Software & DataHybrid
Lead Software Engineer
MastercardO'Fallon, MO
$140,000 - $231,000 USD
Posted Oct 22, 2026
What you’d do
Lead software engineer role focused on financial messaging platforms and high-availability transaction systems. The position is full time in O'Fallon, Missouri, involving adherence to Mastercard's information security policies. Found on the employer's careers page on Oct 23, 2026. Apply through the link.
You’ll need
- Experience with financial messaging platforms or payment switching systems
- Knowledge of ISO 8583
- Experience with telecommunications platforms or high-availability transaction-processing
- Experience testing proxy, load-balancer, or active-active failover architectures
- Full-time schedule
Our summary of the listing. The full listing has the details.