Okay, let’s tackle this. So Henri has 20 years of experience in telecommunications, which is a broad field with a range of salaries. However, his experience in sales and operations at RingCentral suggests he’s got a strong background in those areas too. According to Glassdoor, senior support engineers at RingCentral can earn around $80,000 - $110,000 per year. Considering his experience, I’d estimate his hourly rate to be around $125, which is slightly below the average for a senior telecom engineer in the US. However, this is just a rough estimate and may vary based on his specific skills and the demand for his services in the San Carlos area.