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Job Information

MasterCard Software Engineer In Test in O'Fallon, Missouri

Our Purpose

We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion ( for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation and delivers better business results.

Job Title

Software Engineer In Test


We are seeking a Sr. Software Development Engineer in Test to design and define an effective test automation strategy for your SCRUM team to validate application functionality and performance based on refined acceptance criteria, using methodologies, tools, strategies, and standards based on best practices in Agile software testing and continuous integration and deployment.


• Play a pivotal role on the Agile team in the continuous validation of web applications, system to system interfaces and complete software solutions

• Design and develop test automation scenarios to validate system to system interfaces and complete software solutions (for API and UI tests)

• Interact with business and development stakeholders to define test plans and schedules

• Translate complex system requirements and specs into test requirements and testing methods

• Identify and implement complex automation efforts, including refactoring of automation code where needed

• Work closely with software engineers to build quality in, ensuring proper test and requirement coverage, configuration quality, monitoring, early performance testing

• Generate test data for defined test cases, recognize test environment preparation needs, and execute existing test plans and report results

• Participate in project-level reviews, walkthroughs and inspections, and conduct test reviews, including test plans, requirements, cases and automation coverage

• Document performance test strategies and test plans, and execute performance validation

• Collect quality metric data and communicate test status/risks to stakeholders

• Work closely with developers to identify code defects or regressions

• Closely adhere to quality standards and assist team members in validating application functionality through the implementation of test strategies, frameworks, tools, reports, etc.

• Assist in planning and documenting test strategies and acceptance criteria based on customer needs

• Participate in requirements review, story elaborations and testing activities

• Design, code, and construct automation tests; escalate issues during testing

• Provide automation tests for operations teams to use in Ci/Cd automated quality gates

• Perform Exploratory testing as required

• Raise process improvement opportunities

• Act as first-review for project-level reviews, walkthroughs and inspections

• Provide technical support and mentoring to junior team members

• Perform demos of new product functionality to stakeholders

All About You

• Experienced in advanced code development, code review, and construction and use of automation frameworks

• Experienced in building automation frameworks as well as acceptance and integration test automation scripts

• Successfully developed high quality test strategies and text execution

• Analyzed application logs and utilized basic debugging techniques

• Successfully validated one or more applications via automation, for new feature functionality and regression testing

• Experienced in Agile testing methodologies and tools, unit and integration testing, and data virtualization tools

• Basic understanding of validation techniques and Continuous Testing

• Familiarity with UI automation frameworks, tools, and techniques to validate user interfaces (mobile, portal, web, etc.)

• Able to mentor peers and guide less experienced Team members

Technical Skills

• Design Architecture (Foundational)

• Technology R&D (Foundational)

• Project Management (Intermediate)

• Requirements Assessment (Intermediate)

• Software Development (Advanced)

• Agile Development (Intermediate)

• Automation and DevOps (Intermediate)

Professional Skills (Intermediate)

• Business Acumen

• Commercial Focus

• Future Focus

• Global Perspective

• Innovation and thought leadership

• People Leadership

• Personal Influence

Due to COVID-19, most of our employees are working from home. We’ve implemented a virtual hiring process and continue to interview candidates by phone or video and are onboarding new hires remotely. We value the safety of each member of our community because we know we’re all in this together.

Mastercard is an inclusive Equal Employment Opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.​

If you require accommodations or assistance to complete the online application process, please contact and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.

Corporate Security Responsibility

Every person working for, or on behalf of, Mastercard is responsible for information security. All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and therefore, it is expected that the successful candidate for this position must:

• Abide by Mastercard’s security policies and practices;

• Ensure the confidentiality and integrity of the information being accessed;

• Report any suspected information security violation or breach, and

• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

Requisition ID: R-131977