Since 1999, I have done consumer electronics, A/V, embedded electronics, servers, and IT equipment. High-speed digital design (up to 25GHz). ARM, x86, and MIPS, mostly with Linux, though a couple were Windows. BIOS and uboot. Lots of DC/DC low-voltage power design up to <1A up to 15kA. I have spec'ed and tested AC/DC designs. PCI, PCIe, NVMe, USB, SATA, SAS, IDE.