First-Person Action/Adventure Mobile Game

I'm looking for an experienced game developer to create a first-person action/adventure mobile game.

Essential Requirements:
- Expertise in mobile game development, particularly for iOS and Android platforms.
- Proficiency in 3D modeling and animation.
- Strong background in designing engaging first-person gameplay mechanics.
- Experience with action/adventure game dynamics and storytelling.

Ideal skills and experience:
- Familiarity with game development engines, especially Unity or Unreal Engine.
- Strong programming skills in C# or C++.
- Ability to create immersive environments and compelling narratives.
- Prior portfolio showcasing similar projects.

Please share your portfolio and estimated timelines.