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Senior Software Development Engineer In Test Jobs in Missouri

InterSources Inc

QA Test Engineer

Chesterfield, MO · On-site

$40.75 - $55.75/hr

Responsibilities : • 3+ years in QA automation or SDET-type work (adjust by level); 1+ year exposure to AI/LLM or ML-driven features is a plus. • Strong test automation in Python and/or Java ...

Techvilla Solutions

QA Automation Engineer

Winona, MO · On-site

Required Qualifications * 5+ years of experience in SDET, QA Automation Engineering, Software Quality Engineering, or a related field. * Strong hands-on programming experience with Python. * Strong ...

MasterCard

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

You'll play a key role in advancing engineering excellence through secure development practices ... Role Design, build, test, deploy, and maintain scalable, cloud-native applications and ...

Stereotaxis, Inc.

Senior Software Engineer

Saint Louis, MO · On-site

$116K - $153K/yr

This role will design, develop, document, and test software written in the C++ language using ... Experience in the design and development of medical devices preferred * Working knowledge of OpenGL ...

Stereotaxis

Senior Software Engineer

Saint Louis, MO · On-site

$119K - $157K/yr

This role will design, develop, document, and test software written in the C++ language using ... development of medical devices preferred • Working knowledge of OpenGL and 3D software ...

The Timberline Group

Senior Software Engineer

Saint Louis, MO · On-site

$116K - $153K/yr

Design, implement, review, test, debug, and document high-quality software * Discuss, review and ... Efficiently identify, prioritize and complete tasks in agile scrum software development life cycle

Mastercard, Inc.

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

You'll play a key role in advancing engineering excellence through secure development practices ... Role • Design, build, test, deploy, and maintain scalable, cloud-native applications and ...

The Timberline Group

Senior Software Engineer

Saint Louis, MO · On-site +1

$119K - $157K/yr

Design, implement, review, test, debug, and document high-quality software * Discuss, review and ... Efficiently identify, prioritize and complete tasks in agile scrum software development life cycle

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Senior Software Development Engineer In Test information

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$21.1K

$117.8K

$153.4K

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

As of Sep 10, 2026, the average yearly pay for senior software development engineer in test in Missouri is $117,776.00, according to ZipRecruiter salary data. Most workers in this role earn between $103,600.00 and $134,600.00 per year, depending on experience, location, and employer.

What does a senior software development engineer in test do?

A Senior Software Development Engineer in Test (SDET) is responsible for designing, developing, and maintaining automated test frameworks and tools to ensure the quality and reliability of software products. They work closely with development and QA teams to identify test requirements, create robust test cases, and integrate automated tests into the CI/CD pipeline. In addition to coding and scripting, Senior SDETs mentor junior team members, analyze test results, and help troubleshoot complex issues to continuously improve software quality. Their expertise bridges the gap between development and testing, ensuring both speed and quality in software releases.

How does a senior software development engineer in test typically collaborate with development and product teams to ensure software quality?

As a Senior Software Development Engineer In Test (SDET), you will work closely with both development and product teams throughout the software development lifecycle. This includes participating in design and requirements discussions to identify potential test cases early, contributing to test automation strategies, and providing feedback on testability and quality risks. SDETs often pair with developers to review code, co-create test plans, and triage bugs together, ensuring that testing is fully integrated into the CI/CD pipeline. Effective communication and cross-team collaboration are essential for proactively identifying issues and maintaining high software quality standards.

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

To thrive as a Senior Software Development Engineer In Test, you need advanced programming skills, deep knowledge of software testing methodologies, and a bachelor's degree in computer science or a related field. Expertise with automation frameworks (such as Selenium, Cypress, or Appium), CI/CD tools, and scripting languages is typically required, along with relevant certifications like ISTQB. Strong analytical thinking, problem-solving, and effective communication are crucial soft skills for collaborating with cross-functional teams and driving quality initiatives. These capabilities ensure rigorous test coverage, faster release cycles, and high-quality software products.

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

AspectSenior Software Development Engineer In TestSoftware Development Engineer In Test
ExperienceTypically 5+ years in testing and developmentEntry to mid-level, 1-3 years experience
ResponsibilitiesDesigns complex test frameworks, mentors juniors, leads testing initiativesDevelops test cases, automates tests, executes testing tasks
Skills & CertificationsAdvanced coding, automation, testing tools, leadership skillsProgramming, automation, testing tools
Work EnvironmentCollaborates with cross-functional teams, often in Agile settingsWorks closely with developers, focuses on automation and manual testing

In summary, a Senior Software Development Engineer In Test has more experience, leadership responsibilities, and strategic testing roles compared to a Software Development Engineer In Test, who primarily focuses on developing and executing tests.

