Senior Ruby Engineer

Hulcan

$120K — $150K *
US-AnywhereRemote in New York, NY
Consumer Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 8+ years of experience building and scaling backend systems in production environments.
  • 4+ years leading Ruby cloud stack teams as a Principal Engineer/Architect.
  • Deep knowledge of the Ruby object model, idiomatic patterns, and metaprogramming.
  • Proficiency in building APIs and distributed services using Ruby, without reliance on Rails.
  • Expert experience with PostgreSQL, including complex joins and performance optimization.
  • Familiarity with AWS and containerization technologies like Docker.

Responsibilities

  • Design and implement scalable, high-performance backend systems for e-commerce.
  • Build and maintain APIs for frontend, mobile, and third-party integrations.
  • Architect systems for membership, catalog management, and payments.
  • Collaborate with product, design, and data teams to enhance user experience.
  • Own backend services from design to deployment and monitoring.
  • Contribute to best practices in code quality and reliability.
  • Mentor junior engineers and promote a culture of technical excellence.

Benefits

  • Play a key role in shaping the future of the company.
  • Collaborative and innovative work environment.
  • Career growth opportunities in a fast-growing organization.
Full Job Description
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.


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.


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.


Let's build something people talk about. Together.

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