Hybrid C/C++ Software Engineer II

Mastercard; O’Fallon (MO); Hybrid; USD 92,000 - 147,000; Full time

Job summary

Mastercard is seeking a Software Engineer II to design, implement, and maintain high‑quality C/C++ software for its Global Credit Authorization platform. You’ll work in a fast‑paced Agile environment and contribute to automated testing and reliable production support.

The role is hybrid in O'Fallon, MO with three days onsite. Strong problem solving and collaboration across teams are essential to succeed in this global-scale system.

Qualifications

• Bachelor's degree in CS/SE/IT or related field.
• Experience with C/C++ and Linux development.
• Experience with Agile methodologies and CI/CD.
• Ability to write automated unit tests.

Responsibilities

• Design, develop, and maintain high-quality C/C++ software.
• Deliver user stories within Agile sprint timelines with quality focus.
• Create unit tests and automated test coverage.
• Partner with QA for testing efforts (functional, integration, system).
• Participate in code reviews and technical design discussions.
• Collaborate with engineers, architects, and product owners.
• Own features and support production systems, on-call as needed.
• Develop documentation to support operations and maintainability.

Skills

C/C++ programming

Shell scripting

Unit testing (Google Test/JUnit)

Linux development

Git/Bitbucket

Distributed systems

Agile methodologies

Analytical thinking

Communication skills

Education

Bachelor's degree in Computer Science / Software Engineering / IT

Tools

Git

Bitbucket

Job description

Mastercard is seeking a Software Engineer II to design, implement, and maintain high‑quality C/C++ software for its Global Credit Authorization platform. You’ll work in a fast‑paced Agile environment and contribute to automated testing and reliable production support.

The role is hybrid in O'Fallon, MO with three days onsite. Strong problem solving and collaboration across teams are essential to succeed in this global-scale system.