Software Engineer

You will own the integrations between commerce platforms (Shopify, POS, OMS, third-party SaaS) and the data that moves through them for a large replatforming program. The standard is data correctness at the systems-of-record level: orders, inventory and fulfillment must agree across every platform, provably, before and after cutover. This is a long-term, full-time engagement. It is backend integration engineering, not storefront or theme work.

Key Responsibilities:

• Build and maintain REST and GraphQL integrations with Shopify, POS, OMS and third-party business applications
• Implement OAuth flows, webhook verification and processing, retries, deduplication and error handling for production data flows
• Handle the realities of distributed data: duplicate events, out-of-order delivery, partial failures, eventual consistency
• Develop new API integrations with enterprise and SaaS platforms as the program expands
• Own SQL and BigQuery work wherever integrations require data movement or transformation
• Build automated reconciliation checks so systems of record stay in agreement
• Troubleshoot production integrations and data quality issues end to end

Requirements:

• 5+ years of backend engineering focused on API integrations between enterprise or SaaS platforms
• Strong Python in production
• REST and GraphQL integration experience on both consuming and building sides
• OAuth, API authentication, webhooks and robust error handling patterns
• Practical command of idempotency, deduplication and reconciliation design
• Strong SQL; hands-on data integration or ETL experience
• AWS deployment experience with Docker and CI/CD
• Fluent English
• Minimum 4 hours daily overlap with US Eastern time, full-time availability

Nice to Have:

• Google BigQuery
• Shopify APIs (Admin GraphQL, webhooks, Fulfillment Orders) or Salesforce Commerce Cloud
• POS, OMS, ERP or fulfillment system integration experience
• Event-driven integration patterns: queues, event buses, connectors