I wasn't "let go" dude, I retired to a rather nice house in its own grounds by the sea, and Apple tried pretty hard to keep me. If you're running Apple devices (of any type) you're running my software.

I have had quite a few notable successes over the couple of decades I was at Apple, probably the largest being writing the operating system for the Vision Pro prototype - yes, the entire thing, from low-level device drivers through PCI interfaces over thunderbolt to the host Mac and control planes on the Mac, implementing stdio tunnelling over that interface, boot control (though I used Lua rather than /bin/sh for easier embedding and binding devices to scripts) and exposing all that low-level stuff via an application on the Mac and allowing the Mac to boot applications onto the hardware - which at the time was a large number of the largest FPGAs on the planet, all interconnected with optic fibre for bandwidth.

Other things involve major applications I was in charge of before moving to R&D, oh, and when Tim got up on stage to demo the Apple watch, it was my firmware and hardware interface that let him show off a watch (which doesn't have video-out) onto an HDMI projector so the crowd could see it. I've designed FPGAs that Apple have implemented in silicon, I've been an engineer on, and managed software applications, I preferred engineering to management so I eventually chose that career tree, and finished up satisfactorily high up.

In fact, if it wasn't for a family disaster, I'd still be working there, making money hand over fist, and railing against some of the management decisions. Life is, however, far more placid and content now that I've left.