Software Engineer II - Decision Management Program

Responsibilities

• Design, develop, test, and maintain Java/Spring Boot microservices.
• Shape software components and service interactions to meet goals for scalability, maintainability, and reliability.
• Implement enhancements, new features, and defect fixes across Notification Manager services.
• Engage in technical design discussions and translate requirements into working software.
• Write clean, secure code in line with Mastercard engineering standards.
• Develop and maintain automated unit, integration, and API tests.
• Contribute to modern event-driven architectures using Kafka and distributed processing patterns.
• Support architecture decisions and designs that enable platform scalability, resiliency, and long-term evolution.
• Support platform modernization efforts, including service decomposition, resiliency improvements, performance optimization, and cloud-native deployment practices.
• Assist in reducing technical debt and improving platform operational efficiency.
• Participate in production support, incident response, and root cause analysis.
• Monitor system health with observability tools and metrics; analyze performance to optimize throughput, latency, and resource use.
• Troubleshoot application, infrastructure, and data-related issues; support releases and production readiness.
• Contribute to operability engineering practices that enhance reliability, monitoring, and supportability.
• Collaborate with engineers, QA, PMTs, TPMs, and partner teams to deliver roadmaps.
• Participate in Agile ceremonies, elaboration, estimation, and backlog refinement.
• Engage in peer code reviews to ensure quality, security, and adherence to standards.
• Contribute to technical documentation and knowledge sharing; mentor junior engineers as appropriate.

Requirements

• Bachelor's degree in Computer Science, Engineering, or equivalent experience.
• 2–5 years of software development experience.
• Experience building applications with Java and Spring Boot.
• Understanding of REST APIs and microservice architectures.
• Familiarity with messaging or event-driven systems.
• Solid grasp of software design principles, object-oriented programming, data structures, and algorithms.
• Experience with source control, code reviews, and CI/CD practices.
• Working knowledge of SQL and relational databases.
• Strong troubleshooting and problem-solving abilities.
• Ability to work independently on assigned deliverables while collaborating effectively within a team.

Technologies

• Java (JDK 17)
• Spring Boot
• Kafka Messaging
• REST APIs
• Oracle / SQL
• GitHub / Bitbucket
• CI/CD Pipelines
• Splunk & Dynatrace
• PCF / Tanzu
• Distributed Event-Driven Architecture

Benefits

• Health insurance (medical, prescription drug, dental, vision, disability, life)
• Flexible spending account (FSA) and health savings account (HSA)
• Paid leaves including 16 weeks of new parent leave and up to 20 days of bereavement leave
• Paid Sick and Safe Time (80 hours)
• Vacation time and personal days (25 days of vacation and 5 personal days, pro-rated)
• 10 annual paid U.S. observed holidays
• 401(k) with company match
• Deferred compensation for eligible roles
• Fitness reimbursement or on-site facilities
• Tuition reimbursement

Corporate Security Responsibility

• Adhere to Mastercard security policies and practices
• Protect confidentiality and integrity of information accessed
• Report any suspected information security violation or breach
• Complete periodic mandatory security trainings per Mastercard guidelines

Pay Range

O'Fallon, Missouri: $92,000 - $147,000 USD per year

How you'll make an impact

You will engage deeply with backend engineering, solving complex problems and gaining insight into how large-scale distributed systems operate. The role suits someone who is curious, collaborative, and proactive, taking ownership of their work while continuously seeking ways to improve the platform, codebase, and engineering practices. You will apply solid software design principles, contribute to architectural discussions, leverage strong problem-solving skills, and deliver high-quality, secure software.

Success measures (First 12 Months)

• Independently deliver stories and enhancements from design through production deployment.
• Contribute meaningful improvements to platform reliability, performance, or maintainability.
• Own one or more Notification Manager services or technical domains.
• Participate effectively in production support and incident investigations.
• Build strong partnerships with Product, TPM, QA, and peer engineering teams.
• Continuously improve technical knowledge and contribute to team engineering practices.