Look up an “Engineering Consulting Firm”. They’ll be able to tell you if they can help usually in an hour conversation.
https://www.delve.com/services/engineering/electrical-softwa...
https://www.delve.com/services/engineering/electrical-softwa...
(we didn't get far enough along to seriously look into building a device, moreso trying to cobble together something via a raspberry pi or perhaps arduino)
What about, say, optical design?