Lisping at JPL (2020)
flownet.com
flownet.com
At the time this article was published, it looked like IS Robotics was primarily a defense/military robotics contractor. Very soon after they would've released their new line of home robotics and rebranded as iRobot.
Searching their career page / their SWE roles doesn't show much in the way of Lisp, but I recall people saying it used to power Roomba.
And I'm not sure when, or if, they actually divested of military contracts.
My dad was a project manager at JPL during this time and I was in jr high or high school. I remember visiting during a JPL Open House and seeing a Mac IIcx or IIcx (the smaller Mac II box) mounted on a small RC-car-sized rover-like chassis autonomously roaming the grounds. I suspect the author of this piece had a hand in that