Senior Software Engineer

Mastercard • O'fallon, MO

5d • $115,000 - $184,000 • Onsite

About The Position

At Mastercard Commercial Solutions, we empower businesses to succeed through innovative, trusted payment solutions that deliver seamless, digital-first experiences around the world. We are building a global business-to-business (B2B) technology platform that helps businesses of all sizes streamline how they manage payments when buying or selling products and services. The Mastercard Commercial Solutions team is looking for a Senior Software Engineer to advance our customer experience strategy through innovation and problem-solving. The ideal candidate is passionate about the customer journey and is highly motivated, intellectually curious, and analytical.

Requirements

• Experience developing secure full-stack applications using backend and front-end technologies such as Java, JavaScript, Angular, and SQL.
• Strong knowledge of Spring, Spring Data JPA, REST APIs, Kafka, and related frameworks.
• Experience designing, implementing, and maintaining unit, service, integration, functional, and regression tests using tools such as JUnit, Mockito, and Jasmine.
• Knowledge of application and design patterns used to implement APIs, event-driven services, batch services, and user-interface applications.
• Strong understanding of data structures and their application in building efficient, reliable, and maintainable software.
• Experience applying secure coding standards and vulnerability-management practices throughout the software development lifecycle.
• Experience implementing API standards and cataloging practices to support service adoption, reuse, and commercialization.
• Experience using tools such as Sonar, CxOne, Checkmarx, Black Duck, and Zally to evaluate code quality, security vulnerabilities, and anti-patterns.
• Experience orchestrating release workflows and implementing standardized continuous integration and continuous delivery pipelines using tools such as Jenkins and XL Release.
• Experience evaluating and improving application performance, scalability, and reliability using appropriate testing and tuning techniques.
• Strong problem-solving and creative troubleshooting skills, with the ability to diagnose and resolve issues across applications and integrated systems.
• Strong organizational skills and the ability to manage multiple priorities within business timelines.
• Self-motivated and proactive, with a commitment to continuous improvement and delivering results.
• Ability to thrive in a fast-paced, rapidly changing, and customer-focused environment.
• Ability to promote full-stack engineering practices and end-to-end service ownership across teams.
• Strong written and verbal communication skills.
• Bachelor’s degree in Computer Science, Software Engineering, or a related field.
• Eight or more years of relevant software engineering or information technology experience.

Nice To Haves

• Experience with monitoring and observability tools such as Splunk or Dynatrace.

Responsibilities

• Own software delivery activities at the application or software-component level, including design, development, testing, deployment, support, documentation, and configuration.
• Develop full-stack solutions, including front-end applications, REST APIs, and backend services.
• Translate business and technical requirements into scalable, secure, and maintainable software designs, defining appropriate components and system interactions.
• Participate in Scrum ceremonies and contribute to continuous improvement using Agile methodologies.
• Drive code, design, and process trade-off discussions within the team.
• Promote the adoption of engineering principles, technology standards, and best practices.
• Review code, testing, and automation produced by team members to ensure quality, security, standards compliance, and maintainability.
• Develop a strong understanding of end-to-end technical architecture and system dependencies.
• Evaluate application architecture and design decisions with consideration for scalability, performance, reliability, and long-term maintainability.
• Mentor and guide new and less-experienced team members.
• Develop and maintain unit, integration, functional, and regression tests.
• Analyze and optimize application performance through testing, measurement, troubleshooting, and tuning.
• Design and maintain applications for operational readiness by incorporating reliability, observability, monitoring, and effective production-support practices.
• Troubleshoot production incidents and implement corrective and preventive actions.
• Share and seek knowledge within the Guild and program to promote the reuse of patterns, libraries, and engineering practices.

Benefits

• insurance (including medical, prescription drug, dental, vision, disability, life insurance)
• flexible spending account and health savings account
• 16 weeks of new parent leave
• up to 20 days of bereavement leave
• 80 hours of Paid Sick and Safe Time
• 25 days of vacation time
• 5 personal days
• 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

What This Job Offers

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