Senior C# Backend Engineer

<p><strong>About Goods &amp; Services</strong><br>&nbsp;&nbsp;<br>Goods &amp; Services is a product design and engineering company.&nbsp;</p> <p>We solve mission-critical challenges for some of the world’s largest enterprises, with deep expertise in highly regulated industries—including <strong>life sciences</strong> and <strong>financial services</strong>. Our <strong>design-led</strong> approach allows us to apply cutting-edge capabilities in <strong>AI,</strong> <strong>Data </strong>and <strong>Hardware Engineering</strong> to companies of any size.&nbsp;</p> <p>Headquartered in the <strong>United States</strong>, we operate regional development centers in <strong>Mexico </strong>and the <strong>United Kingdom</strong>. This global footprint—anchored by our <strong>nearshore </strong>model—enables us to deliver at scale with the speed, efficiency, and cultural alignment our clients expect.</p> <p><strong>About the job</strong><br>&nbsp;&nbsp;<br>Goods &amp; Services is looking for a&nbsp;<strong>Senior C# Backend Engineer</strong> with expertise in workflow orchestration, state management, and backend service design. Experienced in modernizing legacy systems, building reliable analyzer integrations, and delivering scalable, event-driven solutions.<br><strong>Location:&nbsp;<span data-olk-copy-source="MessageBody">Loveland, Colorado.</span></strong></p> <p><strong>What you’ll do:</strong></p> <ul> <li>Develop and maintain analyzer workflow logic within the ECL platform, owning the backend processes that drive analyzer operations end-to-end</li> <li>Implement and extend workflow orchestration — managing analyzer state transitions, operational sequencing, and runtime event handling</li> <li>Collaborate with the Analyzer Integration Engineer on the communication layer between ECL and connected analyzers</li> <li>Support the DCU modernization effort by identifying workflow logic that can be extracted and repackaged into shared .NET libraries</li> <li>Work with QA to ensure workflow correctness and reliability across analyzer types and edge cases</li> <li>Participate in knowledge transfer from departing Hydra resources to preserve continuity of analyzer workflow behavior.</li> </ul> <p><strong>What you’ll need:</strong></p> <ul> <li>5+ years of professional C# / .NET backend development experience</li> <li>Experience building workflow or orchestration systems — state machines, process sequencing, or similar patterns</li> <li>Solid understanding of backend service design and inter-service communication</li> <li>Ability to work within and around legacy codebases without breaking production.</li> <li>Collaborative approach to working alongside integration and infrastructure engineers.</li> </ul> <p><strong>Nice to have:</strong></p> <ul> <li>Exposure to medical device, laboratory, or instrument integration workflows</li> <li>Familiarity with .NET Framework 4.x and modern .NET migration patterns</li> <li>Experience with Azure Service Bus or event-driven messaging</li> <li>Background picking up ownership of an inherited or underdocumented system</li> </ul>