Looking for senior ruby on rails developer. We have urgent issues troubleshooting the stripe payment gateway. Website was written with Ruby on Rails 4.2 and integrated with stripe for payment gateway and deployed on AWS EC2 by using the capistrano. Need to modify the payment gateway integration asap and redeploy on both production and staging. Looking for only experienced in RoR backend and payment gateway integration. Prefer to know AWS and capistrano. If this job is done successfully, there are more tasks for right developer.