Pixel Art Puzzle Game Development

I'm seeking an experienced game developer to help me create a 2D pixel art puzzle game using Phaser, optimized for web browsers. The game will have original game mechanics based on time travel and temporal paradoxes. A complete specification will be provided.

The work includes:
- design of the game area based on the specification
- creation of the pixel art sprites and tiles
- display of the levels
- player interactions
- coding of the game mechanics
- optionally, level design
- meetings and discussions with me
- validation and bug fixes
- documentation

Key Requirements:
- Expertise in Phaser and 2D game development
- Strong skills in pixel art and animation
- Experience optimizing games for web browsers
- Ability to design engaging and challenging puzzle mechanics

Please provide a portfolio showcasing similar projects.