Middleware Software Engineer

Symmetrio is recruiting a Senior Middleware Software Engineer for our customer, a global conglomerate in the medical device space. This engineer will play a pivotal role in connecting embedded firmware systems with higherlevel software applications and clinical platforms. The ideal candidate will bring a strong background in C#, Visual Studio, .NET, API development, and realtime device communication, ideally within a regulated medical environment. This role is part of a highly collaborative engineering team focused on developing advanced technology for critical applications in the healthcare space. It offers a unique opportunity to work at the intersection of software, hardware, and realtime data systems.

Remote candidates will be considered but preference will be given to those located in Florida. Salary range is $125–160k depending on experience.

Remote candidates will be considered but preference will be given to those located in Florida. Salary range is $125160k depending on experience.

Responsibilities

• Design, develop, and maintain ASP.NET Web API applications for ingesting, processing, and exposing data from medical hardware systems.
• Integrate with hardware device APIs to collect, measure, and analyze ionizing radiation data for quality assurance.
• Implement realtime data streaming using SignalR, allowing clinicians and systems to interact with live device data.
• Maintain and improve Windows Communication Foundation (WCF) services and Windows Services for reliable transmission of data from distributed devices to onprem servers.
• Build and optimize data storageretrieval workflows using Entity Framework with SQL Server and MongoDB, including writing and optimizing SQL queries.
• Collaborate with firmware, hardware, software, and medical physics teams to identify systemlevel requirements and troubleshoot integration issues.
• Develop internal tools and utilities, potentially using WPF, to support operations and product diagnostics.
• Ensure all middleware components comply with FDA regulations and industry standards like IEC 62304, DICOM, and HL7.
• Participate in design reviews, risk analysis, and support testing and documentation required for regulated environments.
• Serve as a technical escalation point for product support teams.

• Requirements

  • 7+ years of experience in middleware, backend, or systems software engineering
  • Highly proficient in C#, Visual Studio, and .NET, including ASP.NET Web API and WCF.
  • Strong understanding of HTTP methods, Web APIs, and REST principles.
  • Experience developing and maintaining Windows Services.
  • Experience integrating with hardware or embedded systems APIs.
  • Proficiency with Entity Framework, SQL Server, and MongoDB, including writing and optimizing SQL queries.
  • Experience with realtime communication using SignalR or similar frameworks.
  • Familiarity with JSON and XML for data exchange and parsing.
  • Prior work with medical devices, oncologyradiation systems, or other regulated industries.
  • Strong testing and debugging skills across software and hardware boundaries.
  • Excellent documentation practices and communication skills.

  • Preferred

    • Background in radiation oncology, medical physics, or QA of therapy devices
    • Experience developing or supporting dose calibrators, PACSRIS, or clinical QA software
    • Understanding of FDA 21 CFR Part 820, ISO 13485, IEC 62304, or similar compliance frameworks
    • Prior experience delivering Tier 2 support or collaborating with R&D and product teams

    • Benefits

      • Health Care Plan (Medical, Dental & Vision)
      • Retirement Plan (401k, IRA)
      • Paid Time Off (Vacation, Sick & Public Holidays)