DSA-Heavy Java Programming

I'm looking for a seasoned Java expert who also has a firm grasp of Data Structures and Algorithms, particularly arrays and strings. Here's what I expect you to do:

- Implement data structures, mainly focusing on arrays and strings.
- Carry out advanced operations involving said data structures, including but not limited to sorting and searching.
- Ensure code runs efficiently and smoothly, keeping optimization in mind at all times.

Ideal skills and experience:

- Excellent knowledge of Java
- Strong understanding of DSA
- Proven experience in code optimization
- Mastery of arrays, strings, and their advanced operations.