Senior Ruby on Rails Developer

Job in Reading, Berkshire, S401UA, England, UK

Listing for: Run-Time Group Ltd

Full Time position
Listed on 2026-09-01

Job specializations:

Software Development
Ruby on Rails, Full Stack Developer, Backend Developer

Salary/Wage Range or Industry Benchmark: 100000 GBP Yearly GBP 100000.00 YEAR

A Senior Engineer (Ruby on Rails) is required to join one of our clients, who are transforming the automotive space. You will havedeep expertise in architecting, developing, and scaling full-stack web platforms, particularly within the Ruby on Rails ecosystem. Experienced in guiding cross-disciplinary engineering teams and embedding modern engineering practices that enable reliable, high-velocity delivery. Adept at introducing and operationalising emerging technologies including LLMs and AI-driven tooling to create meaningful product and commercial impact.

Brings a decisive, action-oriented approach and a strong ability to align technical direction with business strategy in fast-moving, product-centric environments.

Key requirements:

Ruby & Ruby on Rails Full-Stack Engineering:
JavaScript, Type Script, React, Hotwire, Stimulus Node.js & React exposure beneficial API Design: REST, GraphQL, external integrations Data Stores:
PostgreSQL, MySQL, Redis, Elasticsearch Async Processing:
Sidekiq, Resque Cloud & Dev Ops: AWS, Heroku, Docker, CI/CD pipelines, IaC Testing & Quality: RSpec, Capybara, TDD methodologies Security, performance tuning, and system hardening AI & LLMs: API integration, prompt engineering, AI-enhanced features and developer tooling Responsibilities:
Owns end-to-end system architecture, ensuring solutions are scalable, maintainable, and delivered tners closely with Product, Design, and Commercial teams to convert business objectives into robust technical plans Drives engineering excellence through best practices, continuous improvement, and sustainable delivery processes. Led the build-out and ongoing evolution of high-traffic Ruby on Rails platforms supporting significant commercial throughput. Modernised legacy systems while ensuring uninterrupted business operations.

Introduced AI-powered enhancements to improve customer journeys and internal operational efficiency. Collaborated with stakeholders across pricing, quoting, and customer lifecycle domains to deliver impactful product improvements.