Software Test Engineers

Looking for an opportunity to make an impact? We’re hiring Software Test Engineers at multiple levels. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Your greatest work is ahead! Leidos Defense Sensors is seeking multiple Software Test Engineers of various levels to join our Sensor Research and Analysis Division and support missile defense programs. The ideal candidates will possess strong analytical and problem‑solving abilities, collaborate effectively in a team environment, and build solid working relationships with peers and technical staff across the program. In this role, you will work directly with Agile Software Development teams to help achieve key program objectives in support of our national defense. If this sounds like the kind of environment where you can thrive, keep reading! Primary Responsibilities Design, document, and execute test procedures to verify requirements/features Build complex, meaningful test scenarios for modeling and simulation–based systems Capture and communicate test results clearly and effectively Collaborate with stakeholders and Government customers to verify requirements Work as part of an Agile team and participate in all Agile ceremonies, including PI planning, sprint planning, retrospectives, and demos. Basic Qualifications This posting is for multiple opportunities ranging in years of experience. Level of opportunity, including compensation, will be matched to a candidate's experience. If you’re excited about the work but your experience level differs – PLEASE APPLY! Bachelor of Science in Computer Science or Software Engineering or equivalent degree from an ABET-accredited institution plus 2-4 years of demonstrated performance in the design, development, and testing of real-time software applications and simulations or Masters in Computer Science or Software Engineering or equivalent degree from an ABET-accredited institution with less than 2 years of demonstrated performance in the design, development, and testing of real-time software applications and simulations Experience with GitLab/Git Experience with Red Hat Enterprise Linux OS Knowledge of Agile methodologies, such as the Scaled Agile Framework (SAFe), and application of the Agile methodologies within a technical/engineering environment. Strong written and verbal communication skills with the ability to create and deliver presentations Must be a US citizen possess and maintain an active DoD Secret clearance Candidate must be a resident of the North Alabama area to provide full time onsite support Preferred Qualifications Test automation or analysis automation experience Agile Scrum experience Familiarity with Java or UI applications Experience with Jira or similar Agile/project management tools Exposure to MDA sensors and/or missile defense systems Experience with modeling and simulation tools Systems engineering familiarity If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: July 8, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $69,550.00 - $125,725.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here. Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to View email address on click.appcast.io. Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.