Foundation Devices' own about page describes Ken Carpenter as "Cofounder and CTO leading hardware engineering and firmware architecture".
That is the scope this entry covers. Foundation's devices are air-gapped by design: Passport moves transaction data in and out by camera and screen using QR codes, or by microSD card, and carries no radio and no USB data path for signing. The company publishes its hardware design files alongside its firmware, which means the schematics behind those choices are open to inspection rather than described in marketing terms.
No further biographical detail is recorded here. The company's own description of the role is the source, and it is the limit of what this directory states.