Senior Software Engineer– RPPS Platform

MastercardO'fallon, MO
$115,000 - $184,000Onsite

About The Position

The Transfer Solutions organization is seeking a Senior Software Engineer to join the RPPS (Remote Payment and Presentment System) platform team. This team develops and supports critical software solutions that enable payment processing capabilities across Mastercard's ecosystem. This role is ideal for an experienced full-stack engineer who enjoys building modern applications, designing scalable APIs, solving complex technical problems, and contributing to high-performing Agile engineering teams. The successful candidate will participate across the entire software development lifecycle, from solution design and architecture through development, testing, deployment, optimization, and production support. The position requires strong expertise in Java, Spring Boot, API development, and modern front-end technologies, coupled with a passion for engineering excellence, technical leadership, and continuous improvement. Based on the intake discussion, the role supports the RPPS platform and currently utilizes Java, Spring Boot, Angular, APIs, and automation-focused development work.

Requirements

  • Strong experience developing enterprise applications using Java and Spring Boot.
  • Experience building and consuming REST APIs in distributed application environments.
  • Experience with modern front-end development technologies, including Angular or similar frameworks.
  • Strong understanding of software development principles, object-oriented design, and distributed application architectures.
  • Experience designing, implementing, and maintaining automated testing solutions including unit, functional, and integration testing.
  • Experience conducting code reviews and driving engineering quality improvements.
  • Strong troubleshooting and root cause analysis skills within complex application environments.
  • Demonstrated understanding of secure coding practices and application security principles.
  • Experience analyzing and optimizing system performance, scalability, and operational reliability.
  • Strong knowledge of data structures, algorithms, and software design patterns.
  • Excellent communication, collaboration, and problem-solving skills.

Nice To Haves

  • Experience working on payment processing, transaction processing, or financial technology platforms.
  • Experience with cloud-native architectures and containerized deployment models.
  • Experience implementing CI/CD pipelines and DevOps practices.
  • Familiarity with observability platforms, monitoring tools, and operational excellence practices.
  • Experience supporting highly available mission-critical systems.
  • Experience mentoring engineers and influencing technical decisions across teams.

Responsibilities

  • Design, develop, test, deploy, and maintain scalable software applications that support Mastercard's payment processing platforms.
  • Build and enhance full-stack solutions utilizing Java, Spring Boot, Angular, APIs, and modern software engineering frameworks.
  • Collaborate with Product, Architecture, Platform Engineering, and Operations teams to translate business requirements into scalable technical solutions.
  • Contribute to application and service architecture decisions that improve scalability, maintainability, resilience, and long-term platform evolution.
  • Design and develop RESTful APIs and service integrations supporting enterprise-scale transaction processing.
  • Participate in Agile development activities including backlog refinement, sprint planning, standups, retrospectives, and solution reviews.
  • Develop automated unit, functional, and integration tests to ensure software quality, reliability, and maintainability.
  • Perform code reviews and provide constructive feedback to improve code quality, consistency, and adherence to engineering standards.
  • Troubleshoot and resolve complex technical issues across applications, APIs, databases, and production environments.
  • Analyze system behavior and optimize application performance, scalability, and reliability for business-critical workloads.
  • Implement secure coding practices and proactively address application security risks throughout the software development lifecycle.
  • Design systems with operational readiness in mind, incorporating monitoring, logging, alerting, and observability best practices.
  • Support production deployments, incident response, root cause analysis, and continuous service improvement activities.
  • Mentor and support other engineers by sharing technical knowledge and promoting engineering best practices.
  • Continuously evaluate emerging technologies, frameworks, and tools that improve software delivery and platform capabilities.

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
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