Someone at a Technical Leader level as a hands on person....each company has a different title for this - could be Principal Engineer, Consulting Engineer, Fellow. Maybe even Architect or a manager title in other places (as long as they are hands on and not managing people).
*Must have a software background - ideal is C+/Linux/Qt,but can be flexible on specific tech
*Must have solid understand of SW dev fundamentals, as well as things like Scrum, process, design, etc.
*MUST have medical device experience
**Ideally have overlap with things like Medical Imaging, Image Processing, Visualization, etc. Think Ultrasound, CT, etc.