YouTube Promotional Video Editing

I'm seeking an expert video editor for a promotional video intended for YouTube. The video should be styled as a narrated demonstration.

Key Requirements:
- Extensive experience in video editing, especially for YouTube
- Proficiency in creating narrated demonstration style videos
- Prior work on promotional videos highly preferred
- Ability to enhance video with engaging visuals and sound to hold viewer's attention
- Understanding of YouTube's algorithm and trends to optimize video for maximum reach