DSA Implementation in Python

I'm looking for an experienced developer to implement several data structures and algorithms in Python, with a strong focus on performance optimization.

The specific structures and algorithms needed are:
- Linked List
- Binary Tree
- Graph

Key Requirements:
- Expertise in Python
- Strong understanding of data structures and algorithms
- Experience in performance optimization
- Clean, maintainable code

Ideal Skills and Experience:
- Background in computer science or related field
- Previous experience with Python DSA projects
- Proven track record in optimizing code performance

Please provide examples of similar work done.