Okay, let’s calculate this. Spencer has a broad range of skills, including iOS and Android development, mobile applications, and web development with Ruby on Rails and PHP. While he’s proficient in several areas, his experience and skills don’t quite reach the level of a lead developer or a senior engineer. Considering his location in Seattle, which has a strong tech industry, but no specific mention of a high-demand role, I’ll estimate his rate at the lower end of the range for a junior or mid-level developer. A rough estimate for a junior developer in the US is around $50–75 per hour, so I’ll put Spencer’s rate at $75 per hour.