Leidos has a new and exciting opportunity for a Software Test Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more.**Join us and make a difference in National Security! **

Job Summary:

Leidos is seeking a Software Test Engineer. The Software Test Engineer will be part of a dynamic team working in an agile software development environment that is building a user application to run on mobile device form factors. The Software Test Engineer will be responsible for the quality of the developed product and participating in manual and automated testing operations.

This position requires someone who is proactive and passionate about ensuring the quality of software deliverables and can participate in both the manual and automated testing of user interface and backend software implementations effectively. In addition, the Software Test Engineer will work with System Engineers, Developers and other Testers to accurately author the test based documentation required for the project.

Primary Responsibilities:

• Author and execute manual and automated test cases to ensure product requirements are met.

• Author and maintain tools, techniques, and practices for assuring the testing of the product.

• Participate in agile planning events, analysis and design events, and reviews

• Ensure that quality checks and acceptance criteria are satisfied before code merges can occur.

• Ensure complete and timely reporting on bugs and test results.

• Identify, analyze, and document problems with program function, output, online screen, or content.

• Participate in product design reviews to provide input on functional requirements, product designs, schedules, or potential problems.

• Write testing documentation and help finalize all system and software documentation CDRLs for the program.

• Familiarity working on programs using the Agile Scrum methodology

Basic Qualifications:

• Position requires an active Secret security clearance

• Bachelor’s Degree in Systems Engineering, Computer Science, or related field and 4+ years of software development testing experience.

• At least 4+ years of experience in software testing and/or software development.

• Experience with a scripting language: Python, JavaScript, and related others.

• Experience with implementing regression testing for software.

• Experience performing “illity” testing, especially performance testing.

• Familiarity and/or experience using automated test tools on software projects.

• The ability to communicate effectively with both Product Owners and software developers.

• Knowledge of Agile Development methodologies.

• Excellent verbal and written communication skills.

• Proficiency with MS Office Products (i.e., Word, Excel, Visio, & PowerPoint).

• DoD 8570 approved security certification (i.e., Security +, CISSP, etc.) (Will be required 90 days after hire)

Preferred (some subset of the following):

• Ability to quickly become proficient in new tools/technologies.

• Ability to identify efficiencies and process improvements between the development and testing disciplines.

• Experience in Agile development methodologies.

• Experience with a version control system (e.g., Git, SVN).

• Experience with an issue/problem tracking system (e.g., Version One, Jira).

• Experience with continuous integration environments (e.g., Jenkins).

• Agile certification

• Knowledge of DevOps practices

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:

February 24, 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 $73,450.00 - $132,775.00

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.