Principal C# Backend Engineer

About the job

Goods & Services is looking for a Principal C# Backend Engineer with expertise in workflow orchestration, state management, and backend service design. The role involves developing and maintaining analyzer workflow logic within the ECL platform, implementing and extending workflow orchestration, collaborating with the Analyzer Integration Engineer, supporting the DCU modernization effort, and participating in knowledge transfer.

• Develop and maintain analyzer workflow logic within the ECL platform, owning the backend processes that drive analyzer operations end-to-end
• Implement and extend workflow orchestration — managing analyzer state transitions, operational sequencing, and runtime event handling
• Collaborate with the Analyzer Integration Engineer on the communication layer between ECL and connected analyzers
• Support the DCU modernization effort by identifying workflow logic that can be extracted and repackaged into shared .NET libraries
• Work with QA to ensure workflow correctness and reliability across analyzer types and edge cases
• Participate in knowledge transfer from departing Hydra resources to preserve continuity of analyzer workflow behavior

Requirements

• 7+ years of professional C# / .NET backend development experience
• Experience building workflow or orchestration systems — state machines, process sequencing, or similar patterns
• Solid understanding of backend service design and inter-service communication
• Able to work within and around legacy codebases without breaking production
• Collaborative approach to working alongside integration and infrastructure engineers

Qualifications

• Exposure to medical device, laboratory, or instrument integration workflows
• Familiarity with .NET Framework 4.x and modern .NET migration patterns
• Experience with Azure Service Bus or event-driven messaging
• Background picking up ownership of an inherited or underdocumented system