MILE
Senior Ruby Engineer
Manchester
Posted 26 days ago
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What You'll Do
- Design and implement scalable, high-performance backend systems to power our e-commerce experience
- Build and maintain interfaces that support our frontend, mobile, and third-party integrations
- Be very experienced working with pull, push models for data parity between third parties and our systems around e-commerce concerns of product, stock, orders and fulfillment synchronization
- You'll design, implement and deploy reliable software to solve complex e-commerce concerns
- Architect systems for membership access, catalog management, checkout, order fulfillment, and payments
- Collaborate cross-functionally 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
Who You Are
- 8+ years of experience building and scaling backend systems in production environments
- 4+ years leading Ruby cloud stack teams as a Principal Engineer/Architect
- You are very familiar with the Ruby object model - eigenclasses, method dispatch, method_missing, send, and all variable types
- Expert skills with Ruby idiomatic patterns, terse styling, metaprogramming and be able to create macros, DSLs, etc
- Have experience contributing to wildly used gems or developed internal DSLs for domain specific needs
- Ruby without Rails - you are able to develop complex applications and deploy Rails features vs custom Ruby plugins for the right use cases
- Proficiency in building APIs and distributed services using Ruby
- Must know the full ins/outs of Rails AREL, performant code, and proper Sidekiq job handling
- Have expert knowledge of proper data model design for e-commerce concerns and understand how to handle locking sensitive resources such as a credit card charge and concepts such as state machines
- Expert experience with PostgreSQL, including complex joins and reporting queries, and familiarity with data modeling and performance optimization
- Familiarity with cloud infrastructure (e.g., AWS, ECS, CodeBuild) and containerization (Docker,)
- Strong understanding of system design, data structures, and algorithmic principles
- Comfortable working in high-growth, early-stage environments—bias toward action and strong product sense are key
- A collaborative teammate who communicates clearly and is excited to shape the future of a luxury tech brand
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Bonus Points
- Prior experience in e-commerce, marketplaces, or membership-based platforms
- Familiarity with event-driven architectures and message queues (Kafka, SQS, etc)
- Experience working closely with design or product teams in consumer-facing companies
- Passion for fashion, luxury, or retail innovation
Requirements
What You'll Do
- Design and implement scalable, high-performance backend systems to power our e-commerce experience
- Build and maintain APIs that support our frontend, mobile, and third-party integrations
- Architect systems for membership access, catalog management, checkout, order fulfillment, and payments
- Collaborate cross-functionally 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
Who You Are
- 7+ years of experience building and scaling backend systems in production environments
- Genuine Rubyist having written custom DSLs and/or contributed to a major Ruby gem with the deepest knowledge of how to utilize Ruby's metaprogramming capabilities for maximal terse and DSL-centric applications
- Experience with the specific challenges of concurrency, inventory management/reservation, currency/price management, and third party API integration system designs - push, pull, effective normalization, etc
- High familiarity with excellent microservices software design - using software DSLs over cloud deployed solutions - across dozens of models, concerns, and integrations
- Experience with relational databases (e.g., PostgreSQL) and familiarity with data modeling and performance optimization
- Familiarity with cloud infrastructure (e.g., AWS) and containerization (Docker, Kubernetes)
- Experience developing and deploying GraphQL and RESTful API interfaces
- Experience developing multi tenant systems, relating to concerns of access control, reporting, and authorization/authentication
- Strong understanding of system design, data structures, and algorithmic principles
- Comfortable working in high-growth, early-stage environments—bias toward action and strong product sense are key
- A collaborative teammate who communicates clearly and is excited to shape the future of a luxury tech brand
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Bonus Points
- Prior experience in e-commerce, marketplaces, or membership-based platforms
- Familiarity with event-driven architectures and message queues (Kafka, SQS, etc)
- Experience working closely with design or product teams in consumer-facing companies
- Passion for fashion, luxury, or retail innovation
Benefits
Why Join MILE
- Opportunity to play a key role in shaping the future of the company
- Collaborative and innovative work environment
- Career growth opportunities in a fast-growing organisation
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Skills
Ruby
Ruby on Rails
PostgreSQL
AWS
Docker
Kubernetes
GraphQL
REST API
System Design
Metaprogramming
Sidekiq
Microservices
Distributed Systems
Data Modeling
E-commerce Architecture
DSL Development