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Mastercard · 9 hours ago

Sr Principal Software Engineer

O'Fallon, MO

Full-time

Hybrid

Senior Level, Lead/Staff

$212K/yr - $339K/yr

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. This is a senior technical leadership role focused on driving innovation, architecture, and engineering excellence across Mastercard, involving collaboration with business and IT stakeholders, influencing technology strategy, and mentoring engineering teams.

FinanceFinancial ServicesInformation TechnologyPayments

Growth Opportunities

H1B Sponsor Likely

Responsibilities

Lead and contribute to enterprise-wide initiatives, frameworks, patterns, and proof-of-concepts

Provide technical leadership, mentorship, and advisory support to engineering teams

Architect solutions for complex, distributed systems and mission-critical applications

Drive modernization, scalability, and performance improvements across the technology stack

Engage in public speaking, publish technical papers/blogs, and represent Mastercard in external communities

Conduct technical due diligence for acquisitions and guide strategic technology decisions

Facilitate architecture reviews, guild initiatives, and talent development processes

Promote best practices in software engineering, DevOps, automation, and SDLC optimization

Qualification

Cloud architectureDevOpsPerformance optimizationArchitecting complex systemsDistributed computingFull-stack developmentAPI designSecurity standardsMentoring engineersBusiness acumenCommunication skills

Required

Proven experience leading large-scale global projects and architecting complex systems

Hands-on coding ability across multiple languages and platforms (Windows, Linux, Mainframe)

Expertise in cloud architecture, DevOps, automation, and performance optimization

Deep understanding of SDLC methodologies, security standards (OWASP, CWE), and interoperability

Ability to evangelize engineering principles and reference architectures

Strong judgment in trade-offs and prioritization for regulatory, security, and business needs

Benefits

Insurance (including medical, prescription drug, dental, vision, disability, life insurance)

Flexible spending account and health savings account

Paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave)

80 hours of Paid Sick and Safe Time

25 days of vacation time and 5 personal days, pro-rated based on date of hire

10 annual paid U.S. observed holidays

401k with a best-in-class company match

Deferred compensation for eligible roles

Fitness reimbursement or on-site fitness facilities

Eligibility for tuition reimbursement

Company

Mastercard

Glassdoor4.2

Mastercard is a financial network that processes payments between banks and cardholders.

Founded in 1966

Purchase, New York, USA

10001+ employees

http://www.mastercard.com

H1B Sponsorship

Mastercard has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

Distribution of Different Job Fields Receiving Sponsorship

Represents job field similar to this job

Trends of Total Sponsorships

2025 (540)

2024 (319)