Ruby on Rails developers on contractual basis

Looking for a Ruby on Rails developer with the following skills-

-Designing and developing new web applications.
-Maintaining and troubleshooting existing web applications.
-Writing and maintaining reliable Ruby code.
-Integrating data storage solutions.
-Creating back-end components.
-Identifying and fixing bottlenecks and bugs.
-Integrating user-facing elements designed by the front-end team.
-Connecting applications with additional web servers.
-Maintaining APIs.
- Good communication and attention to details.