Lead Software Engineer — Validation & Resilience (Hybrid)

Mastercard Inc.; O’Fallon (MO); Hybrid; USD 140,000 - 231,000; Full time

Job summary

Mastercard Inc. in O'Fallon, MO is seeking a Lead Software Engineer to design, build, and validate mission-critical, highly available systems that process secure financial transactions at global scale.

In this hybrid role, you'll combine hands-on software engineering with quality engineering to define validation strategies across functional behavior, transaction integrity, resiliency, performance, failover, recovery, monitoring, and production readiness.

Qualifications

• Hands-on development experience with production-quality applications.
• Experience with Java and/or Python services and automation.
• Strong debugging and root-cause analysis across software and network layers.
• Experience validating distributed, highly available systems.

Responsibilities

• Design, develop, and enhance software and automation to support system validation.
• Define validation strategies for functional behavior, performance, resiliency, and production readiness.
• Build, configure, maintain, and troubleshoot lab and test environments that mirror production.
• Analyze logs, traces, metrics, and network traffic to troubleshoot issues across teams.
• Champion automation and production readiness practices across the lifecycle.

Skills

Java

Python

Distributed systems

Test automation

Networking TCP/IP

Agile

Debugging

Education

Bachelor's degree in Computer Science / Software Engineering / Information Technology / Engineering / Mathematics

Tools

Automation frameworks

Lab environments

Load testing tools

Job description

Mastercard Inc. in O'Fallon, MO is seeking a Lead Software Engineer to design, build, and validate mission-critical, highly available systems that process secure financial transactions at global scale.

In this hybrid role, you'll combine hands-on software engineering with quality engineering to define validation strategies across functional behavior, transaction integrity, resiliency, performance, failover, recovery, monitoring, and production readiness.