Circuit / pcb design for simple signal generator

Hi, I am looking for an electronic design professional to help me with producing gerber files for a simple circuit design. Currently there are versions of the circuit design in the public domain, I also have a commercially produced product that uses a variation of the circuit. I would like someone who can do a "clean room" design, taking the specification of the existing circuits and designing them from scratch to make it suitable for production. I should stress this circuit is quite trivial and versions contain 1 IC and less than 20 discrete components. I'm looking for someone with good industry experience who, as well as this can help me again as I get this product manufactured by an ECM.