Sr Backend Software Engineer - Core Commerce

DescriptionKforce has a client that is Senior Software Engineer - Core Commerce in the Chicagoland area (Onsite Monday - Thursday).Overview:Our client is delivering a next-generation B2B eCommerce platform serving fleet operators, dealers, and commercial vehicle parts buyers across North America. Built on a headless commerce architecture using Spryker Cloud Commerce OS, the platform integrates with ERP, DMS, OMS, and third-party systems to provide real-time pricing, inventory, ordering, and product intelligence.With a major dealer rollout targeted for 2026, the team is expanding its Core Commerce engineering organization and seeking a Senior Backend Engineer to help build and scale critical commerce capabilities.Key Tasks:* Develop and deliver production-grade backend solutions within Spryker Cloud Commerce OS* Build and maintain APIs and integrations connecting commerce, ERP, OMS, and dealer management platforms* Design and implement order management, pricing, inventory, returns, and fulfillment workflows* Create scalable backend services and commerce modules supporting high-volume transactions* Design and optimize relational database structures and data models* Troubleshoot performance, reliability, and data consistency issues in production* Lead code reviews and establish engineering best practices* Mentor engineers and collaborate closely with architects and cross-functional teamsThis is an excellent opportunity for a senior backend engineer with strong eCommerce platform experience to help deliver a large-scale digital commerce initiative supporting a critical customer rollout.Requirements* 8+ years of backend software engineering experience* Strong PHP development experience in enterprise environments* Hands-on experience with Spryker Cloud Commerce OS preferred* Candidates with SAP Commerce (Hybris), commercetools, Magento Enterprise, Shopware, or similar enterprise commerce platforms will also be considered* Deep understanding of eCommerce architecture and transaction flowsExperience with:* Order Management* Inventory Management* Pricing Engines* Customer-Facing Commerce Applications* Platform Integrations* Strong REST and GraphQL API development experience* Experience integrating with ERP, OMS, and other enterprise systems* Strong SQL experience with PostgreSQL and/or MySQL* Experience with Redis, Elasticsearch, and scalable backend architectures* Experience with CI/CD pipelines, Docker, and Kubernetes* Familiarity with Azure DevOps, GitHub Actions, and cloud-native development practicesPreferred Experience:* Spryker Cloud Commerce OS* B2B Commerce Platforms* Event-Driven Architectures* Distributed Transaction Patterns* Automotive or Parts Commerce* VIN, Catalog, Fitment, and Product Data Management* AI-assisted development tools such as GitHub Copilot or Claude CodeEnvironment:* Agile engineering teams focused on rapid product delivery* Highly visible digital transformation initiative* Modern cloud-native architecture* Complex enterprise integrations and high-transaction commerce environment* Opportunity to influence architecture and mentor engineering teamsJob TypeContractCompensation65 - $75