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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack eCommerce Developer (.NET/C#) - **Company:** Copeland LP - **Location:** St. Louis, MO, United States - **Experience:** Experienced - **Contract:** Temporary contract - **Skills:** HTML, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Applications Architecture, Application Performance Management, Microsoft Azure, C Sharp (Programming Language), Cascading Style Sheets (CSS), Cloud Computing, Cloud Engineering, Code Review, Databases, Continuous Integration, Relational Databases, Software Debugging, Dependency Injection, Revision Control Systems, Microsoft SQL Server, Object-Oriented Software Development, Performance Tuning, Next.js, Systems Integration, TypeScript, Web Performance Optimization, Enterprise Software Applications, ReactJS, Git, AngularJS, Information Technology, Front End Software Development, Api Design, Optimizely - **Published:** October 26, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3472135490&tx=DT10697UTZ&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54 ## About the Role Whether you are a professional looking for a career change, an undergraduate student exploring your first opportunity, or recent graduate with an advanced degree, we have opportunities that will allow you to innovate, be challenged and make an impact. Join our team and start your journey today!, You will design, develop, and support enterprise eCommerce solutions using .NET/C# and Optimizely Configured Commerce (formerly InsiteCommerce). Direct Optimizely experience is preferred but not required; we are also seeking strong .NET/C# engineers with enterprise eCommerce experience who can quickly learn the platform., * Bachelor's degree in Computer Science or a related field; equivalent combinations of education and experience will be considered. * 3-5 years of experience developing enterprise eCommerce applications, preferably supporting both B2B and B2C business models. * Direct experience with Optimizely Configured Commerce/InsiteCommerce is preferred but not required. * Strong proficiency in .NET and C#, including object-oriented design, dependency injection, API development, debugging, testing, and application architecture. * Understanding of enterprise commerce platforms, API-driven integrations, and distributed application architectures. * Experience integrating commerce applications with enterprise systems such as ERP, CRM, PIM, payment, identity, pricing, inventory, or order management solutions. * Working knowledge of modern front-end technologies such as HTML, CSS, JavaScript/TypeScript, React, or Angular, and the ability to collaborate effectively with front-end developers. * Strong understanding of eCommerce concepts including catalogs, pricing, account structures, permissions, ordering workflows, checkout, order history, and customer self-service features. * Experience with SQL Server or other relational databases, including data modeling, troubleshooting, and performance tuning. * Experience with Git or other source control systems. * Strong problem-solving, troubleshooting, and debugging skills. * Demonstrated ability to quickly learn and become productive within new enterprise platforms and technologies. * Authorization to work in the United States without sponsorship now or in the future. Temporary visas including F-1 (OPT/STEM), H-1B, L, B, J, or TN are not eligible for this opportunity., * Experience with Microsoft Azure, cloud-native architectures, observability, monitoring, and CI/CD practices. * Experience with Optimizely Configured Commerce/InsiteCommerce or another enterprise eCommerce platform. * Experience with headless or composable commerce architectures and modern front-end frameworks such as React or Next.js. * Knowledge of web performance optimization and application scalability best practices. * Experience supporting advanced B2B commerce capabilities, including contract pricing, customer-specific catalogs, quote-to-order processes, approval workflows, PunchOut, and complex account hierarchies. * Experience working within Agile product teams using Azure DevOps or similar delivery and backlog management tools., Copeland will only employ those who are legally authorized to work in the United States. This is not a position for which sponsorship will be provided. Individuals with temporary visas such as E, F-1 with OPT or CPT, H-1, H-2, L-1, B, J or TN, or who need sponsorship for work authorization now or in the future, are not eligible for hire. ## Description * Develop, customize, and maintain enterprise B2B and B2C eCommerce capabilities on Optimizely Configured Commerce using modern .NET/C# development practices. * Design and implement scalable commerce functionality, including product discovery, customer accounts, pricing, cart, checkout, ordering, and self-service experiences. * Partner with product owners, architects, developers, and business stakeholders to translate business requirements into maintainable technical solutions. * Design, develop, and support integrations with ERP, CRM, PIM, DAM, identity, payment, tax, pricing, inventory, order management, and fulfillment systems using APIs and event-driven integration patterns. * Optimize application performance, resiliency, scalability, accessibility, and SEO across the commerce platform. * Troubleshoot issues across application, API, integration, database, and enterprise-system layers, identify root causes, and implement long-term solutions. * Participate in code reviews and promote coding standards, quality, and best practices. * Stay current with modern commerce technologies, .NET development practices, cloud technologies, and Optimizely platform capabilities.