Mission-Critical Software Test Engineer (Level 2) – TS/SCI

J T; Columbia (MD); On-site; USD 110,000 - 133,000; Full time

Benefits offered by this job

Health, dental & vision insurance

Paid time off

401(k) retirement plan with company-m.

Tuition reimbursement

Job summary

J T in Columbia, MD is seeking an experienced Software Test Engineer (Level 2) to support full-lifecycle software testing, automated test framework development, and system integration for mission-critical systems.

You will design test plans, develop automated tests in Python, and execute performance, load, and security testing across Linux and Windows environments, collaborating with development teams to resolve issues and ensure quality.

Qualifications

• Bachelor’s degree in Computer Science or a related discipline with 6+ years of Software Test Engineering experience on programs of similar scope and complexity, OR Master’s degree with 4+ years (Master's substituting for 2 years), OR 10 years without a degree.
• Active TS/SCI with Polygraph clearance.
• Experience in full lifecycle software testing for mission‑critical systems.
• Hands-on testing across Linux and Windows environments.
• Familiarity with security testing and data interface testing.

Responsibilities

• Design, build, execute, and maintain test plans, test cases, automated test suites, and testing workflows.
• Provision, configure, and maintain dedicated test environments and automated testing infrastructure.
• Perform integration & testing and acceptance testing to ensure adherence to requirements.
• Develop automated test scripts and capabilities using Python.
• Execute performance, load, stress, interface, and security testing using code coverage tools.
• Configure, troubleshoot, and maintain Linux and Windows operating systems and test applications.
• Document test results, log discrepancies, and track remediations through verification.
• Support hardware problem dispatch and troubleshooting workflows in test labs.

Skills

Test planning

Automation

Collaboration

Problem solving

Education

Bachelor’s degree in Computer Science or related

Master’s degree in Computer Science or related

10 years of relevant Software Test Engineering experience without a degree

Tools

Python

Job description

J T in Columbia, MD is seeking an experienced Software Test Engineer (Level 2) to support full-lifecycle software testing, automated test framework development, and system integration for mission-critical systems.

You will design test plans, develop automated tests in Python, and execute performance, load, and security testing across Linux and Windows environments, collaborating with development teams to resolve issues and ensure quality.