1

Senior Software Engineer In Test Jobs in Saint Louis, MO

Java - SDET Location: St Louis, MO Duration: 3 yrs SDET ROLE * Let me be very clear here - these are NOT traditional QA roles. I.e. Selenium-only or QTP/UFT-only guys who are QA Engineers. Instead, I ...

Title: Java - SDET Location: St Louis, MO Duration: 3 yrs SDET ROLE * Let me be very clear here - these are NOT traditional QA roles. I.e. Selenium-only or QTP/UFT-only guys who are QA Engineers.

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... test strategies, automation plans, integration specifications, and operational readiness ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Develop robust test automation using Java, Spring, JUnit, Rest Assured, JBehave, Cucumber, or ...

Senior Software Engineer

O Fallon, MO

$114K - $151K/yr

Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology ... optimize test execution, data handling, and performance validation Collaborate in Agile ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology ... test strategies, and validation models • Ensure secure coding practices are embedded in ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology ... in test automation, code coverage, and system reliability Analyze and optimize system performance ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology ... in test automation, code coverage, and system reliability • Analyze and optimize system ...

Senior Software Engineer

O Fallon, MO

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Design, develop, test, deploy, and support scalable software solutions that power Mastercard ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Role As a Senior Software Engineer, you will: • Design, develop, test, deploy, and support ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Operating in more than 210 countries and territories, we are building a sustainable world that ... Promote test automation and quality gates to ensure consistent and reliable delivery. Ensure ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... in an independent, autonomous environment. Responsibilities Software Engineering & Development - Design, build, test, deploy, and maintain software components, automation frameworks, and validation ...

Senior Software Engineer

Saint Louis, MO · On-site +1

$119K - $157K/yr

In this role, you should be able to work independently with little supervision. You should have ... Design, implement, review, test, debug, and document high-quality software * Discuss, review and ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... in an independent, autonomous environment. Responsibilities Software Engineering & Development - Design, build, test, deploy, and maintain software components, automation frameworks, and validation ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... A Senior Software Engineer is an experienced individual contributor who designs, develops, tests ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... A Senior Software Engineer is an experienced individual contributor who designs, develops, tests ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... A Senior Software Engineer is an experienced individual contributor who designs, develops, tests ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... A Senior Software Engineer is an experienced individual contributor who designs, develops, tests ...

next page

Showing results 1-20

Senior Software Engineer In Test information

See Saint Louis, MO salary details

$21.9K

$122.1K

$159K

How much do senior software engineer in test jobs pay per year?

As of Aug 6, 2026, the average yearly pay for senior software engineer in test in Saint Louis, MO is $122,074.00, according to ZipRecruiter salary data. Most workers in this role earn between $107,400.00 and $139,500.00 per year, depending on experience, location, and employer.

What is the difference between Senior Software Engineer In Test vs Software Development Engineer in Test?

AspectSenior Software Engineer In TestSoftware Development Engineer in Test
CredentialsBachelor's in CS or related field, experience in testing and automationBachelor's in CS or related field, strong coding skills, experience in testing
Work EnvironmentDesigning test strategies, automation frameworks, collaborating with development teamsDeveloping test tools, writing automated tests, integrating testing into CI/CD pipelines
Industry UsageCommon in tech companies, especially in QA and testing teamsWidely used in software development companies focusing on automation

The main difference is that Senior Software Engineer In Test often focuses on testing strategy and automation leadership, while Software Development Engineer in Test emphasizes developing testing tools and automation code. Both roles require strong coding skills and testing experience, but their focus areas differ slightly within the testing lifecycle.

What are some typical challenges a senior software engineer in test faces when designing automated testing frameworks?

Senior Software Engineers in Test often encounter challenges such as integrating automated tests with complex, evolving codebases and ensuring tests remain reliable as features change. Balancing thorough test coverage with execution speed, especially in continuous integration environments, is another common concern. Additionally, collaborating with both development and QA teams to align on testing strategies and maintaining documentation for test frameworks are key responsibilities that require strong communication and adaptability.

What is a senior software engineer in test?

