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.
• Maintain a positive, proactive, and collaborative attitude, contributing to a productive team culture and demonstrating enthusiasm for solving complex challenges.
• 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.

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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.