Leidos has a new and exciting opportunity for a Sr. RMF Security 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!
The Software Test Engineer will join an agile development team building a mobile‑focused user application. This role is responsible for ensuring product quality through both manual and automated testing of the user interface and backend components.
The engineer will proactively support all testing activities, collaborate with System Engineers, Developers, and fellow Testers, and contribute to accurate, well‑written test documentation. * *Note that this is not a senior position and looking for someone early in their career**
Required Qualifications:
Position requires US citizenship and an active Secret DoD security clearance
Bachelor’s Degree in Systems Engineering, Computer Science, or related field and 2-4 years of software development testing experience.
Experience with SKLs and ECUs.
At least 2 years of experience in software testing.
Experience with implementing regression testing for software.
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.
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.
Understanding of C++.
Experience in Agile development methodologies.
Experience with a version control system (e.g., Git, SVN).
Experience with an issue/problem tracking system (e.g., VersionOne, Jira).
Experience with continuous integration environments (e.g., Jenkins).
Desired Skills:
Experience using Squish for Qt.
Familiarity with Crypto and COMSEC
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.
May 12, 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 $59,150.00 - $106,925.00
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 is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health. The company's global workforce of 48,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $15.4 billion for the fiscal year ended December 29, 2023.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
