Sr.Backend Engineer
Summary
We are seeking a Senior C# /.NET Integration Engineer to design and build enterprise integrations, APIs, and data processing solutions in Azure environments. This role focuses on C# /.NET Core development, REST API design, SQL-based data work, JSON/XML transformations, ETL processes, and cloud-native Azure services. The role partners closely with Product Owners, Business Analysts, and business stakeholders to implement integrations between upstream PLM systems, InRiver PIM, and downstream marketplace/syndication platforms. Experience using AI-assisted development tools such as GitHub Copilot or Microsoft Copilot to improve productivity and code quality is required.
Responsibilities
Design and develop backend integrations and APIs using C# and .NET Core/.NET 6+. Build and maintain REST APIs with OpenAPI/Swagger documentation. Implement data transformation, mapping, and ETL processes for JSON and XML payloads. Develop and optimize SQL queries and batch processing for data validation and reconciliation. Implement asynchronous, dependency-injected, and SOLID-based solutions with unit and integration tests. Deploy and operate cloud-native components using Azure Functions, App Services, Azure SQL, Service Bus, and Azure Storage. Monitor applications and integrations using Application Insights and related monitoring tools. Collaborate with Product Owners, Business Analysts, and stakeholders to gather requirements and deliver integration solutions. Use AI-assisted development tools (GitHub Copilot, Microsoft Copilot) to generate, test, document, and validate code and to improve developer workflows. Review and validate AI-generated code, maintain code quality, and apply prompt engineering for development tasks. Requirements 5+ years of professional backend development experience with C# and .NET Core / .NET 6+. Proven experience designing and developing REST APIs and OpenAPI/Swagger. Strong experience with JSON and XML processing, transformation, and mapping. Practical experience building ETL processes, batch processing, and data validation/reconciliation. Solid SQL development skills and query optimization experience. Solid experience with Azure DevOps or similar DevOps tools for development, deployment, or CI/CD workflows. Hands-on experience with Microsoft Azure services: Azure Functions, Azure App Services, Azure SQL, Azure Service Bus, and Azure Storage. Experience with API security concepts (OAuth, authentication, authorization). Competence in object-oriented design, SOLID principles, dependency injection, and asynchronous programming. Experience writing unit and integration tests and maintaining testable codebases. Demonstrated use of AI-assisted development tools such as GitHub Copilot or Microsoft Copilot and ability to review and validate AI-generated code. Strong communication skills and experience collaborating in Agile, cross-functional teams with Product Owners and Business Analysts. Experience designing or working with enterprise system integrations, ideally involving product data, PIM, MDM, PLM, eCommerce, marketplace, or syndication platforms.
Nice to Have
Direct InRiver PIM development or customization experience. Experience with product information management, product enrichment workflows, or product syndication. Familiarity with PLM, MDM, or product catalog management domains. Experience with advanced AI tools or practices such as GitHub Copilot Enterprise, Microsoft Copilot Studio, Azure OpenAI, RAG workflows, AI-assisted development workflows, or Responsible AI / AI governance practices. Experience with marketplace integrations, eCommerce platforms, or downstream product syndication platforms. Experience with similar PIM platforms such as Akeneo, Salsify, Pimcore, Stibo Systems STEP, or Riversand. Engagement & Logistics Engagement Length: From 6 to 11 months, with possibility of extension. Time Zone: EST Overtime Required: No Equipment: BYOD (Bring Your Own Device) Selection process Meeting with Resilient Co. team. First technical interview (30 mins) client technical interview (30 mins) Possibly a second client interview (30 mins) \n \n