Senior Test Engineer

Location: Tucson, AZ, Alexandria, VA, St. Louis, MO, Gaithersburg, MD, Chantilly, VA, Englewood, CO

Time Type: Full time

Job Description

Job Description:

Make an Impact Where Innovation Meets Mission Success

At Leidos, we’re solving some of the nation’s most complex technical challenges by delivering mission-critical capabilities to our customers. We’re looking for a passionate Senior Test Engineer to join the Chinook Program to support one of our customers’ applications, a critical capability that enables operational success through reliable, high-quality software solutions.

If you’re energized by building exceptional software, leading testing efforts, and collaborating with talented engineers in a fast-paced Agile environment, this is your opportunity to make a meaningful impact.

Why Join Leidos?

You’ll work alongside some of the brightest minds in technology, solving complex challenges while delivering capabilities that truly matter. We offer meaningful work, opportunities for professional growth, competitive benefits, and the chance to make a lasting impact.

Position may be performed in the following locations below. 

• Gaithersburg, MD

• Alexandria, VA
• Chantilly, VA
• Englewood, CO
• St. Louis, MO
• Tucson, AZ 

Clearance Level Required:

Active Top Secret/SCI with the ability to successfully pass a Polygraph examination.

Primary Responsibilities:

• Lead planning, design, development, and execution of comprehensive test strategies.
• Develop and maintain automated and manual test cases for web-based and enterprise applications.
• Partner with software developers, systems engineers, and stakeholders to ensure quality throughout the software development lifecycle.
• Perform functional, integration, regression, system, and performance testing.
• Identify, document, prioritize, and track software defects through resolution.
• Support CI/CD pipelines by integrating automated testing into DevSecOps workflows.
• Champion testing best practices across the team.
• Contribute to continuous process improvements that enhance software quality and program success.

Basic Qualifications:

• US citizenship is required per contract.
• Bachelor's degree in Computer Science, Engineering, Information Technology or related field and 8-12 years of prior relevant experience or Master’s with 6-10 years of prior relevant experience.
• 8+ years of software testing or quality engineering experience.
• Experience testing enterprise applications throughout the software development lifecycle.
• Strong understanding of Agile methodologies and CI/CD processes.
• Experience developing automated test solutions.
• Knowledge of functional, integration, regression, system, and performance testing methodologies.
• Strong analytical and troubleshooting skills.
• Ability to communicate results and issues to technical and non-technical customer stakeholders.

Preferred Qualifications:

• Familiarity with automated testing frameworks (i.e., Playwright, Cypress, etc.) and scripting languages (JavaScript, Python).
• Familiarity with enterprise applications and large-scale systems.
• Experience with API, UI, database, and performance testing.
• Knowledge of cloud-native applications and containerized environments.
• Certifications such as ISTQB, CASTP, CAST, CSTE, Security+, or similar.

#Chinook

#NSBAA

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

August 5, 2026

Pay Range:

Pay Range $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.