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Join Mastercard’s Network & Digital Payments team as a Senior Software Engineer in O'Fallon, MO.
Build secure, scalable payment solutions using Java, Spring Boot, and cloud-native technologies.
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 EngineerOverview Mastercard’s Network & Digital Payments group creates valued experiences for consumers, and enables merchants and issuers to reach consumers in ways not possible in the pre-digital world. The global product engineering team is responsible for development of a suite of foundational payment solutions. This an opportunity to be a part of a highly motivated team focused on bringing security, convenience and control to digital payments. • Have you ever engineered a product to market on a global scale? • Are you motivated to be a part of driving a world beyond cash? • Are you agile with a desire to exhibit your skills at the cutting edge with a high standard for excellence?
As a Senior Engineer, You Will
- • Design, develop, and maintain robust and scalable backend services using Java, Spring Boot, and microservices architecture.
- • Deploy, manage, and optimize applications running on PCF, Kubernetes, and cloud-native environments.
- • Develop engaging and responsive user interfaces using modern front-end frameworks such as Angular or React.
- • Participate in Proof of Concepts (PoCs) and contribute to the evaluation and selection of vendor solutions, technologies, frameworks, and engineering methodologies.
- • Write clean, maintainable, well-documented, secure, and testable code following engineering standards and best practices.
- • Collaborate with product managers, designers, architects, and engineering teams to deliver high-quality software solutions.
- • Lead and participate in code reviews, promoting engineering excellence, maintainability, secure coding practices, and adherence to architectural standards while helping other engineers improve technical quality.
- • Troubleshoot and resolve complex technical issues across applications, services, and infrastructure while driving root-cause analysis and long-term corrective actions.
- • Ensure adequate test coverage through unit, functional, integration, and performance testing practices.
- • Contribute to and influence the architecture and design of software systems, ensuring scalability, resiliency, maintainability, and security.
- • Analyze application performance, conduct scalability assessments, identify bottlenecks, and implement performance tuning strategies to optimize system reliability and efficiency under varying workloads.
- • Apply secure coding standards and security best practices throughout the software development lifecycle, proactively identifying and remediating security vulnerabilities.
- • Design and implement observability, monitoring, logging, and operational readiness capabilities to support system reliability, supportability, and incident response.
- • Mentor junior engineers, share technical expertise, and provide guidance on engineering best practices.
- • Work in an Agile environment, participating in sprint planning, daily stand-ups, retrospectives, and continuous improvement activities.
All About You
- • Strong proficiency and experience in Full Stack Software Engineering.
- • Strong proficiency in Java and Spring Boot framework development.
- • Experience designing and developing scalable microservices-based solutions.
- • Experience with PCF, Kubernetes, Docker, or similar cloud-native platforms.
- • Solid understanding of front-end engineering principles and experience with Angular or React.
- • Proficiency in HTML, CSS, JavaScript, and JQuery.
- • Experience with relational databases such as Oracle or PostgreSQL and the ability to design efficient, optimized data access solutions.
- • Experience with RESTful API design and development.
- • Experience leveraging or developing solutions using Information Security concepts including X.509, public key cryptography, JWT, hashing, and digital signatures.
- • Experience with software testing frameworks and methodologies.
- • Strong understanding of data structures, algorithms, and computational complexity with the ability to apply them to scalable, high-performance software solutions.
- • Experience implementing secure coding practices, application security principles, and vulnerability prevention and remediation techniques.
- • Experience optimizing application performance, scalability, and reliability in distributed systems.
- • Strong analytical, troubleshooting, and problem-solving skills.
- • Ability to work independently and collaboratively within cross-functional teams.
Preferred Qualifications
- • Experience with additional cloud platforms such as AWS, Azure, or Google Cloud Platform.
- • Experience with DevOps practices and tools including Jenkins, Docker, Kubernetes, CI/CD pipelines, and automation frameworks.
- • Experience with observability tools, monitoring platforms, logging frameworks, and operational support practices.
- • Contributions to open-source software projects
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 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.
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 role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment 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.
Pay Ranges
In line with Mastercard’s 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.
O'Fallon, Missouri: $115,000 - $184,000 USD