Senior Ruby on Rails Developer

JR United Kingdom; London; Remote; GBP 60,000 - 85,000; Full time

Job summary

A forward-thinking company is seeking a Senior Ruby Developer to tackle challenging engineering tasks in a modern, collaborative environment. This role focuses on building and optimizing scalable backend systems that handle high volumes of data. You will work with a talented team that values best practices and automation, contributing to a continuously evolving platform. If you're passionate about solving technical problems and enhancing performance in a Ruby environment, this is an exciting opportunity to make a significant impact.

Benefits

Stock options

Flexible remote working

Qualifications

• 4+ years experience with Ruby on Rails.
• Strong knowledge of SQL databases and performance tuning.

Responsibilities

• Developing & optimising scalable backend systems in Ruby on Rails.
• Designing, building, and maintaining APIs & integrations.

Skills

Ruby on Rails

SQL databases

Performance tuning

Caching strategies

CI/CD

Docker

AWS

Tools

PostgreSQL

Redis

Sidekiq

Kubernetes

Job description

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? Ruby Developer - Remote (UK-based) - Up to £85K

Are you a Senior Ruby on Rails Developer looking to work on scalable, high-traffic applications in a modern, engineering-led environment? We’re growing rapidly and need engineers who can build, optimise, and scale backend systems while maintaining clean, maintainable code.

Join a team that values best practices, automation, and performance, working on a platform that’s continuously evolving to meet increasing demand.

What We Offer:

• Up to £85,000 + stock options
• Flexible remote working (UK based) with a London HQ
• Work on high-scale backend systems that process large volumes of data
• Modern tech stack: Ruby on Rails, PostgreSQL, Redis, Sidekiq, AWS, Docker, Kubernetes
• Opportunity to influence technical decisions & contribute to architectural improvements

Key Responsibilities:

• Developing & optimising scalable backend systems in Ruby on Rails
• Designing, building, and maintaining APIs & integrations
• Improving performance & database efficiency for high-scale applications
• Enhancing existing systems for better performance, scalability, and maintainability
• Working closely with DevOps & product teams to ensure reliability & resilience

What We’re Looking For:

• 4+ years experience with Ruby on Rails
• Strong knowledge of SQL databases
• Understanding of performance tuning & caching strategies
• Comfortable with CI/CD, Docker, and cloud services (AWS preferred)

Why Join Us? This is an opportunity to work on meaningful engineering challenges - scaling, optimising, and improving a growing platform. If you enjoy solving technical problems, improving performance, and working in a modern Ruby environment, we’d love to hear from you.