Mastercard

Senior Software Engineer

Mastercard
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1 day ago
O'Fallon, MO, USASenior
H1B sponsor

Base Salary

$115k - $184k/yr

Responsibilities

  • Design, develop, test, deploy, maintain, and support large-scale software applications and globally deployed payment gateway products.
  • Build scalable, secure, and maintainable backend solutions using Java 17+, Spring Framework, and Spring Boot.
  • Contribute to full-stack functionality using modern front-end frameworks such as React, Angular, or Vue.
  • Create and maintain unit, functional, and integration tests.
  • Perform code reviews and provide technical leadership, design guidance, mentorship, and knowledge sharing.
  • Troubleshoot complex application and system issues, perform root cause analysis, and implement sustainable solutions.
  • Design and maintain observability solutions using Dynatrace, Datadog, Splunk, and Grafana.
  • Improve performance, scalability, reliability, and operational readiness through monitoring, automation, and performance engineering.
  • Drive CI/CD and automation improvements using Jenkins, Artifactory, and related tooling.
  • Support applications deployed in public and private cloud environments, including PCF and Kubernetes-based platforms.

Requirements

  • Bachelor's or master's degree in Computer Science, Engineering, Information Technology, Information Systems, or a related field, or equivalent practical experience.
  • At least 5 years of experience developing and supporting large-scale, distributed software applications.
  • Advanced Java experience, preferably Java 17+, with strong Spring Framework and Spring Boot expertise.
  • Experience with software design, architecture, secure coding, modern front-end frameworks, automated testing, observability, CI/CD, automation, and public or private cloud environments.
  • Experience with Dynatrace, Datadog, or Splunk and with Jenkins and Artifactory.
  • Strong troubleshooting, performance optimization, and problem-solving skills.
  • Demonstrated ability to provide technical leadership through code reviews, design reviews, mentorship, and knowledge sharing.
  • Preferred experience with Docker, Kubernetes, PCF, AWS, Azure, GitHub Actions, Terraform, Ansible, Chef, Habitat, Grafana, Python, or Bash.
  • Knowledge of OWASP Top 10 and PCI DSS.

Benefits

  • Full-time employees generally receive medical, prescription drug, dental, vision, disability, and life insurance; flexible spending and health savings accounts; paid leaves; paid sick and safe time; vacation and personal days; paid U.S. holidays; 401(k) matching; eligible deferred compensation; fitness benefits; and tuition reimbursement.
  • The stated U.S. base salary range for O'Fallon, Missouri is $115,000-$184,000.

Tech Stack

AngularAnsibleAWSAzureBashChefDatadogDockerGitHub ActionsGrafanaJavaJenkinsKubernetesPivotal Cloud FoundryPythonReactSplunkSpring BootTerraformVue.js
Mastercard

About Mastercard

10,000+ employees

Mastercard builds and operates a global payments network used by banks, merchants, fintechs, and governments, offering card processing, real-time payments, tokenization, and fraud/risk services. It generates revenue from transaction processing and assessment/service fees across more than 200 countries and territories. Founded in 1966 and headquartered in Purchase, New York, Mastercard is a public company listed on the NYSE (ticker: MA).

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