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Software Engineer II

O'Fallon, Missouri, US💼 Full-time💰 $92,000–$92,000🗓 2026-09-28 → 2026-09-29

Core

Design, develop, test, deploy, and support secure, scalable, and reliable software solutions for critical payment capabilities across Mastercard's Network Solutions.

Role type

Mid-level IC software engineer (payments infrastructure)

Builds

Secure, scalable software applications and services for digital payment networks

Domain

Fintech / Payments / Distributed Systems

Deliverable

production ML models | product features

Required skills

Software design patterns, secure coding practices, unit/integration testing, CI/CD pipelines, performance optimization, troubleshooting, Agile methodologies, source control

Preferred skills

Enterprise application development, observability practices, architectural discussions

Technologies

CI/CD pipelines, source control, testing frameworks, monitoring tools

Responsibilities

Design and develop secure software applications; translate business requirements into technical solutions; participate in code reviews; troubleshoot and refactor existing applications; optimize application performance and scalability; create and maintain technical documentation; collaborate with Product and engineering partners.

Seniority

Mid-level, hands-on IC

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