Sr Performance Test Engineer Jobs in Missouri (NOW HIRING)

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 

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.

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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.