Senior Software Engineers in Test are experienced professionals who design, develop, and implement automated testing frameworks and tools to ensure the quality and reliability of software products. They work closely with development and QA teams to identify testing needs, create robust test plans, and write automated scripts that validate software functionality. In addition to hands-on coding, they often mentor junior engineers, drive process improvements, and contribute to the overall testing strategy of the organization.

What are the key skills and qualifications needed to thrive as a senior software engineer in test, and why are they important?

To thrive as a Senior Software Engineer in Test, you need a deep understanding of software development, test automation frameworks, and a background in computer science or a related field. Mastery of tools like Selenium, Jenkins, JUnit, and experience with CI/CD systems, as well as relevant certifications such as ISTQB, are typically required. Strong analytical thinking, problem-solving abilities, and effective communication skills set top candidates apart in this role. These skills are crucial for ensuring robust, scalable, and reliable software delivery in complex technical environments.
What are the most commonly searched types of Software Engineer In Test jobs in Saint Louis, MO? The most popular types of Software Engineer In Test jobs in Saint Louis, MO are:
What are popular job titles related to Senior Software Engineer In Test jobs in Saint Louis, MO? For Senior Software Engineer In Test jobs in Saint Louis, MO, the most frequently searched job titles are:
What job categories do people searching Senior Software Engineer In Test jobs in Saint Louis, MO look for? The top searched job categories for Senior Software Engineer In Test jobs in Saint Louis, MO are:
What cities near Saint Louis, MO are hiring for Senior Software Engineer In Test jobs? Cities near Saint Louis, MO with the most Senior Software Engineer In Test job openings:
Infographic showing various Senior Software Engineer In Test job openings in Saint Louis, MO as of August 2026, with employment types broken down into 87% Full Time, 9% Part Time, and 4% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $122,074 per year, or $58.7 per hour.

Senior Software Engineer in Test (SDET) / Senior Automation Engineer - Only W2

Saransh Inc

O Fallon, MO • On-site

$103K - $134K/yr

Contractor

Posted 24 days ago


Job description

Role: Software Engineer in Test / Senior Automation Engineer
Location: O'Fallon, MO (Hybrid - 2 days a week onsite)
Job Type: W2 Contract
 
NOTE: No C2C (or) Third-party candidates
 
Experience level: Senior
 
Requirements: 
• Overall 9 years of career experience in Automation Testing with Java
• Strong Java coding experience 
• Use of JUnit/Jbehave or Cucumber frameworks
• Experience in regression testing as releases move through the different environments.
• Experience in Testing Web services, Web UI, APIs
• Ability to create good acceptance and integration test automation scripts and integrate with Continuous integration (Jenkins) and code coverage tools (Sonar, Clover)
• Passionate about code quality and coding best practices. 
• Good knowledge of Linux / Unix 
• Sound knowledge of Java, Spring, JUnit, Eclipse IDE, Rest Assured, Jbehave/Cucumber frameworks, Databases, APIs (REST/SOAP), Continuous Delivery concepts and tools such as Jenkins/Bamboo, vulnerability tools such as Sonar, Checkmarx/Fortify, etc.
• Strong knowledge of traditional testing methodologies and how it applies exploratory testing in an Agile environment
 
Description:
• This position will be responsible for delivering of Test Engineering services (Regression Testing, Code quality, Testing Services, Testing and Environment automation, Development Collaboration, Continuous Integration) .
• Good understanding of BDD/TDD practices, code review and analysis techniques, and open source agile testing frameworks. 
• Author automated test suites with code, front end GUI automation and API testing
• Regression / integration testing as release moves through different environments before Production deployment
• Highlight and identify any testing gaps found through regression testing and working with Test / Development teams to resolve them
• Perform ad hoc / exploratory testing methodically to ensure system is working as expected by end user
• Comprehend user stories to understand task items per story in the context of all levels of testing (unit, functional, integration, and regression)
• Track regression testing progress and defects via Rally
• Participate in the process to continually enhance best practices for quality assurance
• Interacts with technology staff including Test Engineers, Developers, DevOps Engineers, Product management, and Program management to identify scope of project/s and deliver services. 
• Drive adoption of development services (Quality Engineering, Performance Engineering, Continuous Integration, Continuous Delivery, and Collaboration) among various delivery teams.
• Work in an agile environment, attend daily stand up calls and give daily status reports and call out any issues or blockers that may delay release delivery