Software Test Engineer TS/SCI Polygraph

Leidos LLC; Hanover (MD); On-site; USD 87,000 - 157,000; Full time

Benefits offered by this job

Paid time off

11 paid holidays

401(k) with company match

Flexible schedules

Discounted stock purchase plan

Education and training support

Job summary

Leidos is seeking a Software Test Engineer to support testing for an Enterprise ICAM system within the National Security Sector (CABA). The role involves designing, executing, and documenting manual and automated tests, building test frameworks, and ensuring quality and backward compatibility in Agile settings.

Qualified candidates will have a TS/SCI clearance with polygraph, a computer engineering or CS degree, and 5+ years of software engineering experience, with 2+ years in SIGINT/IA/IT

Qualifications

• TS/SCI Clearance with polygraph on day one is required.
• Bachelor's degree or higher in computer engineering or computer science.
• 5+ years of software engineering experience.
• 2+ years’ work experience in SIGINT, IA, or IT domains.
• 4 years experience may substitute for a degree (total 9 years).

Responsibilities

• Collaborate with software engineers to design test strategies and QA approaches.
• Develop and maintain automated testing frameworks and test solutions.
• Execute functional, regression, integration, and acceptance testing across lifecycles.
• Identify, document, and track defects; analyze performance and reliability issues.
• Test applications in Windows and Linux/CentOS environments using tools like Behave, SoapUI, JUnit.

Skills

Test automation

Software testing

Agile testing

REST API testing

SQL

Scripting languages

Communication

Education

Bachelor's degree in computer engineering or computer science

Tools

Behave

SoapUI

JUnit

Windows

Linux/CentOS

Version control

Job description

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! Leidos is seeking a Software Test Engineer to support testing for an Enterprise ICAM system as part of a cross-functional Agile team. Our ideal candidate will design, execute, and document manuals and automated tests; develop test cases and automation frameworks; identify and track defects; analyze performance and system behavior; and perform continuous functional, integration, acceptance, and regression testing to ensure quality and backward compatibility.

Primary Responsibilities

• Collaborate with software engineers to design effective test strategies, test cases, and quality assurance approaches
• Develop and maintain automated testing frameworks, test harnesses, and both manual and automated test solutions
• Execute and manage functional, regression, integration, and acceptance testing across system lifecycles
• Identify, document, track, and help resolve defects while analyzing test results for performance, load, and reliability issues
• Test applications in Windows and Linux/CentOS environments using tools such as Behave, SoapUI, JUnit, and others
• Apply knowledge of REST APIs, JSON/XML, scripting languages, version control systems, SQL, and related technologies in testing processes
• Communicate technical findings clearly while working independently and within Agile teams to prioritize tasks and ensure compliance (including Section 508 accessibility)

Basic Qualifications

• TS/SCI Clearance with polygraph on day one (no exceptions)
• Bachelor's Degree or higher in computer engineering or in a field related to computer engineering or computer science disciplines is required.
• 5+ years of software engineering experience is required.
• 2+ years’ work experience in SIGINT, IA, or IT domains is required.
• 4 years of software engineering experience may be substituted for a bachelor’s degree, for a total of 9 years.

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business.

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.

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 $87,100.00 - $157,450.00 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 www.Leidos.com.

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 [e-mail].

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.