This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Backend Engineer based in the United States. The Senior Software Backend Engineer will play a key role in designing, developing, and scaling the backend infrastructure that powers a modern commerce technology platform. This position combines backend engineering expertise with data engineering responsibilities, including database architecture, ETL pipelines, and real-time data processing systems. You will contribute to high-impact solutions that connect digital experiences, shoppers, and retail ecosystems through reliable and scalable technology. Working as a senior individual contributor, you will collaborate with product, data, QA, and engineering teams to transform business needs into robust technical solutions. The role offers the opportunity to work with modern cloud technologies, AI-powered development tools, and complex distributed systems in a remote-first environment. You will help shape engineering practices while supporting mission-critical systems used by customers and partners.