Senior Ruby on Rails Developer

Ciklum

Remote, Czech Republic

About the role

As a Senior Ruby on Rails Developer, become a part of a cross-functional development team engineering experiences of tomorrow. The Project aims to power loyalty programs for some of the largest global Retail, QSR, Airline, Grocery, and Gasoline merchants. The platform handles nearly half a billion API calls a day – with a global footprint in four AWS regions.

Responsibilities

Back-end development to meet customer’s business needs and implement components according to modern software development environments (cloud-based platforms, microservice architecture, etc.)
Taking part in the decision-making process of application architecture design, solution development, architecture, and code review
Develop and review feature design documents and provide inputs/updates to the solution specification
Design and implement a set of various types of tests (unit, integration, functional, etc.)
Proactive position in solution development, and process improvements
Working in an international distributed team in an Agile environment
Communicate with PMs, engineers, Architects, QA and other colleagues and stakeholders
Delivering the product roadmap and plannings
Following coding standards, software best practices and writing highly testable, automatable and performant code over the whole SDLC

Requirements

Excellent knowledge in Computer Science, Computing Theory:
- Paradigm & Principles (OOP, SOLID, TDD, BDD)
- Database theory (RDBMS)
- Code testing practices
- Enterprise and Design Patterns
- Microservices architecture, SOA
- Security patterns, Common attacks types (OWASP)
Understanding of network interactions:
- protocols
- conventions (GraphQL, REST)
Excellent knowledge of Ruby programming language, paradigms, constructs, and idioms (more than 5 years)
Excellent knowledge and experience in Ruby on Rails (more than 5 years)
Practical commercial experience with:
- RDBMS (e.g, PostgreSQL)
- Key-value storages (Redis)
- Version control systems (GIT)
- Cloud computing platforms (AWS, GCP, Azure)
- Microservices
- Docker
- Continuous Integration tools (e.g. Gitlab Pipeline, Jenkins)
Experience with:
- Troubleshooting, profiling, and debugging applications
- Creation software architecture and design of complex applications, platforms
- Agile software processes and technologies
- Code Review process
- Refactoring process
Fluent or Upper-Intermediate English

Desirable

Experience in software development for more than 6 years
Understanding of orchestration and containerization (e.g. Kubernetes, Docker Swarm)
Knowledge in Deployment patterns
Experience with TDD environments (RSpec, Minitest, Capybara, Selenium)
Experience with web architecture at scale (20krpm and above)
Experience solving logistical problems with software
Autoscaling, monitoring, and alerting approaches

Personal skills

Perform a broad range of complex technical or professional activities, in a variety of contexts. Investigate, define, and resolve complex issues
Able to work in distributed cross-functional teams effectively
Influence customers and team members on the project level
May supervise others or make decisions which impact the work assigned to individuals or phases of projects
Plan, schedule, and monitor your own work (and of others where applicable) competently
Have learning agility (readiness for challenge and being open to change)

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