Okay, let’s tackle this. So Ivan has 18 years of experience as a Systems Engineer, which is a significant amount of time. His skills like integration, CCTV, network security, and project management are in demand. Location is Baltimore, Maryland, which is a major city with a strong tech industry. However, his experience is not in a highly specialized field like software development or data science. Typically, Systems Engineers with similar experience can charge around $100-$150 per hour. Considering his location and industry, I'll estimate around $125 per hour.