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Principal Cyber Software Test Engineer Security Clearance

Job in Chantilly, Fairfax County, Virginia, 20151, USA
Listing for: Cornerstone Defense
Full Time position
Listed on 2026-06-09
Job specializations:
  • IT/Tech
    Systems Analyst, IT Consultant, Cybersecurity, Systems Engineer
Job Description & How to Apply Below
Position: Principal Cyber Software Test Engineer with Security Clearance
Basic Qualifications for a Principal Cyber Software Test Engineer:
* Candidate must currently have an active Secret security clearance or higher to be considered.
* Bachelors degree with 5 years of relevant experience, a Master's degree with 3 years of relevant experience, a PhD with 1 year of relevant experience, or 9 years of relevant experience in lieu of a degree.
* Experience with diverse software and/or hardware testing methods throughout the development lifecycle.
* Demonstrated ability to organize, prioritize, and self-manage multiple project tasks.
* Proficiency with computer hardware and software systems, and the ability to validate proper implementation and functionality between various systems and interfaces.
* Experience translating requirements and user stories into functional test plans.
* Ability to use strong analytical skills to identify, characterize and isolate issues, and troubleshoot to present options for correcting those issues.
* Excellent written and verbal communication skills in order to write well-articulated test plans and facilitate product demonstrations.
* Ability to articulate and document defects in a timely manner, and collaborate with the development team and management to prioritize bugs until resolution. Basic Qualifications for a Sr. Principal Cyber Software Test Engineer:
* Clearance:
Candidate must currently have an active Secret security clearance or higher to be considered.
* Bachelors degree with 8 years of relevant experience, a Master's degree with 6 years of relevant experience, a PhD with 4 years of relevant experience, or 12 years of relevant experience in lieu of a degree.
* Experience with diverse software and/or hardware testing methods throughout the development lifecycle.
* Demonstrated ability to organize, prioritize, and self-manage multiple project tasks.
* Proficiency with computer hardware and software systems, and the ability to validate proper implementation and functionality between various systems and interfaces.
* Experience translating requirements and user stories into functional test plans.
* Ability to use strong analytical skills to identify, characterize and isolate issues, and troubleshoot to present options for correcting those issues.
* Excellent written and verbal communication skills in order to write well-articulated test plans and facilitate product demonstrations.
* Ability to articulate and document defects in a timely manner and collaborate with the development team and management to prioritize bugs until resolution.

Preferred Qualifications for both levels:
* An active TS/SCI Clearance with Polygraph.
* Proficiency with writing custom automation scripts using a programming language (e.g., Python, JavaScript, etc.).
* Experience with testing mobile applications on Android devices.
* Experience with agile management software (e.g., Microsoft Azure Dev Ops, Jira, etc.).
* Experience with test automation to include design, development, and debugging of tests.
* Experience with test automation tools (e.g., Smart Bear Test Complete) and frameworks.
* Experience with installing virtual machines.
* Familiarity with Agile Scrum methodologies.
* Familiarity with computer security measures.
* Proficiency with UNIX command lines.
* Self-starter with the ability to pick up and learn new products with little supervision as well as provide leadership on assigned projects.
* Ability to provide testing best practices to other team members.
* Experience with providing test estimation to management and project teams.
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