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# Specialist Software Test Engineer, Avionics (Safety-Critical Flight Software)

- **Company:** Aries Aero Systems
- **Location:** Tustin, CA, United States
- **Salary:** $208,000.0 - $312,000.0
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Automation of Tests, Unit Testing, Code Coverage, Data Transmissions, Ethernet, Hardware-In-The-Loop Simulation, LabVIEW, VectorCAST, RS-232, Verification and Validation (Software), Strategies of Testing, Safety Critical Systems, Software Troubleshooting, System-level Testing, Integration Tests, NI Veristand
- **Published:** October 12, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=c2e83fe3a62ac94f

## About the Role

* B.S. in Engineering from an accredited university
 * 12+ years of relevant integration and testing experience in aerospace or a comparable field
 * Strong background in embedded system hardware and software
 * Advanced Python development skills
 * Experience with requirements-based testing and verification of safety-critical systems
 * Hands-on experience with VectorCAST or an equivalent unit test framework
 * Demonstrated experience developing test benches and automated test infrastructure
 * Experience with both component-level and system-level testing
 * Proven ability to diagnose complex electro-mechanical systems
 * Working knowledge of redundant system design for safety-critical applications
 * Familiarity with DO-178, DO-254, or similarly rigorous certification standards
 * Proficiency with digital communication protocols: RS-232, RS-422, RS-485, Ethernet, MIL-STD-1553, CAN
 * Strong troubleshooting, organizational, and communication skills
 * Adaptable mindset, with the ability to incorporate new ideas and shift strategies when needed

Preferred

 * Experience with LabVIEW or NI VeriStand

## Description

Our client is seeking an experienced Specialist Software Test Engineer to join its Avionics organization and verify the safety-critical flight software behind its human spaceflight systems. This is a hands-on, high-impact role. You will shape test strategy, tools, and processes, mentor junior engineers, and champion testing best practices across the team.

Principal Duties

 * Lead and support verification and validation of safety-critical flight software
 * Develop advanced code coverage, regression, and automated testing tools
 * Serve as the team's subject matter expert on software testing methodologies and best practices
 * Review and approve test cases for component-level and integrated test bench environments
 * Support the development and evolution of hardware-in-the-loop (HIL) test systems
 * Diagnose and troubleshoot complex software and electro-mechanical system issues
 * Mentor junior engineers and help build a culture of technical excellence
 * Collaborate cross-functionally to drive projects to completion and meet mission-critical goals