Onsite TS/SCI Automated Test Engineer – Chantilly (Selenium/Playwright)

Ardent Principles, Inc.

Chantilly, Virginia, USFull-timeMidPosted Jun 25, 2026

SeleniumPlaywright

Best fit for

This role is best for mid-level QA engineers with hands-on experience in Selenium, Playwright open to working from Chantilly, Virginia, US.

Skills you need for this role

Detected from the job title, description, and tags.

Automation skills

Selenium — Still the most-asked browser automation framework in QA interviews and legacy suites.
Playwright — Modern cross-browser automation with auto-waits — increasingly the default at product companies.

Job description

Ardent Principles, Inc. is seeking an Automated Test Engineer to design and execute automated test scripts while validating software compatibility across various systems. Located in Chantilly, VA, this full-time position offers a competitive salary and comprehensive benefits including 100% employer-covered health insurance.The ideal candidate will have experience with Selenium and Playwright and a strong emphasis on quality assurance in software delivery. Join us to build innovative and secure solutions.#J-18808-Ljbffr

Job highlights

•Role: Onsite TS/SCI Automated Test Engineer – Chantilly (Selenium/Playwright)
•Company: Ardent Principles, Inc.
•Location: Chantilly, Virginia, US
•Type: Full-time
•Experience: Mid
•Seniority: Mid
•Posted: Jun 25, 2026

Key skills: Selenium · Playwright

How to prepare for this interview

A 5-step prep plan tailored to this job's stack.

1Revise Selenium deeply — locator strategy, waits, parallelisation, and how you'd structure the framework from scratch. Selenium interview Q&A →
2Read through the general QA/SDET interview prep guide to refresh core testing concepts. Job Interview Prep →
3Do at least one AI mock interview end-to-end so you're comfortable narrating your answers under time. AI Mock Interview →
4Run your CV through the ATS review so it clears keyword filters for this role before you apply. Resume ATS Review →

Likely interview questions for this role

Tuned to the stack we detected on this job.

Q1.Explain the Page Object Model and how you'd structure it in Selenium.
Q2.How do you handle dynamic waits without using Thread.sleep in Selenium?
Q3.How does Playwright's auto-waiting differ from Selenium's explicit waits?
Q4.Walk through how you'd parallelise Playwright tests in CI with sharding.
Q5.Walk me through a bug you found that shipped anyway — how did you handle it?

Rehearse with AI Mock Interview Full interview prep guide

Salary context

Compensation not disclosed.

Ardent Principles, Inc. hasn't disclosed a salary range for this mid-level role. Check our QA/SDET salary benchmarks to anchor your ask for Chantilly, Virginia, US.

See QA/SDET salary benchmarks →