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Actalent • Los Angeles, California, United States
Role & seniority: Software Development Engineer in Test (Contract) | Mid‑level to senior test engineer
Stack/tools: Python; Linux; hardware-in-the-loop testing; power systems (subsystems, batteries, solar arrays); APIs; automation frameworks; monitoring/alerting systems
Develop automated test cases for hardware-in-the-loop testing and verification of satellite power subsystems
Collaborate across hardware, software, and test infra teams; validate features using simulation data or HIL systems
Build/maintain APIs and monitoring to automate workflows and track system health and test coverage
4+ years non-internship software testing and test automation experience
Proficiency in Python scripting and Linux
Experience with hardware-in-the-loop testing (aerospace/defense preferred)
BS in CS/CE/EE
Ruby experience
System test verification in power conversion, power systems, solar, batteries, satellites/rockets
Systems engineering fundamentals; strong communication and data organization
Location & work type: Onsite contract role in Los Angeles, CA; full-time working environment with fast-paced verification campaigns
Notes: Role emphasizes test software development from requirements to deployment, aircraft-style hardware validation, and scalable test processes.
Job Title: Software Development Engineer in TestJob Description
Join our Integrated Engineering Solutions Team as a Software Test Engineer to verify power system avionics hardware and power management algorithms/software. You will be involved in all phases of test software development from requirements through implementation, test, and deployment. Your role will focus on developing automated test cases for hardware-in-the-loop testing utilizing power emulation test racks and satellite flight hardware.
Responsibilities
Work with stakeholders, peer teams, and customers to build verification matrices and test cases for satellite power subsystems, batteries, and solar arrays. Collaborate with hardware, software, and test infrastructure teams to integrate, test, and validate new features using synthetic data in simulation environments or hardware-in-the-loop testbed systems. Develop and utilize monitoring and alerting systems to track space and ground infrastructure health and stability. Develop software systems in Python to automate operational workflows, reducing manual intervention and improving system efficiency. Build and maintain robust and well-documented APIs that enable engineers and partners to develop custom models, integrations, and test assertions.
Essential Skills
Proven experience in software test engineering, particularly with test case creation and system testing for hardware/software scenarios. Expertise in Python scripting and Linux. Experience with hardware-in-the-loop testing, especially in aerospace defense. Bachelor's degree in Computer Science, Computer Engineering, or Electrical Engineering. 4+ years of non-internship professional software development testing experience. 4+ years of experience building test automation frameworks and tools.
Additional Skills & Qualifications
Experience with Ruby. System test verification experience in power conversion, power systems, solar, battery, electric vehicles, satellites, or rockets. Understanding of systems engineering principles. Excellent data organization and communication skills. Ability to clearly and persuasively communicate ideas and concerns. Positive attitude and willingness to work hard.
Work Environment
This is a fast-paced, intellectually challenging position. You will verify product and system requirements through verification test campaigns across multiple venues, including hardware-in-the-loop testing and production acceptance testing. The role involves developing test processes and tools, including automation, to scale test campaigns while maintaining high standards of quality and test coverage. You will also perform tests on flight hardware and address issues found during test campaigns.
Job Type & Location
This is a Contract position based out of Los Angeles, CA.
Pay And Benefits
The pay range for this position is $60.00 - $75.00/hr.
Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave) Workplace Type This is a fully onsite position in Los Angeles,CA. Application Deadline This position is anticipated to close on Mar 12, 2026.
About Actalent
Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 30,000 consultants and more than 4,500 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500.
The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing due to a disability, please email actalentaccommodation@actalentservices.com for other accommodation options.