Java SQL Injection Vulnerability Repair

I'm dealing with an SQL injection vulnerability issue within my Java-based application and need a proficient freelancer to rectify this as soon as possible.

Specific Tasks Include:
- Identify specific areas causing vulnerability
- Amend the code to ensure SQL injection is not possible
- Verify the security patch resulting in a robust system

Ideal Skills:
- Experience fixing SQL injection vulnerabilities
- Java programming expertise
- Knowledge about secure coding practices
- A solid understanding of Database security, experience with MySQL would be a plus point.

Please validate your experience fixing similar issues in your proposals, and timeline to complete the task.