# 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**: Finance

**Apply**: https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Site-Reliability-Engineer-I_R-294460?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/job/site-reliability-engineer-i-b9ed89a0-803/

## Description

Mastercard is seeking a Site Reliability Engineer I to support and continuously improve enterprise infrastructure, configuration management, discovery, asset and inventory, automation, and operational technology platforms.

The successful candidate will support production services while developing engineering skills that help reduce operational toil, improve service visibility, automate repetitive activities, and improve platform reliability.

Responsibilities:

- Support the day-to-day operation and maintenance of enterprise technology platforms and supporting infrastructure.

- Perform routine system and application maintenance using established procedures and engineering standards.

- Support monitoring of service health, availability, performance, capacity, and operational events.

- Troubleshoot and resolve basic-to-moderate issues across application, infrastructure, network, operating-system, and integration layers.

- Escalate complex technical issues while assisting experienced engineers with investigation and resolution.

- Support production incidents and participate in root cause analysis and corrective-action activities.

- Perform routine Linux/Unix system administration and support related enterprise infrastructure.

- Participate in operating system and application upgrades, patching, vulnerability remediation, releases, deployments, and production changes.

- Support production-readiness reviews and operational-validation activities for new or changed services.

- Identify opportunities for automation and contribute to scripts and tools that reduce repetitive operational activities and toil, with guidance from experienced engineers.

- Contribute to monitoring, alerting, health-check automation, dashboards, and observability improvements using enterprise technologies such as Splunk and Dynatrace.

- Work with REST APIs and system integrations in support of automated operational workflows.

- Develop practical experience with source control, CI/CD, release pipelines, deployment automation, and configuration-management technologies.

- Assist with capacity, performance, reliability, and system-health analysis.

- Follow incident, problem, change, configuration-management, security, and operational risk-management practices.

- Maintain technical documentation, operating procedures, troubleshooting guides, and knowledge articles.

- Participate in technical reviews and quality checks that support service stability and operational readiness.

- Collaborate with product, software engineering, infrastructure, cybersecurity, and operations teams.

- Participate in knowledge-sharing activities and continuously develop technical expertise in SRE, automation, observability, cloud, and platform engineering.

Qualifications:

- Bachelor's degree in Computer Science, Engineering, Mathematics, Information Technology, or a related discipline, or equivalent practical experience.

- Foundational knowledge of Linux/Unix systems and system-administration concepts.

- Foundational programming or scripting experience using Python, PowerShell, Bash, Java, Go, or similar technologies.

- Understanding of networking fundamentals including TCP/IP, DNS, HTTP/HTTPS, SSH, and basic network troubleshooting.

- Understanding of software engineering and automation concepts.

- Familiarity with monitoring, logging, alerting, and observability concepts.

- Systematic problem-solving and troubleshooting abilities.

- Understanding of production support, incident response, and change-management practices.

- Ability to document technical procedures, issues, and resolutions effectively.

- Strong written and verbal communication skills.

- Ability to collaborate effectively across technical and business teams.

- Strong sense of ownership, curiosity, and interest in automation 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 systems
- system-administration concepts
- Python
- PowerShell
- Bash
- Java
- Go
- TCP/IP
- DNS
- HTTP/HTTPS
- SSH
- software engineering
- automation concepts
- monitoring
- logging
- alerting
- observability concepts

### Nice to have
- Splunk
- Dynatrace
- REST APIs
- system integrations
- automated operational workflows
- source-control and repository technologies
- CI/CD
- release and deployment technologies
- configuration management and infrastructure automation technologies
- AWS
- Azure
- enterprise cloud environments

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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-294460?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)