Okay, let’s tackle this. So Sumathy has 7 years of experience as a Senior Software Engineer, which is a good amount of time to gain expertise. The location is Detroit Metropolitan Area, which is not as expensive as some other US cities. Her education is in Electrical, Electronics and Communications Engineering, which is a broad field. Salary benchmarks for software engineers in the US vary widely based on location, experience, and industry. For a Senior Software Engineer in the Detroit area, a rate of $125 per hour seems reasonable, considering the cost of living and the level of experience. This is slightly below the national average for software engineers, but it's not uncommon for engineers in the Midwest to earn lower salaries.