ROR

Backend Development (Ruby on Rails)

• Design and develop scalable applications using Ruby 3.x and Rails 7
• Build and maintain REST APIs and webhook handlers
• Handle complex business workflows in logistics/order processing systems
• Ensure clean architecture and maintainability of large codebases

API & Integration Development

• Design robust APIs with pagination filtering and idempotency
• Integrate with third-party systems (3PLs ERPs e-commerce platforms)
• Handle failures retries and external API reliability issues

Event & Background Processing

• Implement Kafka (Karafka) consumers for real-time event processing
• Build Sidekiq jobs for async workflows and batch processing
• Ensure idempotency and fault tolerance in distributed systems

Database & Performance Optimization

• Work with PostgreSQL for complex queries and schema design
• Optimize performance (N1 queries indexing query tuning)
• Handle large datasets and high-volume transaction systems

Testing & Code Quality

• Write and maintain RSpec tests with high coverage
• Participate in code reviews and enforce best practices
• Ensure scalability reliability and maintainability of systems

Collaboration & Delivery

• Work closely with Product Operations and Engineering teams
• Translate business requirements into technical solutions
• Support production systems and handle critical issues

Required Skills & Technologies

Backend

• Strong expertise in Ruby 3.x and Rails 7
• Solid understanding of OOP design patterns and clean architecture

API & Integration

• Experience building RESTful APIs and webhooks
• Knowledge of idempotency retries and failure handling

Database

• Strong PostgreSQL skills (queries indexing optimization)
• Experience handling high-volume data systems

Event Systems

• Experience with Kafka / Karafka or similar
• Understanding of event-driven architecture

Background Processing

• Experience with Sidekiq or similar job processing systems

Testing

• Hands-on experience with RSpec TDD/BDD

Tools

• Proficiency in Git and collaborative workflows

Experience Requirements

• 8 years of backend development experience
• Strong hands-on experience in Ruby on Rails applications
• Experience in high-scale or distributed systems

Good-to-Have

• Experience in logistics e-commerce or supply chain systems
• Knowledge of Kafka ecosystem / event streaming
• Exposure to integration platforms (Boomi MuleSoft)
• Experience with high-volume transaction systems (100k requests/day)