I lead a team that designs 5G and datacenter chips. It spans over 6 countries and 13 time zones
So I get to have meetings at all kind of ridiculous hours but I get a lot of spaces in between which allows me to game if I want to.
Customers are companies like Cisco, Ericsson, Nokia, Microsoft, Ciena, ZTE, Rakuten, Facebook, Google.
Most of the chips can be customized to the customers specific needs. The typically handle 1.6 Terabyte per second of data using serial links that individually handle 106.26 Gigabyte per second of bandwidth. Most of the interfaces are Ethernet, PCIE or wireless 5G
I typically design review the designs or help the less experience people with the designs problems they might encounter.
It's all done in Verilog/VHDL or Deep sub-micron Custom transceiver design