Semi-Realistic Engineering Art for App and Website

I'm seeking a talented digital artist to create around 50 high-resolution, semi-realistic images for a mobile app and website.

Requirements:
- High-resolution, semi-realistic digital art
- Around 50 images needed
- Suitable for mobile app and website
- Engineering theme focusing on machines and tools

Ideal Skills:
- Proficiency in digital art tools
- Strong portfolio in semi-realistic art
- Experience in creating images for apps and websites

Please provide samples of previous work and an estimated timeline.