Principal Test Engineer

Leidos LLC; Plyers Mill Estates (MD); On-site; USD 131,000 - 237,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% company match

Flexible schedules

Discounted stock purchase plans

Technical upskilling

Education and training support

Parental paid leave

Job summary

Leidos LLC seeks a Principal Test Engineer to drive automated testing across back-end and front-end systems in a commercial cloud environment. You will implement scripts, evaluate results, and integrate feedback into a CI/CD pipeline, with cross-training in systems engineering and security.

The role emphasizes automation, collaboration with Scrum roles, and hands-on use of Selenium, Katalon Studio, and JMeter within a SAFe/DevOps framework.

Qualifications

• Experience testing both back-end and front-end applications; scripting in Python to automate tasks.
• Knowledge of software performance testing practices and test case documentation.
• Experience with Commercial Cloud Platforms (AWS) and DevOps in SAFe environments.

Responsibilities

• Participate in Agile software development initiatives to support testing and feature delivery.
• Collaborate to assess StoryPoint/complexity for proper testing and user story acceptance.
• Develop automated test cases for GUI/COTS apps using Selenium and Katalon Studio.
• Leverage DevOps practices to maintain repeatability and configuration management of tests.
• Document end-to-end test narratives using JIRA/Confluence and support performance testing with tools like JMeter.

Skills

Python scripting

Automation testing

Selenium

Katalon Studio

JMeter

AWS

DevOps

CI/CD

SAFe Agile

Collaboration

Education

Bachelor's degree

Master's degree

Tools

Katalon Studio

JMeter

JIRA

Confluence

Job description

Leidos has an exciting opportunity for a Principal Test Engineer in our Intel Security Sector's Analysis Solutions Business Area. 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

As a Test Engineer on this program, you will have the opportunity to perform software development to implement scripts, evaluate test results, and feedback loops in a Continuous Integration Continuous Delivery Pipeline within a commercial cloud environment. Flexible cross-training to also provide systems engineering, software development, training, and security. Job duties are performed within a commercial cloud environment.

Responsibilities

• Participate in program Agile software development initiatives (standup, planning, increment planning) to support innovation and enhancement of custom applications through iteration/functionality testing
• Participate and collaborate with team members to assess StoryPoint/complexity efforts (using best practices) to ensure proper testing and delivery of functionality per User Story Acceptance Criteria
• Collaborate with team members (Scrum Master, Product Owner, Software Developers) to develop test approaches with emphasis on automation of recurring/regression test cases through selected toolsets
• Develop automated test cases using knowledge of custom Applications through designated GUI/COTS products (ex: Selenium and Katalon Studio)
• Leverage DevOps practices to ensure repeatability and Configuration Management of test cases/scripts are maintained and continuously improved
• Develop and document end-to-end functionality test case narratives using task management system (JIRA/Confluence) and support performance testing/evaluation activities using tools such as Jmeter

Basic Qualifications

In-depth experience testing both back-end and front-end applications processes, scripting languages (ex: Python) to automate tasks, and test data/script development Knowledge of or direct experience with software performance testing practices Direct experience with creation, authoring, execution and documentation of test cases/result sets for software products in an agile cadence Significant experience working/testing within Commercial Cloud Platforms (ex: AWS) and DevOps tools, and working in a SAFe Agile and DevOps development environment Demonstrated ability to work within collaborative environment to execute test cases complimentary to development efforts BS degree with and 12+ years of prior relevant experience or Master’s 10+ years of prior relevant experience. Will consider experience in lieu of a degree Clearance Required: Must have an active TS/SCI with Polygraph

Preferred Qualifications

Experience with administration of MS Windows Server or Linux environments (Lab or Personal development space) Experience reviewing output of CI jobs and capable of tracking test failures back to code changes that resulted in bugs Capable of review code check-ins to understand the impact of code changes on system functionality and potential applications bugs Direct experience with AWS environments 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 that disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Pay Range

Pay Range $131,300.00 - $237,350.00

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.

• 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.