Role: Senior Ruby on Rails Engineer Location: San Francisco,CA REQUIREMENTS A degree in computer science/engineering with a minimum of 2-4 years of software development with Ruby on Rails Fluency in the Ruby language, including familiarity with the language\\\\\\\'s meta programming features. Experience writing applications using Test Driven Development with RSpec. Experience building real-world Rails applications, with Rails version 3.0.x or later. Candidate should be very familiar with Rails conventions for code organization, deployment, etc. Experience with more recent Rails features (e.g. asset pipeline) is a plus. A belief that automated testing is essential to building robust, supportable software and a commitment to making automated testing part of the application development process. Familiarity with how asynchronous message queues and worker frameworks (e.g. Sidekiq, Resque) are used in web applications and, ideally, experience in using such a framework in one or more real world applications. High degree of familiarity with SQL databases, including data modeling in SQL, the use of indices to improve query performance, and the use of transactions to maintain data integrity. Practical experience with REST and JSON APIs, and an understanding of how to build applications that serve and consume these sorts of APIs. Expertise in working with cloud systems, specifically for application hosting, file storage, and other related concerns. Experience integrating with 3rd party services, including social applications (e.g. Facebook, Twitter), communication services (e.g. Twilio, Sendgrid, APNS) Knowledge of best practices in designing and architecting localized Rails applications. Experience with one or more NoSQL databases. Comfortable working in an environment where innovation and change are the norm. A passion for building great products.