Maintain and improve our Ruby on Rails applications supporting operational workflows.
Write clean, well-tested code and uphold strong security and data integrity standards.
Manage third-party integrations, ensuring reliable and secure data exchange.
Work with the Platform team on AWS-based deployments and CI/CD processes.
Optimise background processing and database performance to maintain system stability.
Support investigation and resolution of production issues.
Partner with Frontend and Mobile engineers to deliver robust, scalable APIs.
Contribute to improving deployment practices, monitoring, and long-term maintainability.
Act as the technical owner of production systems that directly impact live rail operations, ensuring high availability and rapid incident resolution.

4+ years of professional experience with Ruby on Rails.
Strong understanding of object-oriented programming and Rails architecture
Extensive experience with PostgreSQL, including performance tuning and complex queries.
Experience with background job processing using Sidekiq and Redis.
Solid understanding of RESTful API design, JSON serialization, and authentication (e.g., JWT, SSO).
Hands-on experience with AWS services and containerised deployments (Docker).
Experience troubleshooting and supporting production systems.
Comfortable working within and improving existing codebases.
Ability to prioritise effectively and manage multiple initiatives.
Strong written and verbal communication skills in English.
Experience working in Agile/Scrum environments with Git/GitHub.

Mid-Senior Ruby on Rails Engineer, B2B SaaS

Key skills