2D Hand-Drawn Platformer Game Development

I'm seeking an experienced game developer to create an engaging 2D hand-drawn platformer game. The game should include:

- Power-ups and upgrades
- Boss battles
- Hidden secrets/levels

Ideal skills and experience:
- Strong background in 2D hand-drawn art and animation
- Experience designing engaging gameplay mechanics and levels
- Ability to implement game features like power-ups, boss battles, and hidden secrets

Please provide a portfolio showcasing similar projects.