Looking for RoR help!

We have an existing RoR implementation for our application – named dog-earz. We are looking to do the following

• Implement some enhancements – mainly involves updates to the UI flow – this would also involve updates to the model
• Ensure that security issues are taken care of
• Look at setup configuration (web-server, phusion passenger) and do the tweaks to handle higher concurrency loads

This would require understanding of our model, application flow and implementation. The technical knowhow needed is

• Good knowledge of Ruby, RoR
• ERB, Ajax.
• Also if the person has deployed small to medium scale SaaS products on the web it would be great.

We also have a backend implementation in Ruby that performs resource (CPU, memory, Bandwidth) intensive operations. We have identified some optimizations for this. These need to be reviewed, implemented and tested
This needs

• Good knowledge of Ruby
• Knowledge of Unix IPC would be useful

Contact rajag [at] zebugroup [dot] com