Okay, let’s tackle this. So Donna has 10+ years of experience as a software engineer, which is a solid foundation. Her expertise in full-stack web development, cloud computing, and DevOps is in demand. Location is San Francisco, CA, which is a hub for tech talent. According to Glassdoor, average salaries for software engineers in SF range from $124 to $250 per hour. Considering her experience and skills, I’d estimate her rate to be around $125 per hour, which is below the average but still competitive. Some junior software engineers in SF might charge $100–$150 per hour, while more senior engineers can earn $200–$300 per hour. Donna’s experience and expertise place her in the mid-range, so $125 per hour seems reasonable.