Senior Software Tester: TS/SCI Poly | Web & API Testing

Millennium; Chantilly (VA); On-site; USD 75,000 - 95,000; Full time

Job summary

Millennium Corporation is seeking a Software Tester to support a program in Chantilly, VA. An active TS/SCI FS Poly is required for consideration.

The role involves manual and automated testing for web-based applications, contributing to test planning, and collaborating with a cross-functional Agile team. Candidates should have a Bachelor's degree in Computer Science or related field and 3–5 years of software testing experience. Strong analytical skills and experience with Selenium and API testing are essential.

Qualifications

• 3–5 years of professional software testing experience.
• Active TS/SCI with Polygraph.
• Strong experience with functional, regression, exploratory testing.

Responsibilities

• Execute manual testing for web-based applications.
• Develop and maintain automated test scripts using Selenium.
• Perform API testing and validate backend integrations.
• Collaborate daily with cross-functional team members.

Skills

Manual testing of web-based applications

Automated testing using Selenium

API testing

Analytical and problem-solving skills

Excellent communication skills

Education

Bachelor’s degree in Computer Science, Engineering, or related field

Tools

Selenium

Jira

SQL

Job description

Millennium Corporation is seeking a Software Tester to support a program in Chantilly, VA. An active TS/SCI FS Poly is required for consideration.

The role involves manual and automated testing for web-based applications, contributing to test planning, and collaborating with a cross-functional Agile team. Candidates should have a Bachelor's degree in Computer Science or related field and 3–5 years of software testing experience. Strong analytical skills and experience with Selenium and API testing are essential.