First-Person RPG Mobile Game Design

I'm looking for an experienced game designer to create a first-person role-playing mobile game.

Key Requirements:
- Expertise in mobile game design
- Strong background in RPG mechanics
- Ability to create immersive first-person perspectives
- Experience with mobile platforms and user interfaces
-make it like GTA but based in Sydney Australia
-detailed open world
-Use 90s real Sydney based underbelly crime as storyline
- realistic visuals
-Large open world map

Ideal Skills:
- Game design software proficiency
- Creativity in story and character development
- Knowledge of mobile gaming trends
- Strong problem-solving skills

Please share your portfolio and relevant experience.