Backend Engineer II – Notification Platform & Distributed Systems

Mastercard Inc.; O’Fallon (MO); On-site; USD 92,000 - 147,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401(k) with company match

Paid time off & holidays

Tuition reimbursement

Job summary

Mastercard is seeking a Software Engineer II for the Decision Management Program to design, develop, and maintain backend services powering the Notification Manager. You will build Java/Spring Boot microservices and contribute to modern event-driven architectures using Kafka.

The role emphasizes reliability, security, and collaboration with Product, TPMs, QA, and partner teams, with opportunities to mentor junior engineers and grow technical expertise in a scalable enterprise platform.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or equivalent experience.
• 2–5 years of software development experience.
• Experience developing applications using Java and Spring Boot.
• Understanding of REST APIs and microservice architectures.
• Familiarity with messaging or event-driven systems.
• Strong understanding 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 skills.
• Ability to work independently on assigned deliverables while collaborating effectively within a team.

Responsibilities

• Design, develop, test, and maintain Java/Spring Boot microservices.
• Develop and maintain automated unit, integration, and API tests.
• Participate in technical design discussions and translate requirements into working software.
• Write clean, maintainable, and secure code following Mastercard engineering standards.
• Support release activities and production readiness efforts.
• Contribute to operability engineering practices that improve system reliability, monitoring, and supportability.

Skills

Java

Spring Boot

REST APIs

Messaging systems

CI/CD

Education

Bachelor’s degree in Computer Science, Engineering, or equivalent experience

Tools

Kafka

Kubernetes

PCF/Tanzu

Splunk

Dynatrace

Job description

Mastercard is seeking a Software Engineer II for the Decision Management Program to design, develop, and maintain backend services powering the Notification Manager. You will build Java/Spring Boot microservices and contribute to modern event-driven architectures using Kafka.

The role emphasizes reliability, security, and collaboration with Product, TPMs, QA, and partner teams, with opportunities to mentor junior engineers and grow technical expertise in a scalable enterprise platform.