Senior Ruby Backend Architect for E-commerce

MILE; Manchester; On-site; GBP 75,000 - 110,000; Full time

Job summary

MILE is seeking an accomplished Senior Backend Engineer to design and scale our luxury e-commerce platform in Manchester. You will own backend services end-to-end, building robust APIs for frontend, mobile, and third-party integrations, and ensuring data parity across systems.

You'll lead Ruby-focused architectures, mentor engineers, and drive best practices in testing, reliability, and observability while collaborating with product, design, and data teams to deliver exceptional user experiences.

Qualifications

• 7+ years of experience building and scaling backend systems in production
• 4+ years leading Ruby cloud stack teams as a Principal Engineer/Architect
• Deep knowledge of Ruby, including metaprogramming, DSLs and Ruby idioms
• Proficiency in building APIs and distributed services using Ruby (Rails AREL, Sidekiq)
• Experience with PostgreSQL and data modeling for ecommerce
• Familiarity with cloud infrastructure (AWS) and containerization (Docker, Kubernetes)
• Experience developing GraphQL and RESTful API interfaces
• Experience building multi-tenant systems and secure data handling
• Strong system design, data structures and algorithms understanding
• Excellent cross-functional collaboration and communication skills

Responsibilities

• Design and implement scalable, high-performance backend systems for our e-commerce experience
• Build and maintain interfaces that support our frontend, mobile, and third-party integrations
• Architect systems for membership access, catalog management, checkout, order fulfillment, and payments
• Collaborate with product, design, and data teams to deliver features that elevate the user experience
• Own backend services end-to-end, from design to deployment and monitoring
• Contribute to best practices in code quality, testing, reliability, and observability
• Help define our backend architecture and make strategic technical decisions as we scale
• Mentor junior engineers and foster a culture of technical excellence and collaboration

Skills

Ruby

Rails

PostgreSQL

API design

Microservices

System design

DSLs/metaprogramming

Cloud infrastructure

GraphQL

RESTful APIs

Tools

Docker

Kubernetes

AWS

CodeBuild

Job description

MILE is seeking an accomplished Senior Backend Engineer to design and scale our luxury e-commerce platform in Manchester. You will own backend services end-to-end, building robust APIs for frontend, mobile, and third-party integrations, and ensuring data parity across systems.

You'll lead Ruby-focused architectures, mentor engineers, and drive best practices in testing, reliability, and observability while collaborating with product, design, and data teams to deliver exceptional user experiences.