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Principal Software Engineer

O'Fallon, Missouri, US💼 Full-time💰 $170,000–$170,000🗓 2026-09-22 → 2026-09-26

Core

Senior individual contributor driving enterprise engineering strategy, architecture standards, and technology excellence across Mastercard's distributed systems and cloud-native platforms.

Role type

Principal Software Engineer (Strategy & Architecture)

Builds

Enterprise architecture patterns, reusable engineering capabilities, AI-enabled engineering tools, and knowledge platforms.

Domain

Fintech / Enterprise Software Architecture / Cloud-Native Platforms

Deliverable

production ML models | product features | infrastructure

Required skills

Software Architecture, Distributed Systems, Cloud Platforms (AWS/Azure/GCP), Microservices, Platform Engineering, Reliability Engineering (SRE), Observability & Monitoring, AI/LLM Engineering Solutions, DevSecOps & CI/CD, Technical Strategy

Preferred skills

Architecture Governance, Enterprise Integration, Engineering Standards & Best Practices

Responsibilities

Provide technical leadership and architectural guidance across multiple engineering organizations; Partner with platform CTOs and architects to evaluate technology investments; Lead architecture reviews and technical design discussions; Define and evolve enterprise architecture patterns and reference implementations; Design and develop AI-enabled engineering tools and knowledge platforms; Influence the evolution of Engineering Principles and Secure Software Lifecycle Standards; Mentor senior engineers and architects.

Seniority

Principal, hands-on IC with strategic influence

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