Okay, let’s calculate. Qing L. has a mix of skills in analog circuit design, semiconductor expertise, and low power design. Her experience in mixed signal circuit design is a plus. Considering her skills and location (Chandler, Arizona), I’m estimating her hourly rate to be around $125. This is lower than average for a mixed signal circuit design engineer in the US, but her skills are more focused on semiconductor expertise and low power design, which might be less in demand. However, she has experience in CMOS and PCIe, which are relevant technologies. This rate is also lower than what a senior engineer with similar skills might charge, but Qing L. is likely an entry-to-mid-level engineer. So, this rate seems reasonable for her level of experience and skills.