Mastercard Jobs

Job Information

MasterCard Software Development Engineer II 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 Development Engineer II


• Responsible for the analysis, design, development and delivery of software solutions

• Defines requirements for new applications and customizations, adhering to standards, processes and best practices


• Own software delivery tasks (code development, test, deployment) at an application/software component level

• Participate in team prioritization discussions with Product/Business stakeholders

• Able to troubleshoot and refactor existing code

• Adopt new languages and architecture patterns needed for the work

• Influence the decisions made by the team

• Assist peers and less experienced members

• Influence the decisions made by the team

• Demonstrate active learning and sharing of software practices via Guild/Engineering community initiatives

• Assist in technical documentation

• Partner with testers to functional test

• Participate in code and design reviews

• Actively participate in squad ceremonies

• Work collaboratively and effectively in a fast paced environment

All About You

• Strong understanding of Software Engineering Concepts and agile methodology

• Has the ability to write secure code in C, C++; familiar with secure coding standards (e.g., OWASP, CWE, SEI CERT) and vulnerability management

• Proficient in an object oriented language (C++ preferred)

• Proficient in a scripting language (shell script preferred)

• Experience creating unit tests and knowledge of unit testing framework (Junit or Google Test)

• Experience developing on Linux operating systems

• Experience developing in a team environment with a source control tool (Git/Bitbucket preferred)

• Willingness and ability to quickly learn and take on new challenging opportunities

• Has the ability to develop and document test strategy following Mastercard testing standards

• Actively seeks and participates in activities that stretch one's existing skillset

• Strong critical thinking and analytical skills

• Strong verbal and written communication skills

• Bachelor’s Degree in Computer Science or related field

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-145888