Software Engineer HILs

Hermeus; Los Angeles (CA); On-site; USD 70,000 - 90,000; Full time

Job summary

A high-speed aircraft manufacturer in California is looking for a multidisciplinary engineer to design and maintain Hardware-in-the-Loop testbeds for hypersonic aircraft. The ideal candidate will have a degree in Engineering and experience in embedded systems testing, particularly HIL systems. Responsibilities include developing test scripts and collaborating with cross-functional teams to ensure product functionality and reliability. This role encourages fresh graduates with relevant project experience to apply.

Qualifications

• 2+ years of experience in embedded system or test engineering with HIL systems.
• Experience in developing and executing test cases for embedded control systems.
• Familiarity with communication protocols (CAN, Ethernet, RS-485).

Responsibilities

• Design, implement, and maintain HIL test benches including low voltage harnesses.
• Develop test scripts, models, and automation frameworks.
• Troubleshoot hardware and software issues on the HIL bench.

Skills

MATLAB/Simulink

Python

Problem-solving

Analytical skills

Education

Bachelor’s or Master’s degree in Engineering

Tools

dSPACE

NI PXI/VeriStand

Simulink Real-Time

Job description

Hermeus is a high-speed aircraft manufacturer focused on the rapid design, build, and test of high-Mach and hypersonic aircraft for the national interest. Working directly with the Department of Defense, Hermeus delivers capabilities that will ensure that our nation, and our allies, maintain an asymmetric advantage over any and all potential adversaries.

We are seeking a multidisciplinary engineer who will help us develop our next generation Hardware-in-the-Loop (HIL) testbeds for our hypersonic aircraft. In this role, you will be responsible for designing, developing, and maintaining HIL testbeds that will validate complex avionics systems. You will work closely with software, hardware, and systems engineers to ensure product reliability, functionality, and compliance with specifications.

We are open to hiring a fresh graduate with experience working on a highly integrated school project/team like Cubesat, Rocketry, Drone Racing or similar.

Key Responsibilities

• Design, implement, and maintain HIL test benches including low voltage harnesses.
• Develop test scripts, models, and automation frameworks to execute and validate embedded control software.
• Integrate HIL systems with other avionics components.
• Simulate sensor and actuator interfaces using real-time models and signal conditioning hardware.
• Perform SIL (Software-in-the-Loop) and HIL test workflows throughout the development lifecycle.
• Troubleshoot hardware and software issues on the HIL bench and work cross‑functionally to resolve defects.
• Create and maintain test documentation including test plans, test cases, and validation reports.
• Collaborate with system architects and software engineers to define test coverage and improve test strategies.

Required Qualifications

• Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, Mechatronics, or a related field.
• 2+ years of experience in embedded system or test engineering with HIL systems.
• Strong knowledge of MATLAB/Simulink and scripting languages (Python, Julia, etc.).
• Experience in developing and executing test cases for embedded control systems.
• Familiarity with communication protocols (CAN, Ethernet, RS-485).
• Strong problem‑solving and analytical skills.

Preferred Qualifications

• Hands‑on experience with one of the HIL platforms such as dSPACE, NI PXI/VeriStand, or Speedgoat with Simulink Real‑Time.
• Experience in automotive, aerospace, or industrial automation industries.
• Exposure to Agile development processes and CI/CD pipelines (e.g., Jenkins).
• Knowledge of safety‑critical systems and relevant standards (DO‑178C, ISO 26262, IEC 61508).
• Experience with automated testing frameworks or tools (ECU‑TEST, TestStand).
• Experience with requirements‑based testing and tools like DOORS, Polarion, or Jama.

Export Control Compliance

The person hired will have access to information and items subject to U.S. export controls, and therefore must be a “U.S. person” as defined by 22 C.F.R. §120.62.

Equal Opportunity

Hermeus is an Equal Opportunity Employer. Employment decisions are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.