Software Engineer II
Mastercard•O'fallon, MO
•$92,000 - $147,000•Onsite
About The Position
Software Engineers II at Mastercard design and code artificial intelligence, cloud, and machine learning platforms that provide mission-critical insights to many of the world’s leading organizations and governments. As a Software Engineer, you will develop these products and solutions with speed and agility as part of a small team. This will involve developing high-performing, highly scalable software solutions and products for some of the world’s top brands. Specific tasks vary depending on the project and the business unit that you join in.
Requirements
- Experience building RESTful services using Java and Spring Boot
- Hands-on experience developing and deploying applications (Java, Python, or C#)
- Understanding of microservices architecture and CI/CD pipelines
- Familiarity with event-driven architecture (Kafka, Axon)
- Ability to apply design patterns and structure code for maintainability
- Understanding of system design, scalability, and integrations
- Experience with unit and integration testing (JUnit or similar)
- Experience with test automation tools (Selenium, RestAssured, Cucumber)
- Ability to identify and improve performance issues
- Knowledge of secure coding practices and vulnerability management
- Experience using logging/monitoring tools (Splunk)
- Strong understanding of data structures and problem-solving
- Experience with code reviews and collaborative development
- Ability to troubleshoot and resolve application and system issues
Nice To Haves
- Familiarity with cloud environments (AWS, PCF) is a plus
Responsibilities
- Design, build, test, deploy, and maintain scalable applications and microservices
- Develop REST APIs using Java and Spring Boot with a focus on performance and reliability
- Apply software development, design, and architecture principles to deliver secure and scalable solutions
- Contribute to CI/CD pipelines (Jenkins) to improve delivery speed and quality
- Own work end-to-end, from design through production support
- Write and maintain unit and integration tests; contribute to test automation (JUnit, Selenium, RestAssured, Cucumber)
- Improve test coverage and overall software quality
- Apply secure coding practices and support vulnerability remediation (CVE remediation, upgrade automation)
- Identify and improve performance and scalability issues
- Participate in code reviews and follow engineering best practices
- Troubleshoot and resolve issues using structured debugging and tools like logging/monitoring (Splunk)
- Contribute to system reliability, operability, and monitoring
- Collaborate with team members and contribute to technical discussions and knowledge sharing
- Leverage AI tools to improve development productivity and ensure outputs are validated for quality and security
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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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
Associate degree
