11. AI Prompt Engineering/Consulting

“What exactly is prompt engineering?”

It’s the art and science of crafting effective AI prompts—and it’s becoming one of the hottest skills of 2025.

As businesses adopt AI tools, they’re discovering that the quality of output depends entirely on the quality of input. That’s where prompt engineers come in.

My friend David turned his prompt engineering hobby into a $150/hour consulting business. His clients? Marketing agencies and content creators who need to maximize their AI investments.

To build your prompt engineering side hustle:

• Develop expertise with specific AI tools: Different platforms require different prompt strategies
• Create prompt libraries: Build collections of effective prompts for various purposes
• Offer optimization services: Refine existing prompts for better results
• Provide training workshops: Teach teams how to create effective prompts
• Sell premium prompts: Package specialized prompts for specific industries or tasks

The competitive advantage? Understanding both the technical aspects of AI and the business outcomes clients need to achieve.

What industries could benefit from your prompt engineering expertise?