Hardware in the Loop Test Engineer
Leidos
- Location
- Huntsville, AL
- Work model
- On-Site
- Level
- Mid
- H-1B history
- 26 approvals (FY2023)
- Posted
- Sep 3, 2026
Skills
About this role
Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Are you ready for your next career challenge? Leidos Defense provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions. Leidos Defense is seeking a talented Hardware in the Loop Test Engineer to support Hypersonics programs. The selected candidate will support integration, verification, validation, and field-testing activities for advanced air and missile defense systems.
Primary Responsibilities
Contribute to the electrical engineering development, integration, and execution of Hardware-in-the-Loop (HWIL) test systems supporting avionics, embedded systems, electronic hardware, and associated software. Develop HWIL electrical architectures that provide representative interfaces between the system under test and the simulated environment. Design, integrate, and troubleshoot electrical interfaces including analog, digital, discrete, serial, Ethernet, power, and other system-specific interfaces. Develop and integrate signal conditioning, switching, loads, power supplies, signal generation, data acquisition, instrumentation, and other HWIL interface hardware. Interpret system requirements, electrical schematics, wiring diagrams, interface control documents, and equipment specifications to develop effective HWIL solutions. Develop and maintain HWIL interface designs, wiring, cable assemblies, electrical drawings, interface documentation, and configuration information. Select and configure laboratory and test equipment including oscilloscopes, digital multimeters, power supplies, electronic loads, signal generators, data acquisition systems, and related instrumentation. Support integration of real-time simulation platforms with electronic hardware and systems under test. Develop test cases and scenarios that exercise nominal, off-nominal, fault, startup, shutdown, degraded, and boundary operating conditions. Apply “test-like-you-fly” methodologies to ensure HWIL environments accurately represent operational system interfaces and conditions. Develop and implement automated test procedures and supporting software using Python, C/C++, C#, LabVIEW, MATLAB/Simulink, or similar tools. Integrate embedded software, firmware, and electronic hardware into HWIL environments to support system-level verification and validation. Troubleshoot complex electrical and system-level issues involving power, signal integrity, I/O, instrumentation, wiring, interfaces, communication buses, and HWIL equipment. Perform root-cause analysis of hardware and system failures and provide technical recommendations to electrical, software, firmware, and systems engineering teams. Analyze test data and instrumentation results to identify anomalies, characterize system performance, and support verification activities. Develop and maintain test requirements, procedures, test reports, electrical documentation, configuration records, and requirements traceability. Support automated regression testing and integration of HWIL test activities into software development and CI/CD environments. Maintain configuration control of HWIL hardware, electrical interfaces, instrumentation, test software, simulation models,