With my company I support many (startup) companies in Europe with getting product ideas translated into working digital proto-types or even small batch production. My activities vary from requirements analysis and schematic capture up to realization of working PCB's and testing harnesses.
Mostly the products are based on the Linux operating system but also I design micro controller boards for specific functionality without the use of an operating system (bare metal) like arduino, STM32, espressif family and the like. The fields I am mostly working in are medical, domotica, subsea and consumer products.