Software Engineer II

Mastercard•O'fallon, MO

16d•$92,000 - $147,000•Onsite

About The Position

Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all. The Fraud Products team (part of O&T) is developing new capabilities for MasterCard's Decision Management Platform, which serves as the core for multiple business solutions to combat fraud and validate cardholder identity. Our patented Java-based platform processes billions of transactions per month in tens of milliseconds using a multi-tiered, message-oriented approach for high performance and availability. MasterCard software engineering teams leverage Agile development principles, advanced development, design and test automation practices, and an obsession over security, reliability, and performance to deliver solutions that delight our customers. We're looking for talented Software Testing Engineers to design and develop regression and integration test automation for fraud applications using advanced technologies that are revolutionizing payments.

Requirements

Strong software development and testing experience, particularly using Java.
Experience designing, developing, testing, and supporting enterprise-scale software applications.
Strong understanding of object-oriented programming, software design principles, and commonly used design patterns.
Experience contributing to software architecture discussions and designing scalable, highly available distributed systems.
Experience developing automated unit, functional, and integration tests.
Knowledge of data structures, algorithms, and performance optimization techniques.
Familiarity with secure coding practices and application security fundamentals.
Experience performing code reviews and promoting software engineering best practices.
Strong troubleshooting and debugging skills with the ability to identify and resolve complex technical issues.
Experience analyzing application performance and optimizing systems for scalability and reliability.
Familiarity with multi-tier web applications and high-performance transaction processing systems.
Experience working with development, testing, and release teams in Agile environments.
Skilled at explaining technical problems clearly and succinctly.
Strong communication, collaboration, and organizational skills.
Self-motivated with a high degree of initiative and ownership.
Ability to learn quickly and work effectively within geographically distributed teams.
Knowledge of Agile software development practices, continuous integration, and test-driven development.
Bachelor's degree in Computer Science, Engineering, Information Systems, Information Technology, or equivalent practical experience.
Strong Core Java programming experience
Experience designing and developing enterprise software applications
Experience with Continuous Integration systems (e.g., Jenkins)
Oracle, PL/SQL, and advanced SQL scripting
Experience with code reviews and software development best practices
Knowledge of software design principles and object-oriented design
Experience with automated unit, functional, and integration testing
Experience with Testing frameworks such as TestNG and Spock
Knowledge of secure coding practices
Experience with production troubleshooting and root cause analysis
Knowledge of Splunk, including dashboards, alerts, and monitoring
Experience with IDEs such as IntelliJ IDEA or JBoss Developer Studio

Nice To Haves

Experience with distributed systems at scale
Experience contributing to software architecture and scalability initiatives
Knowledge of performance engineering and application optimization
Experience designing observable and operationally resilient systems
Experience using tools such as Postman, PuTTY, WinSCP, and Toad
Experience working within cloud-native or microservices-based environments

Responsibilities

Successfully deliver as part of a team on major projects and complex assignments with broad scope and long-term business implications.
Design, develop, test, and maintain high-quality software solutions using Java and related technologies.
Contribute to software design and system architecture discussions to build scalable, resilient, and high-performing applications.
Build and enhance features, services, and APIs that support Mastercard's fraud prevention and payment processing platforms.
Develop and maintain automated unit, functional, and integration tests as part of the software development lifecycle.
Participate in code reviews to ensure software quality, maintainability, security, and adherence to engineering standards.
Collaborate with software engineers, quality engineers, product teams, and platform teams to deliver solutions efficiently.
Apply secure coding practices and engineering best practices throughout the development lifecycle.
Contribute to performance engineering efforts by identifying bottlenecks and implementing scalable solutions.
Design and build systems with strong operability, observability, monitoring, and reliability characteristics.
Assist with production support by troubleshooting complex issues, identifying root causes, and implementing sustainable solutions.
Continuously improve development, testing, deployment, and release automation processes.
Be an integral part of Agile SAFe discovery, elaboration, sprint planning, and delivery activities.
Communicate, collaborate, and work effectively in a global environment.

Benefits

paid parental leave
flexible work hours
gift matching
volunteer incentives
professional learning and development
insurance (including medical, prescription drug, dental, vision, disability, life insurance)
flexible spending account and health savings account
paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave)
80 hours of Paid Sick and Safe Time
25 days of vacation time and 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