Ruby on Rails Developer

FRESH.; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

FRESH. in London is seeking a Senior Ruby on Rails Developer to bolster the backend of its real-time Passenger Assistance platform. The role is hybrid, based in London with a mix of remote and office work, and focuses on scaling onboarding, reducing backend bottlenecks, and delivering robust RESTful services.

You will own technical direction, design scalable Rails components, and mentor engineers while collaborating with a cross-functional product squad to push features from idea to production.

Qualifications

• Commercial experience with Ruby on Rails in production environments.
• Solid understanding of Rails monolith architecture and full-stack troubleshooting.
• Experience building and maintaining RESTful APIs.
• Strong knowledge of PostgreSQL, Redis and Sidekiq.
• Comfortable working with AWS infrastructure and Docker.

Responsibilities

• Own technical direction and architecture decisions within the Rails application.
• Design, build, and maintain scalable backend services and RESTful APIs.
• Optimize background job processing using Sidekiq.
• Help improve onboarding scalability and reduce backend delivery bottlenecks.
• Identify technical risks early and balance trade-offs between speed, quality, and scope.
• Collaborate within a cross-functional product squad.
• Support and mentor engineers through technical leadership and problem-solving.

Skills

Ruby on Rails

Rails monolith

RESTful APIs

PostgreSQL

Redis

Sidekiq

AWS

Docker

Tools

AWS

Docker

Job description

Ruby on Rails Developer - London (Hybrid) | Full-Time

FRESH has partnered with a fast-growing B2B SaaS company building a next-generation data platform that delivers real-time insights to support passengers requiring assistance while travelling.

They are now hiring a Senior Developer to strengthen the core backend of their Passenger Assistance platform, helping scale customer onboardings faster and reduce backend bottlenecks in feature delivery.

Responsibilities:

• Own technical direction and architecture decisions within the Rails application
• Design, build, and maintain scalable backend services and RESTful APIs
• Optimise background job processing using Sidekiq
• Help improve onboarding scalability and reduce backend delivery bottlenecks
• Identify technical risks early and balance trade-offs between speed, quality, and scope
• Collaborate within a cross-functional product squad
• Support and mentor engineers through technical leadership and problem-solving

Key Requirements:

• Strong commercial experience with Ruby on Rails in production environments
• Solid understanding of Rails monolith architecture and full-stack troubleshooting
• Experience building and maintaining RESTful APIs
• Strong knowledge of PostgreSQL, Redis, and Sidekiq
• Comfortable working with AWS infrastructure
• Experience using Docker in development or production environments

This is a fantastic opportunity to join a purpose-driven technology business making a genuine impact, while taking a meaningful step into technical leadership within a collaborative and high-growth environment.