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Senior Software Test Engineer (TS/SCI) Verified today

Vantor · Herndon, VA · Production · first seen 2026-09-16
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About the Role

This position requires an active U.S. Government Security Clearance at the TS/SCI level.

You will support a large-scale big data analytics platform serving U.S. Government intelligence analysts. Working closely with software engineers, systems engineers, DevOps personnel, and end users, you will ensure the quality, reliability, performance, and usability of mission-critical applications and data services. This role demands strong analytical skills, hands-on testing experience in complex distributed systems, and the ability to operate effectively in an Agile development environment supporting national security missions.

Your Responsibilities

  • Design, develop, and execute manual and automated test plans, test cases, and test procedures.
  • Validate functionality, performance, scalability, and reliability of web-based and data-centric applications.
  • Perform integration, regression, system, and user acceptance testing across distributed environments.
  • Identify, document, track, and verify software defects using issue tracking tools.
  • Collaborate with developers, product owners, and system administrators to troubleshoot and resolve issues.
  • Support CI/CD testing activities and participate in Agile ceremonies, including sprint planning and retrospectives.
  • Verify data integrity and data flow across large-scale analytics and ingestion pipelines.
  • Contribute to test automation frameworks and continuous quality improvement initiatives.
  • Rigorously document detailed test processes.

Minimum Qualifications

  • U.S. citizenship and an active TS/SCI clearance mandatory for consideration. Must be willing to obtain a CI Poly.
  • Minimum of 14 years of total professional experience in a technical support role, of which 5 or more years in software testing, quality assurance, or related technical roles.
  • Experience testing web applications, APIs, and distributed systems in a variety of environments.
  • Knowledge of performance testing and security testing methodologies.
  • Familiarity with Agile software development methodologies and DevOps practices.
  • Experience with automated testing tools and scripting languages (e.g., Playwright, Selenium, Cypress, Python, JavaScript, or similar).
  • Understanding of software defect tracking and test management tools such as Jira, TestRail, or equivalent.
  • Demonstrated self-starter who consistently takes initiative with limited guidance and instruction.
  • BS in Systems Engineering, Geographic Information Systems (GIS), Computer Systems Analysis, Electrical Engineering, Software Engineering, or equivalent or related technical field.
  • SCIF presence a minimum of 3 days per week, as program needs dictate.

Preferred Qualifications

  • Familiarity with big data technologies such as Hadoop, Spark, Kafka, Elasticsearch, or similar platforms.
  • Experience testing cloud-native applications in AWS, Azure, or Kubernetes environments.
  • Experience with CI/CD pipelines and tools such as Jenkins, GitLab CI, or GitHub Actions.
  • ISTQB or other software testing certifications.
  • Experience working in high-availability, mission-critical production environments.
  • Experience as a military or intelligence analyst, supporting the military or IC, or knowledge of IC PED systems.

Compensation and Benefits

Base pay for the Washington, DC metropolitan area: $120,000 to $160,000 to $176,000 annually. Pay for other locations will be adjusted based on geographic cost of labor.

Vantor offers a competitive total rewards package including 401(k) with company match, mental health resources, student loan repayment assistance, adoption reimbursement, and pet insurance.

Location and Schedule

Herndon, VA. SCIF presence required a minimum of 3 days per week.