Senior Software Engineer - Ruby on Rails

KE Technology; United Kingdom; Remote; GBP 70,000 - 90,000; Full time

Job summary

KE Technology is looking for a Senior Ruby on Rails Developer to join their rapidly growing team. In this role, you will tackle challenges involving scalable, high-traffic systems while embracing best practices and a modern tech stack. The position offers competitive pay, stock options, and flexible remote working, perfect for skilled developers eager to influence architectural improvements.

Benefits

Flexible remote working

Up to £90,000 + stock options

Opportunity to influence technical decisions

Qualifications

• 4+ years experience with Ruby on Rails.
• Strong knowledge of SQL databases.
• Understanding of performance tuning & caching strategies.

Responsibilities

• Developing & optimising scalable backend systems in Ruby on Rails.
• Designing, building, and maintaining APIs & integrations.
• Improving performance & database efficiency for high-scale applications.

Skills

Ruby on Rails

SQL

Performance tuning

Caching strategies

CI/CD

Docker

AWS

Tools

PostgreSQL

Redis

Sidekiq

Kubernetes

Job description

Senior Software Engineer - Ruby on Rails

Senior Software Engineer - Ruby on Rails

This range is provided by KE Technology. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from KE Technology

Director - Ruby Specialist at KE Technology

Senior Ruby on Rails Developer - Remote (UK-based) - Up to £90K

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 £90,000 + 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.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Information Technology

• Industries

  Staffing and Recruiting

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