Highlight industry-specific knowledge
Clinical applications and medical device design - these are not generic skills. These are industry-specific jargons that not everyone would know. Using such terms not only exhibits your domain knowledge but also convinces the hiring manager of your genuine interest in this field.
Express aspirations clearly
When you say you're seeking a challenging role, you're setting a certain expectation. Employers appreciate candidates who crave challenge and growth. It shows them you're not just looking for a comfy chair to fill. You're ready to get your hands dirty, solve problems and make a real impact.