Software & DataOn site
Senior Software Engineer
MastercardO'Fallon, MO
$115,000–184,000/yr
Posted Oct 6, 2026
What you’d do
Design and lead development of scalable, secure software applications, including architecture decisions, testing strategies, performance optimization, and code reviews. Full time; also mentors junior developers and resolves complex production issues. Found on the employer's careers page on Oct 6, 2026. Apply through the link.
You’ll need
- Software architecture and design experience
- Unit, functional, and integration testing
- Secure coding practices
- Code review and engineering standards leadership
- Mentoring junior developers
Our summary of the listing. The full listing has the details.