Senior Site Reliability Engineer

Mastercard

O Fallon, MO

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JOB DETAILS

SALARY

$96,000–$163,000 Per Year

SKILLS

Algorithms, Analysis Skills, Automation, Best Practices, Business Operations, C Programming Language, C++ Programming Language, CPU (Central Processing Unit), Caching, Capacity Management, Change Management, Chef (Configuration Management), Communication Skills, Computer Science, Computer Security, Configuration Management, Consulting, Continuous Deployment/Delivery, Continuous Integration, Cross-Functional, Cryptography, Customer Relations, Customer Support/Service, Data Quality, Data Structures, Database Architecture, DevOps, Distributed Computing, Diversity, Git, Go Programming Language (Golang), Groovy Programming Language, High Availability, Hubs, IT Service Management (ITSM), ITIL (IT Infrastructure Library), Identify Issues, Incident Response, Industry Standards, Information Assets, Information/Data Security (InfoSec), Java, Jenkins, Large-Scale Systems, Maven, Medical Records, Memory Hardware, Mentoring, Operating Systems, Operations Planning, Oracle, Oracle PL-SQL, Performance Tuning/Optimization, Perl Programming Language, PostgreSQL, Problem Solving Skills, Product Lifecycle, Product/Service Launch, Production Management, Production Support, Python Programming/Scripting Language, Query Optimization, Relational Databases (RDBMS), Reliability Engineering, Risk, Risk Management, Root Cause Analysis, Ruby, SQL (Structured Query Language), SSH (Secure Shell), SSL-TLS (Secure Socket Layer - Transport Layer Security), Sales Pipeline, Scripting (Scripting Languages), Security Attacks, Software Administration, Software Design, Splunk, Systems Analysis, TCP (Transmission Control Protocol), Team Player

LOCATION

O Fallon, MO

POSTED

Today

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Senior Site Reliability Engineer
Overview:
Who Is Mastercard:Mastercard is committed to connecting and powering an inclusive, digital economy that benefits everyone, everywhere. The company focuses on making transactions safe, simple, smart, and accessible. Through secure data, global networks, strong partnerships, and a passion for innovation, Mastercard helps individuals, financial institutions, governments, and businesses reach their full potential.

A core part of Mastercard's identity is its Decency Quotient (DQ) -a cultural foundation that guides how employees work, collaborate, and lead. Mastercard fosters a culture of inclusion that respects individual strengths, perspectives, and experiences. The company believes that diversity drives better decisions, fuels innovation, and leads to stronger business outcomes.

Technology at Mastercard shapes the future of the digital economy. The organization builds revolutionary systems that make global commerce more connected, inclusive, sustainable, and secure.

Mastercard technologists work on a truly global network, creating critical systems and products that enable people everywhere to access essential goods and services. The culture is inclusive, diverse, and collaborative-celebrating strengths, valuing experience, and offering flexibility to build a career across disciplines and continents.

Employees work alongside experts and leaders at all levels, improving existing systems and inventing what comes next.
About the Role:
Business Operations (Biz Ops) - SRE / Operational Readiness Architect

The Business Operations (Biz Ops) team serves as the production readiness steward for Mastercard products. As a Business Operations Site Reliability Engineer (SRE) / Operational Readiness Architect , the mission is to ensure platform stability, health, and resilience.

Key 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

Team Specific Skills /Operational Readiness Architect
- 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.
ITSM Practices
- Analyze ITSM activities and provide feedback to development teams on operational gaps and resiliency concerns.
Role Qualifications
- 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 Qualifications
- 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.
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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

Great to Have
- Awareness of security implementations, certificate lifecycle management, mutual TLS, SSL handshake, SSH keys, and encryption methods (symmetric/asymmetric).
Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.
Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

Abide by Mastercard's security policies and practices;
Ensure the confidentiality and integrity of the information being accessed;
Report any suspected information security violation or breach, and
Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.

In line with Mastercard's total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: 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; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.
Pay Ranges

O'Fallon, Missouri: $96,000 - $163,000 USD

About the Company

Mastercard

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