Sr. Ruby on Rails Engineer

Sr. Ruby on Rails Engineer

Quick Summary

Our client is seeking a senior-level Ruby on Rails Engineer to build and support complex eCommerce integrations across Shopify and third-party platforms. This is a hands-on, client-facing role focused on asynchronous processing, event-driven architecture, APIs, and system integrations, with the expectation that this person can recommend solutions, translate client needs into actionable development work, and independently support multiple client environments.

Daily Tasks & Key Responsibilities

Primary responsibility: Design, build, and support scalable eCommerce integrations using Ruby on Rails, Node.js, Shopify, and asynchronous processing technologies.

• Design, build, enhance, and maintain Ruby on Rails applications and services supporting eCommerce and business workflows.
• Work directly with clients to understand technical needs, evaluate options, and recommend appropriate solutions.
• Translate client requests into Jira tickets, technical tasks, and implementation plans.
• Remain hands-on with development while also delegating work and helping coordinate technical execution.
• Build and support integrations between Shopify and external systems including PIM, OMS, WMS, ERP, inventory-management, and payment platforms.
• Develop Shopify custom applications, extensions, functions, webhooks, and API integrations.
• Build asynchronous processing workflows using Sidekiq, Resque, Delayed Job, or similar background-job frameworks.
• Design and support event-driven architectures using technologies such as AWS SQS/SNS, Kafka, RabbitMQ, or comparable messaging platforms.
• Develop and integrate RESTful and GraphQL APIs.
• Troubleshoot complex distributed-system issues including failed background jobs, race conditions, integration failures, and data consistency problems.
• Work with PostgreSQL, MySQL, and other relational databases, including query optimization.
• Participate in code reviews and write clean, maintainable, well-tested production code.
• Collaborate with Product, QA, DevOps, and other engineering teams.
• Monitor production integrations and improve system scalability, reliability, and fault tolerance.
• Create and maintain technical documentation including architecture diagrams, data flows, and API contracts.
• Support multiple concurrent eCommerce clients and independently prioritize technical needs and deliverables.
• Proactively suggest alternative technical approaches when a client's initial request may not be the best solution.

Required Qualifications

• 5+ years of professional Ruby on Rails development experience.
• Strong professional Node.js development experience.
• Hands-on experience with asynchronous and background processing technologies such as Sidekiq, Resque, Delayed Job, or similar.
• Experience with message queues or messaging technologies such as AWS SQS/SNS, Kafka, RabbitMQ, or similar.
• Strong hands-on Shopify experience, including API integrations, custom app development, Shopify extensions, Shopify Functions, webhooks, or Shopify Plus.
• Significant eCommerce integration experience across multiple implementations or client environments.
• Experience integrating eCommerce platforms with systems such as PIM, OMS, WMS, ERP, payment, inventory-management, or other third-party platforms.
• Strong understanding of RESTful and/or GraphQL API design and integration patterns.
• Experience with relational databases such as PostgreSQL or MySQL.
• Working knowledge of event-driven architecture and webhook-based integrations.
• Experience with Git and CI/CD pipelines.
• Strong debugging and troubleshooting skills within distributed, multi-service environments.
• Ability to translate business requirements into technical solutions and development tasks.
• Strong problem-solving skills and the ability to work independently with limited oversight.
• Strong written and verbal communication skills.

Preferred Qualifications

• PHP development experience.
• Production experience with AWS, particularly SQS and SNS.
• Experience with Kafka or RabbitMQ.
• Experience with additional eCommerce platforms such as BigCommerce, Magento/Adobe Commerce, or WooCommerce.
• Docker/containerization experience.
• Experience with AWS, Google Cloud Platform, or Azure.
• Microservices architecture experience.
• Client-facing consulting, professional services, or agency experience.
• Experience supporting multiple client accounts simultaneously.
• Experience creating technical architecture diagrams and integration documentation.
• Experience with AI-assisted development tools or AI-enabled software initiatives.