Comprehensive Java Application Development Needed

I'm looking for an experienced Java developer to build a multi-featured application from scratch. The complexity of this project requires a developer with proficiency in designing and implementing complex applications.

Your Responsibilities:

- Developing the application architecture.
- Coding the application.
- Debugging and implementing any necessary fixes.
- Running tests to ensure application functionality.

Ideal Skills and Experience:

- Proven experience as a Java developer.
- Familiarity with data structures, algorithms, and software design.
- Previous experience in creating multi-featured applications.

Because of the intricacy of this project, I'm particularly interested in detailed project proposals that demonstrate a thoughtful approach to the development of multi-featured applications. Please include your proposed starting point, milestones, potential hurdles, and your plan for overcoming those hurdles in your proposal.