Site Reliability Engineer Jobs

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Site Reliability Engineer I, Launch Program 2027

Mastercard O'Fallon, MO

O'Fallon, MO

Today

$81k+/yr Full time Automation CI/CD Cloud Platform

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Job Description

Mastercard is hiring a Site Reliability Engineer I as part of the Launch Program 2027 in O'Fallon, MO (onsite). This early-career role emphasizes production readiness, platform stability, and operational practices that help teams deliver resilient, scalable products.

Role Overview

In the Launch Program 2027, the Site Reliability Engineer I role supports production readiness for Mastercard products and focuses on operational design, automation, capacity planning, monitoring, triage, and root cause analysis. The position also includes performing blameless post-mortems and engaging earlier in the development lifecycle to improve proactive delivery and operational outcomes. A key focus area is risk and compliance mitigation across environments, aligned with product and customer priorities through continuous feedback.

Responsibilities

Serve as the production readiness steward for Mastercard products.
Help ensure the platform is stable and healthy.
Foster developer-run ownership and support developers in building resilient products.
Assist developers during the application build phase using software run principles, including operational design, automation, capacity planning, and monitoring to enable fault-tolerant, scalable outcomes.
Create and enforce operations standards while supporting an agile and learning culture.
Support daily operations with a focus on triage and root cause, including understanding business impact of supported products.
Perform blameless post-mortems.
Engage early in the development lifecycle to be more proactive and upfront.
Proactively manage production and change activities to maximize customer experience and increase the value of supported applications.
Manage risk by tying activities to an overarching responsibility for compliance and risk mitigation across all environments.
Provide continuous feedback to align Product and Customer focused priorities with operational needs throughout the lifecycle.

Required Qualifications

Currently enrolled in a Bachelor’s or accelerated Master’s program, with an anticipated graduation date between December 2026 and June 2027.
Experience through projects or internships with programming/scripting (Python, Go, Bash, or similar), Linux/Unix, and foundational networking concepts.
Internship or strong project work involving cloud platforms (AWS, Azure, or GCP), DevOps practices, CI/CD pipelines, containers, and automation tools through academic or hands-on experience.
Understanding of system monitoring, observability, application reliability, troubleshooting, and performance optimization.
Exposure to tools such as Splunk, Dynatrace, Jenkins, Bitbucket, PCF, or similar technologies through coursework, projects, internships, or personal learning.
Strong analytical and problem-solving skills, with willingness to learn new technologies and collaborate in a team environment.
This role is not eligible for work authorization sponsorship. Candidates must be eligible to work in the United States, both now and in the future, without employer sponsorship.

Technologies

Python, Go, Bash
Linux/Unix
AWS, Azure, GCP
DevOps, CI/CD pipelines
Containers and automation tools
System monitoring and observability
Troubleshooting and performance optimization
Splunk, Dynatrace, Jenkins, Bitbucket, PCF

Compensation and Education

Location: O'Fallon, MO (onsite)
Salary: USD 81,000 per year
Education: Bachelor’s or accelerated Master’s degree (anticipated graduation December 2026 to June 2027)

Benefits

Insurance including medical, prescription drug, dental, vision, disability, and 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 company match
Deferred compensation for eligible roles
Fitness reimbursement or on-site fitness facilities
Eligibility for tuition reimbursement

Corporate Security Responsibility

Abide by Mastercard’s security policies and practices.
Ensure the confidentiality and integrity of information being accessed.
Report any suspected information security violation or breach.
Complete all periodic mandatory security trainings according to Mastercard’s guidelines.

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