# Site Reliability Engineer I

**Company**: Mastercard
**Location**: O'Fallon, Missouri
**Experience**: entry
**Job type**: full-time
**Salary**: $61,000 - $102,000 USD
**Category**: Engineering
**Industry**: Technology

**Apply**: https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Site-Reliability-Engineer-I_R-292697-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/job/site-reliability-engineer-i-de2911da-a52/

## Description

Mastercard's Service Operations Technology (SOT) BizOps team is seeking a Site Reliability Engineer (SRE) to support and enhance enterprise infrastructure, asset management, automation, and operational platforms.

This role focuses on reliability, observability, automation, release management, and operational excellence across business-critical services. The ideal candidate will be passionate about understanding complex systems, automating repetitive work, and improving platform reliability.

**Responsibilities**

- Support the full service lifecycle from design and implementation through deployment, operation, and optimization.

- Serve as an operational owner for critical enterprise platforms, ensuring reliability, availability, performance, and scalability.

- Support production readiness reviews, launch assessments, capacity planning, and operational validation.

- Monitor, maintain, and troubleshoot services in production environments.

- Lead incident response, root cause analysis, and implementation of long-term corrective actions.

- Drive automation initiatives that reduce operational toil and improve platform stability.

- Support releases and deployments while ensuring production readiness and operational excellence.

- Perform operating system maintenance, patching, vulnerability remediation, and lifecycle management.

- Analyze operational data and ITSM activities to identify resiliency improvements and operational risks.

- Collaborate with globally distributed teams across multiple regions and time zones.

- Maintain operational documentation and contribute to knowledge sharing and mentoring efforts.

**Requirements**

- Experience administering enterprise platforms in production environments, including upgrades, patching, troubleshooting, performance tuning, and operational support.

- Experience with CMDB, discovery, asset management, inventory management, or related enterprise technologies.

- Strong Linux/Unix administration skills; working knowledge of Windows administration and authentication technologies including Active Directory, LDAP, SSH, and service accounts.

- Experience supporting software releases, production changes, and operational readiness activities.

- Strong scripting and automation skills using Python, PowerShell, Bash, or similar technologies.

- Experience with APIs, integrations, workflow automation, and orchestration technologies.

- Understanding of monitoring, observability, alerting, and operational health management.

- Experience troubleshooting distributed systems across infrastructure, application, network, and integration layers.

- Strong analytical, problem-solving, and root cause analysis skills.

- Ability to manage operational responsibilities while driving strategic automation and platform improvements.

- Strong communication and stakeholder management skills.

- Ability to effectively manage and resolve high-severity production incidents.

**Additional Qualifications**

- Bachelor's degree in Computer Science, Engineering, Mathematics, or a related field, or equivalent experience.

- Experience with software engineering principles, automation, scripting, pipeline management, and system design.

- Strong sense of ownership, urgency, and systematic problem-solving.

- Experience debugging, optimizing, and automating complex technical environments.

- Ability to manage competing priorities and work effectively with multiple stakeholders.

- Experience in one or more programming languages such as Python, Java, Go, C++, Ruby, or similar.

- Knowledge of Site Reliability Engineering principles, DevOps practices, observability, automation-first operations, and continuous improvement.

- Experience working across development, operations, product, and infrastructure teams.

- Familiarity with source control systems, CI/CD platforms, artifact repositories, and infrastructure automation technologies.

- Demonstrated passion for innovation, automation, operational excellence, and continuous learning.

**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

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## Skills

### Required
- Linux/Unix administration
- Python
- PowerShell
- Bash
- scripting
- automation
- API
- integrations
- workflow automation
- orchestration technologies
- monitoring
- observability
- alerting
- operational health management
- troubleshooting
- distributed systems
- analytical
- problem-solving
- root cause analysis

### Nice to have
- Java
- Go
- C++
- Ruby
- CI/CD pipelines
- DevOps practices
- Site Reliability Engineering principles

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Source: [Apply at mastercard.wd1.myworkdayjobs.com](https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Site-Reliability-Engineer-I_R-292697-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)