Senior Systems Engineer

Salary: $109000 - 201000 per year Requirements: Bachelors Degree and a minimum of 6 years of relevant experience Graduate Degree with at least 4 years related experience In the absence of a degree, a minimum of 10 years of related experience Active Top Secret/SCI clearance with CI Polygraph Over 5 years of experience in software integration and testing, specifically focusing on user acceptance testing (UAT) Experience in developing and implementing both manual and automated software tests Familiarity with industry-standard test automation tools, such as Test Complete or Selenium Proficiency in industry-accepted requirements repositories and defect tracking tools (e.g., Backlog, Bugzilla, Jira, etc.) Responsibilities: Design, create, and manage comprehensive test cases that correlate with requirements and user stories Conduct software testing sessions utilizing industry-standard testing tools Actively take part in User Acceptance Testing (UAT) and Government Acceptance Testing (GGAT) initiatives Identify and document bugs, issues, inconsistencies, or failed test cases using a government defect tracking tool Generate and deliver test reports while presenting findings to relevant project stakeholders Independently develop and adhere to precise test scripts with meticulous attention to detail, documenting all outcomes Utilize strong written and verbal communication skills, particularly in updating senior leadership Operate effectively with minimal supervision Technologies: Support JIRA Security Selenium ISTQB More: At L3Harris, we are committed to attracting and nurturing high-performing talent who are enthusiastic about their work. Our team is united by a strong focus on our customers missions and our shared pursuit of professional development. We offer an inclusive and dynamic work environment designed to foster empowerment and achieve work-life balance. Our culture emphasizes unwavering values, dedication to our communities, and a commitment to excellence across all our endeavors. As the Trusted Disruptor in the defense technology sector, we prioritize the critical needs of our clients, delivering comprehensive technology solutions that span space, air, land, sea, and cyber domains in support of national security. We provide competitive salary packages and a comprehensive benefits suite, including health insurance, 401(k) matching, flexible spending accounts, and generous paid time off. This role is based in Springfield, VA, and operates on a 5/8 schedule from Monday to Friday. last updated 28 week of 2026