1. Andre Guedes is an active contributor of the BlueZ project (the official Linux Bluetooth protocol stack). He has done several contributions to the Linux kernel to support Bluetooth Low Energy technology. Andre works for INdT (Instituto Nokia de Tecnologia) as software developer.
2. Joao Paulo has done several contributions to Linux Bluetooth stack, besides other areas like media, connectivity, etc. He is currently working on INdT with Bluetooth Low Energy support on BlueZ (both kernel and userspace).