Software Engineer II

Mastercard • O'fallon, MO

1d • 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 Decision Management Program (DMP) delivers industry‑leading intelligence that enables faster, smarter decisioning at global scale across the payment journey and beyond. Through a suite of products, DMP structures and applies complex business logic to help teams manage risk, adapt quickly to changing regulatory, geopolitical, or market conditions, and drive profitable customer engagements. Built for resiliency, availability, and future growth, DMP empowers Mastercard’s market-facing programs with agile, intelligent decision management capabilities worldwide.

A Software Engineer II is an early‑career or entry‑level engineer who contributes to the design, development, testing, and maintenance of software solutions under the guidance of more senior engineers. This role is ideal for individuals who have a strong foundation in software development fundamentals and are eager to grow their technical skills while delivering value to real-world systems. Software Engineer II roles follow clearly defined guidelines and focus on building core engineering skills, understanding enterprise systems, and learning Mastercard’s engineering standards and processes.

Requirements

• Bachelor’s degree in computer science, Engineering, Information Technology, or equivalent experience
• Foundational knowledge of software engineering concepts and the software development lifecycle
• Experience with one or more programming languages (Java is a must)
• Familiarity with Agile development practices, testing concepts, and version control
• Strong analytical, problem‑solving, and communication skills
• Ability to work effectively in a collaborative, team‑based environment
• Willingness to learn new technologies and tools

Responsibilities

• Contribute to the design, development, testing, and implementation of software solutions under guidance from senior engineers
• Develop and maintain application code in accordance with established engineering, quality, and security standards
• Create and execute unit tests and support automated testing efforts
• Participate in code reviews and incorporate feedback
• Assist with troubleshooting, defect resolution, and application support
• Collaborate with cross‑functional teams to deliver assigned work on schedule
• Adhere to audit, compliance, and information security requirements

Benefits

• 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, pro-rated based on date of hire
• 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

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Number of Employees: 5,001-10,000 employees