Senior Software Engineer

Mastercard • O'fallon, MO

5d

About The Position

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Senior Software Engineer Who is Mastercard? 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 respect 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. About the Team Commercial & New Payment Flows (CNPF) is Mastercard’s global organization dedicated to modernizing commercial payments and enabling businesses of all sizes to move money smarter, faster, and more securely. Commercial Platform Engineering (CPE) serves as the engineering backbone of CNPF, delivering the shared platform capabilities that power all Commercial products and experiences. CPE focuses on platform modernization, operational excellence, cross‑program delivery, as well as driving quality, performance, resiliency, and scalability. Within CPE, our team operates as a specialized engineering group responsible for foundational services used across Commercial programs. We are a lean, high‑impact engineering team that designs, builds, and maintains core shared services that other product teams rely on every day. Our work underpins critical capabilities across the organization, ensuring reliability and seamless integration. Role As a Senior Software engineer, you will be responsible for development, deployment support, owning the delivery of user stories, mentoring junior team members, and performing code reviews. This is a vital role responsible for planning, developing, and coordinating all activities related to design, development, and implementation. We are seeking a highly motivated, detail-oriented, and proactive engineer who has the ability to operate under pressure in an independent, autonomous environment.

Requirements

• Bachelor's degree in information systems, Information Technology, Computer Science or Engineering is preferred.
• Strong hands-on experience in backend development with applicable JAVA technologies (Core JAVA, Spring Integration, Spring Boot, Hibernate, REST/SOAP web services).
• Proven experience working with Oracle/SQL Databases.
• Experience and understanding of messaging solutions, such as Apache Kafka, Axon, etc.,
• Strong knowledge of automated build, deployment and continuous integration systems.
• Experience with CI/CD tools like Jenkins, Bitbucket, Artifactory, Atlassian suite, etc.,
• Strong communication skills (verbal and written), strong relationships, collaborative skills, and organizational skills.
• Proven abilities to work and communicate cross-functionally with key stakeholders, such as Technical Leads, Solution Architects, Product Managers, Release Managers and Application Services and Testing Teams as applicable to ensure quality delivery.
• Experience in Test-Driven Development (TDD) and Behavior-Driven Development (BDD).
• Experience in solution design for simplicity, scalability and future agility.
• Experience in technical design activities to ensure alignment with Non-Functional Requirements, Solution Architecture and System Functional Design specifications.
• Experience with all aspects of Scrum Agile for software development activities (e.g. daily standup, backlog grooming, sprint planning).
• Ability to understand user stories and requirements, contribute to proposed solution designs, and translate these into coded features or solutions that are simple, functional, scalable, and maintainable.

Nice To Haves

• Experience working in the Financial Services Sector is preferred.

Responsibilities

• Design, develop, test, implement, and maintain software applications that align with Mastercard engineering standards and best practices.
• Deliver secure, reliable, and scalable software solutions within defined timelines and budgets.
• Research and evaluate alternative technical approaches to meet current and future business needs.
• Conduct feasibility studies, system flowcharting, and logic design to support solution development.
• Collaborate with team members and stakeholders to meet project goals, identify issues early, and recommend practical solutions.

Benefits

• Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more.
• Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level