Senior Software Engineer (Java) - Contract

Responsibilities

• Design, develop, and maintain backend integration services connecting external systems with Shopify and other commerce platforms
• Build and manage service layer and integration layer components for client projects
• Develop and consume APIs, with a focus on GraphQL (Shopify’s primary API) and REST
• Implement webhooks, asynchronous processing, and scheduled job workflows
• Collaborate with cross-functional teams including architects, engineers, and project managers across multiple time zones
• Ensure high performance, scalability, and reliability of backend services handling high-volume transactions
• Participate in code reviews, technical discussions, and continuous improvement of development practices
• Work directly with clients to understand integration requirements and deliver solutions

Requirements

• 5+ years of professional Java development experience
• Proven track record building and managing backend systems and integration services
• Proficiency working with APIs like GraphQL and REST API experience is required
• Experience with webhooks, event-driven architecture, asynchronous processing patterns, and scheduled tasks
• Strong understanding of Computer Science fundamentals (data structures, algorithms, system design)
• Experience working with Git, CI/CD pipelines, containerization (Docker)
• Proficiency working with different Relational (PostgreSQL, MySQL) and Non-relational databases.
• Available to work Eastern Time (ET) ) hours

Nice-to-Haves:The following would be bonus experience to have, though highlight any additional experience or skills you may have. We like working with people with varied backgrounds and experiences.

• Experience with Shopify APIs or the Shopify ecosystem
• Background in e-commerce or ERP system integrations
• Experience with Spring Boot or the Spring ecosystem
• Experience with middleware and message queues (Kafka, RabbitMQ)
• Familiarity with cloud platforms (AWS, GCP, or Azure)
• Prior experience in an agency or consulting environment
• Experience with data migrations between platforms

AI in our hiring process

We use AI to help us review and shortlist applications based on job-related criteria. A human hiring manager always makes the call on who moves forward. As a company that builds with AI every day, we're all for candidates using it too — just be upfront about how it helped.