Software Engineer I

Job overview

The Software Engineer I is an onsite role based in O'Fallon, MO. Compensation is specified as $72,000 - $115,000 per year, and this position supports the AI and Decision Product Enablement team at Mastercard. This role exists to develop and maintain high-performance software solutions for Mastercard’s Decision Management Platform, which is critical for fraud prevention and identity validation. The engineer will contribute to the full software development lifecycle, ensuring scalable and secure applications.

What you'll do

• Analyze system requirements and elaborate into user stories.
• Design, build, and test Java-based applications.
• Support unit, functional, and integration testing.
• Follow secure coding practices and participate in code reviews.
• Collaborate with cross-functional teams to resolve technical issues.

What we're looking for

Skills & competencies

full-time

day shift

o'fallon mo

software engineer

java

devops

agile

fraud prevention

mastercard

engineering

Work arrangement

• Weekend coverage required

Benefits & perks

• Medical, Dental, Vision, 401k match, 16 weeks new parent leave, 25 days vacation

Why this role

Competitive base salary and annual bonus eligibility

About the employer

Mastercard is hiring for this role. Industry: Custom Computer Programming Services. Sector: 54.