Senior Software Engineer- Test

• Building and maintaining UI Test Automation infrastructure
• Developing and maintaining a suite of UI driven end-to-end tests
• Ensuring execution environments are maintained including simulation, HIL and on system
• Building out automated test run infrastructure and monitoring CI/CD
• Leveraging AI tooling to improve our automated testing process including metrics and reports
• Documenting tests, organizing test reviews and communicating test coverage clearly to stakeholders
• Assisting with our UI release pipeline and release documentation
• Basic Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience
• Minimum of 5 years of professional software development in test, test automation, or software engineering experience
• Experience building and maintaining end-to-end automated test suites for web-based applications
• Strong working knowledge of JavaScript and TypeScript
• Experience testing React applications and modern front-end architectures
• Experience with automated testing in CI/CD environments, including test execution, failure triage, and reporting
• Experience developing test plans, test cases, and coverage strategies aligned to product and engineering requirements
• Experience working with cross-functional teams to validate features, triage issues, and improve product quality
• Strong written and verbal communication skills, including communicating test status, release risk, and quality outcomes to stakeholders
• Preferred Skills and Experience:
• Experience testing across simulated, hardware-in-the-loop, or production-representative environments
• Hands-on experience with Playwright UI automation and regression testing
• Experience building/maintaining test infrastructure and tooling
• Familiarity with release validation, release documentation, and signoff processes
• Experience monitoring and improving CI health, including flaky test reduction and test stability improvements
• Experience with unit, integration, and API testing frameworks such as Vitest, Jest, or similar tools
• Additional Requirements:
• This is a hybrid role based in Torrance, CA, with an expectation of 4 days per week in the office to support team collaboration and cross-functional alignment.
• ITAR REQUIREMENTS:
• To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here .
• At Epirus, you’ll work with technical peers and great people—and get first crack at some of the defining technology challenges of our time. Here, “impossible” is just a challenge. We're a diverse, fast-growing team of change-makers fueling the future of energy with revolutionary solutions. Join us and rewrite the rules.

Epirus is a high-growth technology company dedicated to overcoming the asymmetric challenges inherent to the future of national security. Epirus' flagship product, Leonidas, is a software-defined system built using intelligent power management techniques which allow power-hungry systems to do more with less. Job Summary: We're looking for a Senior Software Development Engineer in Test with solid experience testing web-based UIs. This is a great opportunity to help define our end-to-end automation stack, joining a team of skilled software engineers developing across the full stack down to bare metal. We're tackling new and critical problems, building products ranging from energy weapons to AI-powered sensors and drone swarm defense. As we enhance, scale, and deploy our systems, we need SDETs who are eager to learn, contribute meaningfully, and grow their skills alongside a talented team. Responsibilities: