reproducable bug is half fixed", so getting reproducable bugs from testing cuts my work in half. Testing is a totally different mindset: design engineers try to make things work, while good test engineers try to do the opposite.
I once worked with a great test engineer named Bob. He was a really nice guy, except that he was positively sadistic when it came to making products fail after they had been "blessed" by design engineering. Then he would come by with a little smile and say "Betajet, I found something Interesting." "Interesting" of course meant more work for design engineers, but he had done the hard part.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.