Position: Senior Ruby on Rails Developer (4110)
Company: Exadel
Experience required: 5y
English level: intermediate

**Armenia, Azerbaijan, Bulgaria, Georgia, Hungary, Kazakhstan, Lithuania, Poland, Uzbekistan**

Currently, we are looking for a Senior Ruby on Rails Developer. Do you like writing mean and clean Ruby code? Come join our team and help us build amazing things. We’re looking for someone with a passion for programming and for writing beautiful code.  

**About Our Customer:**
The customer provides products for mobile app solutions, effortless payment, paratransit, business travel, and advertising that reaches captive audiences of millions and traces its history of success back to 1992. They are creating a comprehensive mobility platform for operators to efficiently manage their vehicles and drivers, for regulators to be informed and establish guidelines, for service providers to deliver sustainable, future-proof solutions, and for riders to have an effortless transit experience.
 
**About Our Project:**
The project is a taxi ordering service. The user can hail a taxi and monitor its arrival, pay for a ride, and see their own trip history. The system contains the following components:

ride server (all data processing)
payment server (PCI DSS-compliant) which performs a transaction with the passenger’s digital wallet and payment gateways
mobile application (hail taxi, geocoding, map, payments)
taxi terminal (3rd party)
The project includes integration with 3rd party services, including PayPal, MasterPass, Stripe, and Twillio.

**Requirements:**
3+ years of work experience as a Ruby on Rails developer
Solid knowledge of relational databases including MySQL, PostgreSQL
Strong background with delayed asynchronous job execution (RabbitMQ, Sidekiq, Resque, etc. in addition to Sneakers)
Experience working with and developing REST API
Experience in developing highly-interactive applications
Good knowledge and understanding of object-oriented programming
Good architectural sense and a passion for high-quality code
Desire to develop new skills and improve existing skills
Familiarity with version control systems (GIT)
Experience with high load
Strong communication skills 
Experience with TDD (MiniTest, Rspec), Docker, CI/CD, Linux, and Bash

**Nice to have:**
Experience with Kubernetes/GKE
Knowledge of rack-based app servers
Practice with AWS and NoSQL databases, like DynamoDB
Acquaintance with in-memory databases (Memcached, Redis)
Nginx

**English level:**
Intermediate+

**Responsibilities:**
Build, deploy, and maintain the application using Ruby on Rails, AWS, MySQL, PostgreSQL, and RabbitMQ
Follow best practices (test-driven development, continuous integration, and code standards)
Integrate with dispatch systems of taxi service providers and other third party services
Contribute in all phases of the development lifecycle
Think tactically and strategically 
Participate in meetings with the customer