Hi, here's the presentation with links to some open source projects mentioned during the talk. I am heavily involved with two of them - Apache Mynewt and MCUBoot. Apache Mynewt is a pretty neat OS supported on many platforms (all 32-bit MCUs) with various network stacks and device management protocol stacks. And we welcome developers at any level! I am also partially involved in the Zephyr Project (another RTOS).
Feel free to send me any questions you may have.