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Senior Tester

Markon Chantilly, Virginia, United States

onsitefull-time

Salary: $130,000 - $160,000 / year

Posted Aug 28, 2026Apply by Sep 27, 2026

**Role & seniority: ** Senior Software Test Engineer (Intelligence Community customer)

**Location & work type: ** Not specified; U.S. IC customer support (TS/SCI required)

**Stack/tools: **

  • Testing: manual & automated testing, test plans/cases, regression/integration testing

  • Automation: Selenium WebDriver (or comparable tools)

  • Dev/PM tools: GitHub, Jira, Confluence

  • App tech: Java/J2EE, web-based enterprise applications

  • Methodologies: Agile/SAFe (desired)

**Top 3 responsibilities: **

  • Develop and execute test plans, test cases, and QA/QC methodologies for enterprise apps

  • Perform functional, regression, and integration testing (manual + automated) and determine defect root causes

  • Build/maintain automated testing solutions/frameworks and validate web application functionality vs requirements

**Must-have skills: **

  • 6+ years QA/testing experience with strong SDLC + QA practices

  • Experience testing Java/J2EE-based, web enterprise applications

  • Automated testing with Selenium WebDriver (or comparable)

  • Strong documentation/communication; defect tracking and reporting

  • Working knowledge of GitHub, Jira, Confluence

  • Security: Active TS/SCI + Full Scope Polygraph

**Nice-to-haves: **

  • Experience building/maintaining automated testing frameworks

  • SAFe/Agile team experience (SAFe specifically mentioned)

  • ISTQB (or comparable) testing certification

Full Description

Markon is seeking a Senior Software Test Engineer to support an Intelligence Community customer by developing and executing quality assurance methodologies for enterprise software applications. This role performs manual and automated testing to identify defects, validate system functionality, and ensure software solutions meet established requirements and quality standards. The Senior Software Test Engineer will collaborate with developers and Agile teams throughout the software development lifecycle to improve application quality, reliability, and performance.

Responsibilities

  • Develop and execute software test plans, test cases, and quality control methodologies for enterprise applications.
  • Perform functional, regression, integration, and automated testing to identify defects and determine root causes.
  • Test web-based applications and validate functionality against system and user requirements.
  • Develop and maintain automated test solutions and reusable testing frameworks.
  • Evaluate software, hardware, and associated documentation for quality and compliance.
  • Document, track, and communicate defects and test results using GitHub, Jira, and Confluence.
  • Participate in formal and informal software reviews throughout the development lifecycle.
  • Collaborate with developers and Agile teams to troubleshoot issues, improve test coverage, and deliver production-ready software.

Qualifications

  • Active TS/SCI clearance with Full Scope Polygraph required.
  • Bachelor's degree and 6+ years of relevant software testing, quality assurance, or software development experience.
  • Experience developing and executing software test plans and test cases.
  • Experience with GitHub, Jira, and Confluence.
  • Experience testing applications developed using Java/J2EE.
  • Experience developing automated tests using Selenium WebDriver or comparable automation tools.
  • Experience testing web-based enterprise applications.
  • Experience performing manual and automated software testing.
  • Strong understanding of software development lifecycle and quality assurance practices.
  • Strong analytical, troubleshooting, documentation, and communication skills.

Desired

  • Experience building and maintaining automated testing frameworks.
  • Experience working within SAFe or Agile development teams.
  • ISTQB Certified Tester or comparable software testing certification.
Manual TestingAutomated TestingSelenium WebDriverJava/J2EEGitHubJiraConfluenceTest PlanningRegression TestingIntegration TestingAgileSAFeQuality AssuranceRoot Cause AnalysisWeb Application TestingTS/SCI Clearancemulti-locationreview:company

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