Dev Stack Exploration

I'm looking for a developer to explore a new tech stack with me. The specifics of what we will create or enhance are open to discussion.

The ideal freelancer for this project should have:
- A strong background in web application development, mobile app creation, and backend API development
- Excellent knowledge of performance improvement techniques
- Expertise in security enhancement and scalability increase
- Proficiency in using JavaScript, Python, and Java

Please note, the specifics of the project are still being determined, so flexibility and creativity are key.