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MasterCard Senior Software Development 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 at https://www.mastercard.us/en-us/vision/who-we-are/diversity-inclusion.html 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

Senior Software Development Engineer in Test

The Mastercard Digital Enablement Service (MDES) group is looking for a Senior SDET is someone who can bring unique perspectives and innovative ideas to all areas of testing, and is interested in continuing to improve our platform through the ever changing technology landscape. In this role, a senior SDET will work on multiple projects, which are critical to Mastercard’s role in the Digital Payment Space, leveraging core backend Java, SpringBoot, Pivotal Cloud Foundry and microservice architecture.

An ideal candidate is someone who works well with a cohesive team-oriented group of developers, who has a passion for testing software, who enjoys solving problems in a challenging environment, and who has the desire to take their career to the next level.


  • Coordinate and participate in the review and testing activities to ensure the quality and functionality of assigned Mastercard developed systems.

  • Assist project team in identifying and monitoring project testing risks and issues.

  • Perform automated and manual testing and validate results to confirm adherence and conformance to installation standards and methodologies.

  • Review user manuals for accuracy.

  • Ensure timely and accurate communication with Development Leads, Project Manager and Senior Management throughout the life-cycle of the project.

  • Ability to coordinate and interact across multiple departments.

  • Review project test and implementation schedules.

  • Monitor, document, and report the current status of projects.

  • Participate in review of project deliverables.

  • Actively participate in all aspects of the Agile process to include story pointing, attending elaboration sessions and creating acceptance criteria.

  • Manage defect resolution process and support outside testing environments such as Testing Services.

  • Follow and promote Quality Assurance and Quality Control processes in the department.

  • Actively look for opportunities to enhance standards and improve process efficiency.

  • Mentor and guide other team members during all phases of the SDLC.

  • Ensure adequate test coverage System Testing/Integration and Regression Testing

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 reasonable.accommodation@mastercard.com 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.

Requisition ID: R-112545