Okay, let’s calculate Ken’s rate. So, Ken has a strong background in mechanical engineering, with expertise in medical devices and product development. He has experience in manufacturing, design control, and root cause analysis, which are all in-demand skills. Location is Lincoln, Massachusetts, which is a hub for biotech and medical device companies. According to industry benchmarks, mechanical engineers with similar skills and experience can charge around $100–$150 per hour. Considering Ken’s expertise and location, I’d estimate his hourly rate to be around $125, which is slightly below the average but still competitive.