Java Microservices Engineer for Secure Payments

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

Job summary

Mastercard is seeking a Software Engineer II to join our Core Payments team in the US. You will design, build, and maintain Java microservices that power Identity Check and digital payment authentication, ensuring security and high throughput.

You will work in a fast-paced Agile environment, partnering with product owners and QA to deliver reliable software, implement observability, and improve production readiness across platforms.

Qualifications

• Proficiency in Java microservice development with Spring frameworks.
• Experience building RESTful APIs.
• Experience with Kubernetes and Docker.
• Familiarity with Git and Bitbucket workflows.
• Understanding of secure coding and OWASP guidelines.
• Experience with testing frameworks like JUnit/Mockito.

Responsibilities

• Design, develop, test, and maintain Java-based microservices.
• Collaborate on system architecture to promote scalability and reliability.
• Implement secure coding practices and participate in code reviews.
• Develop automated tests and support CI/CD processes.
• Troubleshoot and optimize performance in production and staging environments.

Skills

Java

Spring Boot

Microservices

RESTful APIs

Kubernetes

Docker

Git

CI/CD

JUnit/Mockito

Distributed systems

Tools

Kubernetes

Docker

Bitbucket

Tomcat

Oracle Database

Redis

GitHub Copilot

Job description

Mastercard is seeking a Software Engineer II to join our Core Payments team in the US. You will design, build, and maintain Java microservices that power Identity Check and digital payment authentication, ensuring security and high throughput.

You will work in a fast-paced Agile environment, partnering with product owners and QA to deliver reliable software, implement observability, and improve production readiness across platforms.