e.g. Jim Keller. CPU engineer

  1982 - 1998, DEC Alpha processors (loved them)
  1998 - 1999, AMD Athlon
  1999 - 2004, MIPS
  2008 - 2012, Apple A4/A5
  2012 - 2015, AMD Ryzen/Zen
  2016 - 2018, Tesla
  2018 - 2020, Intel

https://en.wikipedia.org/wiki/Jim_Keller_%28engineer%29