What are the most commonly searched types of Software Development Engineer In Test jobs in Missouri?

The most popular types of Software Development Engineer In Test jobs in Missouri are:

What are popular job titles related to Senior Software Development Engineer In Test jobs in Missouri?

For Senior Software Development Engineer In Test jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Senior Software Development Engineer In Test jobs in Missouri look for?

The top searched job categories for Senior Software Development Engineer In Test jobs in Missouri are:

What cities in Missouri are hiring for Senior Software Development Engineer In Test jobs?

Cities in Missouri with the most Senior Software Development Engineer In Test job openings:

Senior Software Development Engineer In Test jobs near you
Infographic showing various Senior Software Development Engineer In Test job openings in Missouri as of August 2026, with employment types broken down into 1% As Needed, 81% Full Time, 15% Part Time, and 3% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $117,776 per year, or $56.6 per hour.

Software Development Engineer - Testing

California, MO • On-site

Jobtailor
See more jobs at Jobtailorexternal

Other

Posted 18 days ago

Key responsibilities

  • Deliver software testing tasks supporting business capabilities and overall solution needs

  • Convert test designs into manual or automated test cases and deliver them on schedule

  • Own hands‑on design, implementation, and support of project components

Job description


  • Deliver software testing tasks supporting business capabilities and overall solution needs

  • Review complex test plans and designs to validate new and existing software functionality

  • Convert test designs into manual or automated test cases and deliver them on schedule

  • Identify coverage gaps and missing test scenarios

  • Write stable, efficient, and maintainable automated test code

  • Mentor and support junior team members creating manual and automated tests

  • Promote highly automated testing and support release of quality software through automation and monitoring

  • Participate in code reviews and implement coding best practices and organizational standards

  • Improve automated test code for operational excellence and maintainability

  • Work with customers and internal partners to understand business impacts and technical opportunities/problems

  • Develop testing solutions that meet customer needs and team goals

  • Own hands‑on design, implementation, and support of project components

  • Collaborate with senior Software Development Engineers in Test and QA Architects on technical vision and standards

  • Analyze usability/performance tradeoffs and make decisions for team success

  • Solve complex problems by translating them into feasible team‑implementable solutions

  • Create test scenarios based on business and customer needs

  • Participate in design, scoping, prioritization discussions, and Agile ceremonies


Requirements

  • 3 years professional experience in the design, delivery, and support of complex projects across web platforms and mobile applications

  • Direct hands‑on experience with the specific technologies used in the team’s systems/solutions

  • Proven ability to deliver engineering artifacts including designs, algorithms, and implementations

  • Bachelor's degree in a related area or equivalent combination of education and experience

  • Experience applying QA test automation with an object-oriented programming language; Java preferred

  • Practical application of API testing tools such as SOAP, RESTful, and Rest Assured

  • Experience applying SDLC and testing methodologies

  • Experience with test automation tools such as Selenium and RestAssured

  • Working knowledge of fully automated QA, including TDD, BDD, performance, security, integration/compatibility, regression, and functional testing

  • Working knowledge of API-Driven Development and systems design

  • Experience with enterprise‑level scale and complexity

  • Willingness to travel as needed for divisional/team meetings and other in-person meetings

  • Must have authorization to work indefinitely in the United States

  • Must not require immigration support now or in the future


Core Competencies

Demonstrates expertise in software testing, including manual and automated test case development, with a strong focus on quality assurance and operational excellence. Proficient in API testing and familiar with Agile methodologies, ensuring alignment with business needs and technical standards.


Highest-signal resume keywords

  • Test Automation with Java

  • API Testing with SOAP and RESTful

  • Experience with Selenium and RestAssured

  • Agile Methodologies

  • Bachelor's Degree in Related Area


ATS Optimization Keywords
Hard Skills

  • Software Testing

  • Test Case Development

  • Automated Test Code

  • API Testing

  • SDLC

  • TDD

  • BDD

  • Performance Testing

  • Regression Testing

  • Functional Testing


Soft Skills

  • Mentoring

  • Collaboration

  • Problem Solving

  • Communication


Industry Keywords

  • Web Platforms

  • Mobile Applications

  • Enterprise‑Level Scale

  • Quality Assurance


Tools & Technologies

  • Selenium

  • RestAssured

  • API Testing Tools

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