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Jr Software Test Engineer Jobs in Belleville, IL

Mid-Level Test Engineer

Madison, IL · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Collinsville, IL · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Maryville, IL · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Hartford, IL · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Hazelwood, MO · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Fenton, MO · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Belleville, IL · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Arnold, MO · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Caseyville, IL · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

South Roxana, IL · On-site

$87K - $157K/yr

Description Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook ...

Mid-Level Test Engineer

Saint Louis, MO · On-site

$87K - $157K/yr

Are you passionate about delivering high-quality software that directly supports our nation's security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting ...

Senior Test Engineer

Saint Louis, MO · On-site

$107K - $195K/yr

If you're energized by building exceptional software, leading testing efforts, and collaborating ... test cases for web-based and enterprise applications. * Partner with software developers, systems ...

Senior Test Engineer

Wood River, IL · On-site

$107K - $195K/yr

If you're energized by building exceptional software, leading testing efforts, and collaborating ... test cases for web-based and enterprise applications. * Partner with software developers, systems ...

Senior Test Engineer

Fairview Heights, IL · On-site

$107K - $195K/yr

If you're energized by building exceptional software, leading testing efforts, and collaborating ... test cases for web-based and enterprise applications. * Partner with software developers, systems ...

Showing results 41-60

Jr Software Test Engineer information

See Belleville, IL salary details

$45.2K

$91.8K

$137.9K

How much do jr software test engineer jobs pay per year?

As of Sep 2, 2026, the average yearly pay for jr software test engineer in Belleville, IL is $91,829.00, according to ZipRecruiter salary data. Most workers in this role earn between $70,900.00 and $92,800.00 per year, depending on experience, location, and employer.

What is the difference between Jr Software Test Engineer vs Software Test Engineer?

AspectJr Software Test EngineerSoftware Test Engineer
Required CredentialsAssociate degree or relevant certification, basic testing knowledgeBachelor's degree in CS or related field, more experience
Work EnvironmentEntry-level testing teams, supervised tasksMore autonomous testing roles, complex projects
Employer & Industry UsageStartups, IT companies, software firmsEstablished companies, larger software development teams
Search & Comparison IntentEntry-level testing roles, career progressionMid-level testing positions, skill enhancement

The main difference between a Jr Software Test Engineer and a Software Test Engineer lies in experience, responsibilities, and independence. Jr Software Test Engineers are typically entry-level, focusing on basic testing tasks under supervision, while Software Test Engineers handle more complex testing activities with greater autonomy. Both roles are essential in software development, with the Jr role serving as a stepping stone to more advanced testing positions.

What are popular job titles related to Jr Software Test Engineer jobs in Belleville, IL?

For Jr Software Test Engineer jobs in Belleville, IL, the most frequently searched job titles are:

What job categories do people searching Jr Software Test Engineer jobs in Belleville, IL look for?

The top searched job categories for Jr Software Test Engineer jobs in Belleville, IL are:

What cities near Belleville, IL are hiring for Jr Software Test Engineer jobs?

Cities near Belleville, IL with the most Jr Software Test Engineer job openings:

Mid-Level Test Engineer

Leidos

Madison, IL • On-site

$87K - $157K/yr

Full-time

Medical, Retirement, PTO

Re-posted 12 days ago


Leidos rating

8.3

Company rating: 8.3 out of 10

Based on 152 frontline employees who took The Breakroom Quiz

80th of 500 rated business services


Job description

Description

Job Description:

Are you passionate about delivering high-quality software that directly supports our nation’s security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers, software developers, product managers, and mission experts to build innovative geospatial intelligence capabilities that enable critical national security missions.

If you’re energized by solving complex technical challenges, championing quality throughout the software development lifecycle, and driving continuous improvement in an Agile environment, we’d like to hear from you.

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure, and high-performing software solutions. You’ll work as an integral member of a cross-functional Agile Scrum Team, developing and executing comprehensive test strategies that support rapid, iterative delivery while maintaining exceptional quality standards.

This role is ideal for someone who thrives in a collaborative DevSecOps environment and enjoys automating testing, and improving processes.

Position may be performed in the following locations below.  Please note Gaithersburg, MD is the program’s primary work location.

  • 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 across multiple Agile sprints.
  • Design, develop, and maintain automated and manual test cases for new and existing capabilities.
  • Collaborate daily with software engineers, product managers, system engineers, and Scrum Masters to define acceptance criteria and ensure quality is built into every release.
  • Perform functional, integration, regression, system, and end-to-end testing.
  • Validate application performance, reliability, security, and usability.
  • Identify, document, prioritize, and track software defects through resolution.
  • Support Continuous Integration/Continuous Delivery (CI/CD) pipelines by integrating automated testing into deployment workflows.
  • Analyze test results, communicate risks, and provide recommendations that improve software quality.
  • Contribute to continuous process improvement initiatives that enhance Agile team effectiveness.

Basic Qualifications:

  • US citizenship is required per contract.
  • Bachelor's degree in Computer Science, Engineering, Information Technology or related field and 4-8 years of prior relevant experience or Master’s with 2-6 years of prior relevant experience.
  • 6+ years of software testing or quality engineering experience.
  • Experience supporting Agile software development programs.
  • Demonstrated experience creating and executing manual and automated test plans.
  • Experience with automated testing tools such as Cypress, Playwright, or equivalent.
  • Experience with API testing using tools such as Postman or REST Assured.
  • Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.
  • Experience with defect management tools such as Jira.
  • Ability to communicate results and issues to technical and non-technical customer stakeholders.

Preferred Qualifications:

  • Experience supporting DoD or Intelligence Community programs.
  • Familiarity with scripting languages including JavaScript, and Python.
  • Knowledge of containerized applications using Docker and Kubernetes.
  • Experience with performance testing tools such as JMeter or LoadRunner.
  • Familiarity with cloud technologies including AWS, Azure, or OpenShift
  • Knowledge of DevSecOps pipelines and automated quality assurance practices.
  • Experience working with modern software delivery environments.
  • Experience with geospatial applications or GEOINT data.
  • Certifications such as ISTQB, CASTP, CAST, CSTE, Security+, or similar.

#Chinook

#NSBA

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:July 21, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:Pay Range $87,100.00 - $157,450.00

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.

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.


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About Leidos

Sourced by ZipRecruiter

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

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