Software Engineer II at Mastercard in O'Fallon, MO

Summary: Mastercard is a global technology company in the payments industry, aiming to connect and power an inclusive digital economy. The Software Engineer II role involves contributing to the design, development, testing, and maintenance of software solutions under the guidance of more senior engineers, focusing on secure and scalable service development. 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 Required Qualifications: - 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 Required Skills: Software engineering concepts, Software development lifecycle, Java, Agile development practices, Testing concepts, Version control, Secure service development, Encryption technologies, Enterprise engineering standards, Unit testing, Automated testing, Analytical 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, 56 hours of Paid Sick and Safe Time, Jury duty leave, On-site fitness facilities in some locations