Senior Software Engineer

Our Purpose

Mastercard powers economies and empowers people in 200 countries and territories worldwide. Together with our customers were helping build asustainableeconomy where everyone can prosper. We support a wide range of digital payments choices making transactionssecure 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

Overview
The Decision Management Program (DMP) delivers industryleading intelligence that enables faster smarter decisioning at global scale across the payment journey and beyond. Through a suite of products DMP structures and applies complex business logic to help teams manage risk adapt quickly to changing regulatory geopolitical or market conditions and drive profitable customer engagements. Built for resiliency availability and future growth DMP empowers Mastercards market-facing programs with agile intelligent decision management capabilities worldwide.

A Senior Software Engineer is an experienced individual contributor who designs develops tests deploys and maintains complex backend software applications and services with a strong focus on Java-based development. This role applies deep technical expertise to solve nontrivial engineering problems influence design decisions and improve engineering practices while collaborating closely with product operations and other stakeholders.

Senior Software Engineers operate with a high degree of autonomy contribute across the full software development lifecycle and raise the technical bar through backend development code quality automated testing system design secure engineering practices and knowledge sharing.

Role Responsibilities
Own software delivery activities at the application or software-component level including backend development testing deployment release configuration and documentation.
Design and develop scalable secure reliable and maintainable Java-based applications APIs services and backend components.
Translate business and technical requirements into scalable secure reliable and maintainable software designs.
Develop high-quality Java software using appropriate algorithms data structures coding standards and engineering best practices.
Design develop and maintain automated unit functional integration and regression tests to validate software functionality service interactions and code changes.
Incorporate test automation and regression testing into the software development lifecycle to support code quality and reliable releases.
Troubleshoot diagnose and refactor existing code to improve quality maintainability performance and reliability.
Apply secure coding practices throughout the software development lifecycle to identify and reduce application vulnerabilities.
Adopt new programming languages frameworks and architecture patterns based on business and technical needs.
Participate in the teams agile processes technical decisions backlog refinement and prioritization activities.
Deliver prioritized backlog work in partnership with the full scrum team seeking guidance when appropriate.
Automate software build testing deployment operational and runtime processes.
Lead code design and process trade-off discussions within the team when required.
Drive the integration of backend services and APIs with a focus on the customer journey and overall experience.
Perform product demonstrations and participate in acceptance discussions with Product Owners.
Improve operational readiness by incorporating reliability observability monitoring and measurable engineering practices into software solutions.
Analyze and optimize applications and services for performance and scalability through testing tuning and ongoing evaluation.
Develop a comprehensive understanding of end-to-end technical architecture system interactions and dependencies.
Drive the adoption of technology standards and approved frameworks and review the development testing design and automation work of team members.
Mentor and guide new and less-experienced team members through technical support code reviews and knowledge sharing.
Identify opportunities to improve engineering processes reduce waste and increase team productivity.
Share and seek knowledge within relevant Guilds and Programs to promote the reuse of patterns libraries tools and practices.

All About You
Strong experience developing backend applications and services using Java with demonstrated proficiency building production-quality software.
Strong understanding of Java development backend software design APIs service-oriented architectures algorithms and data structures.
Experience applying secure coding standards and developing scalable maintainable software.
Experience developing and maintaining automated unit functional integration and regression testing as part of software development.
Experience incorporating test automation into CI/CD and software delivery practices to improve quality and release reliability.
Strong code-review skills including the ability to identify quality security maintainability and standards-compliance concerns.
Experience troubleshooting complex application and system issues.
Familiarity with performance engineering performance tuning automation observability and operational-readiness practices.
Solid experience with software development processes and one or more Application Lifecycle Management tools.
Success producing high-quality software designs technical deliverables and documentation.
Demonstrated experience applying AI technologies or capabilities within a software engineering context.
Proactive detail-oriented and able to operate independently in a fast-paced environment.
Passion for continuous learning and solving challenging technical problems.
Strong verbal and written communication relationship-building collaboration and organizational skills.
Strong commitment to the timely delivery of key objectives.
Sound decision-making skills and a continuous-improvement mindset.
Bachelors degree in Computer Science or a related technical field or equivalent practical experience.

Mastercard is a merit-based inclusive equal 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. We hire the most qualified candidate for the the US or Canada if you require accommodations or assistance to complete the online application process or during the recruitment 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

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

• Abide by Mastercards 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 Mastercards guidelines.

In line with Mastercards total compensation philosophy and assuming that the job will be performed in the US the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors including but not limited to location job-related knowledge skills and experience. 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. THIS POSTING RELECTS ONE OR MORE CURRENT VACANCIES ON OUR TEAM AND MASTERCARD INTENDS TO FILL THIS POSITION BY 01/18/2027. If the fill date has passed Mastercard intends to fill this position as soon as possible.

Pay Ranges

OFallon Missouri: $115000 - $184000 USD