Mastercard · 14 hours ago
Senior Reliability Engineer
O'Fallon, MO
Full-time
Hybrid
Mid, Senior Level
$96K/yr - $163K/yrMastercard is committed to connecting and powering an inclusive, digital economy that benefits everyone, everywhere. The role of Senior Reliability Engineer focuses on ensuring platform stability, health, and resilience while fostering developer ownership and empowering teams to build scalable products.
FinanceFinancial ServicesInformation TechnologyPayments
Responsibilities
Foster developer ownership and empower teams to build resilient, fault‑tolerant, scalable products
Support developers during the build phase with operational design, automation, capacity planning, and monitoring
Establish and enforce operational standards while promoting an agile, learning‑focused culture
Lead triage and root‑cause analysis with a focus on business impact and blameless post‑mortems
Engage early in the development lifecycle to proactively manage production and change activities
Drive risk management, compliance, and mitigation across environments
Align product and customer priorities with operational needs through continuous feedback
Support the application CI/CD pipeline for promoting software into higher environments through validation and operational gating, and lead Mastercard in DevOps automation and best practices
Practice sustainable incident response and blameless post-mortems
Take a holistic approach to problem solving, by connecting the dots during a production event thru the various technology stack that makes up the platform, to optimize mean time to recover
Work with a global team spread across tech hubs in multiple geographies and time zones
Share knowledge and mentor junior resources
Serve as the primary contact for application health, performance, and capacity
Support services before launch through system design consulting, capacity planning, and launch reviews
Partner with development and product teams to define monitoring and alerting strategies
Build frameworks that enable zero‑downtime deployments
Analyze ITSM activities and provide feedback to development teams on operational gaps and resiliency concerns
Qualification
Required
BS in Computer Science or related technical field, or equivalent practical experience
Curiosity and appetite for automation, new technologies, and scalable architectures
Strong problem‑solving skills, communication abilities, ownership, and drive
Interest in large‑scale distributed systems design, analysis, and troubleshooting
Ability to work in diverse, matrix‑based, geographically distributed teams
Balance between long‑term system health and short‑term fixes
Ability to collaborate cross‑functionally with clear understanding of expected system behavior and monitoring needs
Experience in industry standard CI/CD tools like Git/Bitbucket, Jenkins, Maven, Artifactory, and Chef. Experience designing and implementing an effective and efficient CI/CD flow that gets code from dev to prod with high quality and minimal manual effort is desired
Experience in one or more of the following is preferred: C, C++, Java, Python, Go, Perl or Ruby
Ability to work in shifts and weekends when in needed & based on team members rotations & schedule
Preferred
Experience with algorithms, data structures, scripting, pipeline management, and software design
Experience working across development, operations, and product teams
Prior SRE experience
Expertise in RDBMS such as PostgreSQL and Oracle
Proficiency in SQL, PL/SQL, and PostgreSQL features
Strong understanding of database architecture, performance tuning, and query optimization
Experience with monitoring tools (e.g., Splunk, Dynatrace)
Experience in production support and ITIL processes
Experience with CI/CD tools: Git/Bitbucket, Jenkins, Maven, Artifactory, Groovy, Chef
Understanding of: Client‑server relationships, Network concepts (Layer 1–3), Stack trace analysis (TCP dumps, heap/CPU/memory/thread dumps), Load balancers and application firewalls, Operating system navigation, Logging and monitoring standards, High availability and business continuity, Caching concepts, Configuration management
Awareness of security implementations, certificate lifecycle management, mutual TLS, SSL handshake, SSH keys, and encryption methods (symmetric/asymmetric)
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
Mastercard is a financial network that processes payments between banks and cardholders.
Founded in 1966
10001+ employees
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)
Funding
Current Stage
Public CompanyTotal Funding
unknown2006-05-25IPO
Leadership Team
Michael Miebach
Chief Executive Officer
Ed McLaughlin
President & Chief Technology Officer
Recent News
2026-01-25
2026-01-23
Company data provided by crunchbase