YA Mystery/Thriller Manuscript

I'm looking for an experienced fiction writer to help me craft a young adult mystery/thriller manuscript.

Requirements:
- Engaging plot development with suspenseful twists
- Well-rounded, relatable young adult characters
- Captivating narrative style that hooks the reader

Ideal Skills & Experience:
- Proven track record in writing YA fiction
- Expertise in the mystery/thriller genre
- Strong command of language and storytelling techniques

Please share samples of similar work.