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General information

Requisition #
R65346
Locations
USA-VA-Herndon
Posting Date
01/22/2026
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

MANTECH is seeking a Software Tester in Herndon, VA. Join a high performing team of Software Developers, DevOps Engineers and Data Engineers delivering automation and big data analytics for the Intelligence community. The Software Tester will conduct testing and quality assurance as part of an elite team that builds applications, automates processes within the operational environment, and enables the customer to be able to measure system security and compliance levels.
 

Responsibilities include, but are not limited to:

  • Execute all aspects of software testing (manual or automated)
  • Test application functionality that our customers use to demonstrate cybersecurity compliance and protection from threats
  • Enhance the software testing capabilities for our customer’s GOTS applications
  • Act as a central point of contact, with responsibility for software testing activities
  • Learn the applications and create test cases for each new additional feature and function of the applications
  • Perform regression testing to ensure the integrity of the product
  • Include clear screenshots/graphics and descriptions of failed tests in the test documentation
  • Understand the user experience with the applications by attending user forums to hear the issues that users are having with the applications or processes supporting them
  • Collaborate with developers to resolve identified bugs or defects and verify fixes

Required Qualifications:

  • 5+ years of experience in software testing
  • Experience in testing and debugging COTS/GOTS software
  • Detail oriented with strong analytical or problem-solving skills; ability to identify edge cases
  • Experience with adapting to changing priorities
  • Experience successfully performing as an individual contributor and collaborating within a team

Preferred Qualifications

  • Experience with Selenium or other testing automation tools for efficiency
  • Experience testing in Linux and Windows environments

Clearance Required: 

  • Active/Current TS/SCI with polygraph

Physical Requirements:

  • Must be able to remain in a stationary position 50%

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.