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# Software Test Engineer

- **Company:** Vantor Inc.
- **Location:** Herndon, VA, United States
- **Experience:** Expert
- **Salary:** $140,000.0 - $190,000.0
- **Contract:** Permanent contract
- **Skills:** Computer-Aided Design, Automation of Tests, Continuous Integration, Data Integrity, Distributed Systems, Issue Tracking Systems, Web Testing, Performance Testing, Api Management
- **Published:** October 19, 2026
- **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=3026984927-2

## About the Role

* Manual testing
 * Automated testing
 * Web application testing
 * API testing
 * Distributed systems testing
 * Performance testing
 * Security testing
 * Test automation scripting
 * Defect tracking
 * Data integrity validation

## Description

Design and execute manual and automated tests for web-based and data-centric applications on a large-scale analytics platform. Validate performance, reliability, scalability, data integrity, and usability across distributed systems. Collaborate with engineering and DevOps teams to resolve defects and support Agile and CI/CD quality processes. Requires U.S. citizenship and an active TS/SCI clearance; work at a SCIF at least three days per week.

Responsibilities

 * Design, develop, and execute manual and automated test plans, cases, and procedures.
 * Test application functionality, performance, scalability, reliability, and usability.
 * Perform integration, regression, system, and user acceptance testing across distributed environments.
 * Document, track, and verify software defects using issue tracking tools.
 * Collaborate with engineering, product, systems, and Dev
 * Ops teams to troubleshoot and resolve issues.
 * Verify data integrity and pipeline flows, support CI/CD testing, and document test processes.