Lead C/C++ Engineer for High-Impact Systems

Mastercard; O’Fallon (MO); On-site; USD 140,000 - 210,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Disability insurance

Life insurance

HSA/FSA

Paid parental leave

Paid vacation

Sick time

Holidays

401k match

Tuition reimbursement

Fitness reimbursement

Job summary

Mastercard is seeking a Lead Software Engineer (C/C++) to join the global credit card authorization team. You will design, implement and review high‑assurance software, lead feature development, and mentor junior engineers while coordinating with product management and other leads.

You will develop in C/C++ on Linux, participate in CI/CD automation, drive quality gates, and contribute to architecture decisions for distributed real-time systems in an Agile environment.

Qualifications

• Have you written many lines of code in C or C++?
• Do you like solving complex challenges?
• Have you set technical direction for your team and mentored junior engineers?
• Do you have experience in automation (CI/CD)?
• Have you developed software for Linux operating systems?
• Do you have experience and prefer working on an Agile team?
• Have you worked on embedded or real-time distributed systems?
• Are you passionate about quality and engineering standards?

Responsibilities

• Partner with Product Management to elaborate features, stories, and test strategy for each initiative
• Create technical designs and assign work to developers
• Develop complex stories in C and write unit tests in C++ (Google Test)
• Be a quality gate by leading code and design reviews
• Collaborate with other Principals and Leads to define interfaces and interactions between systems
• Advise on implementation strategy for successful deployment
• Implement development process improvements and automation
• Coach and develop junior employees
• Deliver department and external presentations

Skills

C/C++ proficiency

Tools

Linux

Google Test

Job description

Mastercard is seeking a Lead Software Engineer (C/C++) to join the global credit card authorization team. You will design, implement and review high‑assurance software, lead feature development, and mentor junior engineers while coordinating with product management and other leads.

You will develop in C/C++ on Linux, participate in CI/CD automation, drive quality gates, and contribute to architecture decisions for distributed real-time systems in an Agile environment.