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Senior Software Development Engineer In Test Jobs in Saint Peters, MO

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... in test automation, code coverage, and system reliability • Analyze and optimize system ... development workflows Corporate Security Responsibility All activities involving access to ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... in test automation, code coverage, and system reliability Analyze and optimize system performance ... development workflows Corporate Security Responsibility All activities involving access to ...

Senior Software Engineer- RPPS Platform

O Fallon, MO · Remote

$114K - $151K/yr

The position requires strong expertise in Java, Spring Boot, API development, and modern front-end ... Design, develop, test, deploy, and maintain scalable software applications that support 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 ... This role is for a Senior Software Engineer who will contribute to the design, development ...

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 development ...

Senior Software Engineer

O Fallon, MO

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... This role is for a Senior Software Engineer who will contribute to the design, development ...

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 Own software delivery tasks (code development, test, deployment, release, configuration and ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Role • Own software delivery tasks (code development, test, deployment, release, configuration ... In the US or Canada, if you require accommodations or assistance to complete the online application ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Role • Own software delivery tasks (code development, test, deployment, release, configuration ... In the US or Canada, if you require accommodations or assistance to complete the online application ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Role • Own software delivery tasks (code development, test, deployment, release, configuration ... In the US or Canada, if you require accommodations or assistance to complete the online application ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... practices are embedded in development and testing processes, proactively identifying ... Design, build, test, deploy, and maintain software components, automation frameworks, and ...

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 ... Software Development & Quality Independently design, build, test, deploy, and maintain highquality ...

Showing results 21-40

Senior Software Development Engineer In Test information

See Saint Peters, MO salary details

$21.5K

$120.1K

$156.3K

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

As of Aug 9, 2026, the average yearly pay for senior software development engineer in test in Saint Peters, MO is $120,057.00, according to ZipRecruiter salary data. Most workers in this role earn between $105,700.00 and $137,200.00 per year, depending on experience, location, and employer.

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 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 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 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.
What cities near Saint Peters, MO are hiring for Senior Software Development Engineer In Test jobs? Cities near Saint Peters, MO with the most Senior Software Development Engineer In Test job openings:

Senior Embedded Software Engineer

Leonardo DRS

Bridgeton, MO • On-site

$93K - $125K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 24 days ago


Leonardo DRS rating

8.1

Company rating: 8.1 out of 10

Based on 56 frontline employees who took The Breakroom Quiz

114th of 537 rated manufacturers


Job description

Job ID: 114786
The Leonardo DRS Land Systems business is a recognized leader in the design and integration of complex technologies into new and legacy systems and platforms for global military and commercial customers. We are a 5 year running Top Workplace in the Greater St. Louis area.
Job Summary
Leonardo DRS Land Systems is seeking a Full Time Senior Embedded Software Engineer. This position is based out of our Bridgeton, MO facility and will have the option to work an in person or hybrid schedule. The Senior Software Engineer provides technical and analytical work to develop, design, and/or support software solutions across multiple U.S. defense industries. Duties include participating in software design activities, developing code based on the architecture and technical design, creating and performing unit tests, enhancing the software development process, and playing an active role in test case planning for components and functions developed by the project team. The selected candidate will work with other engineering disciplines and use their software development expertise to create robust technical solutions across multiple technology areas.
Job Responsibilities
  • Complete a technical project independently and lead other engineers
  • Review customer specifications and requirements, and develop designs to best support them
  • Design and write embedded software code
  • Develop, document and support testing of products, systems or subsystems
  • Provide budget, cost and schedule input for design assignments
  • Document component and subsystem specifications
  • Specify and evaluate supplier subsystems and services
  • Apply fundamental knowledge of software engineering principles and core concepts (e.g., data structures, algorithms, computer architecture, operating systems, and databases) to create software solutions that meet project-based needs
  • Apply core computer science concepts in the development, testing, and documentation of software units
  • Participate as a member of the testing team to plan and review test cases within software solution components
  • Participate in code reviews with the systems engineers, software architects, and other technical staff
  • Collaborate with internal and external customers to develop systems to meet required business specifications
  • Communicate clearly (written and oral) with other company personnel and the customer as required
  • Support, communicate, reinforce and defend the mission, values and culture of the organization

Qualifications
  • Bachelor's Degree in Computer Science, Computer Engineering or related field
  • Proven Computer Science fundamentals in algorithm design, problem solving, and complexity analysis
  • 5+ years of industry experience in delivering high-quality, innovative applications and programming experience in one or more of the following: C, C++, C# and/or Java.
  • Practical experience working with embedded hardware
  • Experience in Object Oriented design and development
  • Experience following formal software development processes
  • Excellent verbal and written communication skills
  • Detail-oriented, organized, and able to work well in a team environment as well as independently with little day-to-day guidance
  • Demonstrates an ambition to learn
  • Experience with Linux/Unix and/or Windows
  • Experience with software version control systems (preferably GIT)
  • Willing to travel up to 10% as necessary

The salary range for this position is $93,121.00/year- $125,713.00/year for the state of Illinois. This range reflects the good faith estimate of pay the employer is willing to offer at the time of posting. Several factors can influence the pay scale, including but not limited to: Federal contract labor categories and contract wage rates, collective bargaining agreements, geographic location, business considerations, scope, and responsibilities of the position, local or other applicable market conditions, and internal equity. Other factors include the candidate's qualifications such as prior work experience, specific skills and competencies, education/training, and certifications. In addition to base pay, employees may be eligible for: annual performance-based bonuses, equity awards, and overtime pay (for non-exempt employees as applicable. Our benefits package includes comprehensive health insurance (medical, dental, vision), employer matching 401(k) retirement plan, paid time off including vacation, holidays, and sick leave (including ant state-mandated paid sick leave), parental leave benefits, tuition reimbursement, professional development support, and life and disability insurance coverage.
Taking care of our people is a top priority at Leonardo DRS. We are proud to offer competitive salaries and comprehensive benefits, including medical, dental, and vision coverage, a company contribution to a health savings account, telemedicine, life and disability insurance, legal insurance, and a 401(k) savings plan. We champion wellness programs that focus on physical, emotional, and financial well-being. We develop our talent by offering programs and activities to support career-growth, professional development, and skill enhancement. And we understand there is more to life than work, and the importance of offering flexible work schedules with our 9/80 program, competitive vacation, health/emergency leave, paid parental leave, and community service hours.
*Some employees are eligible for limited benefits only
Leonardo DRS, Inc. and its subsidiaries provide equal opportunities to all employees and applicants for employment and prohibit discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. #LSY
Our Vision. To be the leading mid-tier defense technology company in the U.S.
Our Values. The Leonardo DRS culture is defined by our Core Values and Principles:
- Integrity
- Agility
- Excellence
- Customer Focus
- Community & Respect
- Innovation
We strive to uphold them in all aspects of our business practices to inspire our employees and provide outstanding support for our customers.

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