Salary: £60,000 - 80,000 per year Requirements: Deep experience with Ruby on Rails and Object-Oriented Programming (OOP) Expert in PostgreSQL tuning and complex query optimization Proficient with Docker, AWS, and containerized deployment workflows Highly proficient in building RESTful APIs and managing JSON serialization Knowledgeable in secure authentication methods like JWT or SSO Strong communication skills for leading production incident responses Responsibilities: Lead the evolution of core Ruby on Rails operational platforms Optimize PostgreSQL performance and Sidekiq background job efficiency Manage secure third-party integrations and RESTful API design Partner with Platform teams on AWS and CI/CD reliability Technologies: API AWS CI/CD Docker JSON JWT OOP PostgreSQL Rails Ruby Cloud Backend Redis More: We are a Series A startup dedicated to breaking down barriers and making the world more accessible for everyone. Originally founded within the UK transport sector, we have developed award-winning, innovative solutions prioritizing dignity, safety, and inclusion for millions of users. As a Senior Ruby on Rails Engineer, you will play a major role in stabilizing our core systems and contributing to our mission. We offer competitive salaries, private healthcare, and a collaborative work environment during a thrilling period of international scaling. last updated 10 week of 2026