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.
o 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.
o 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.
o 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.
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.
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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