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Site Reliability Engineer I Jobs in Missouri (NOW HIRING)

Title and Summary Site Reliability Engineer I Overview: * Are you a born problem solver who loves to figure out how something works? * Are you a CI/CD geek who loves all things automation? * Do you ...

Site Reliability Engineer

Clayton, MO · On-site

$53.25 - $71/hr

Senior Site Reliability Engineer St. Louis, MO, this is a hybrid role that requires working onsite 3 days per week throughout the project. Also requires working onsite Monday-Friday the first week on ...

Site Reliability Engineer II

O Fallon, MO · On-site

$53.25 - $70.75/hr

Title and Summary Site Reliability Engineer II Site Reliability Engineer II Who is Mastercard? At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits ...

Site Reliability Engineer II

O Fallon, MO · On-site

$53.25 - $70.75/hr

Title and Summary Site Reliability Engineer II Site Reliability Engineer II Who is Mastercard? At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits ...

Site Reliability Engineer II

O Fallon, MO

$53.25 - $70.75/hr

Title and Summary Site Reliability Engineer II Site Reliability Engineer II Who is Mastercard? At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits ...

Site Reliability Engineer II

O Fallon, MO · On-site

$53.25 - $70.75/hr

Title and Summary Site Reliability Engineer II Site Reliability Engineer II Who is Mastercard? At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits ...

Site Reliability Engineer II

O Fallon, MO · On-site

$53.25 - $70.75/hr

Title and Summary Site Reliability Engineer II Site Reliability Engineer II Who is Mastercard? At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits ...

$44 - $58.50/hr

Our partner is looking for a Staff Site Reliability Engineer based in Netherlands. This is a fully remote opportunity for a highly experienced SRE leader to shape reliability across complex, AI ...

$44 - $58.50/hr

Our partner is looking for a Site Reliability Engineer based in Netherlands. This is a senior reliability engineering role focused on defining and advancing the infrastructure standards behind a ...

Senior Site Reliability Engineer

Berkeley, MO · On-site

$53.50 - $71/hr

Senior Site Reliability Engineer Company: The Boeing Company The Boeing Company is looking for a Senior Site Reliability Engineer to join the Air Dominance Site Reliability Engineering team located ...

Senior Site Reliability Engineer

Berkeley, MO · On-site

$53.50 - $71/hr

Senior Site Reliability Engineer Company: The Boeing Company The Boeing Company is looking for a Senior Site Reliability Engineer to join the Air Dominance Site Reliability Engineering team located ...

Lead Site Reliability Engineer

O Fallon, MO

$53.25 - $70.75/hr

Title and Summary Lead Site Reliability Engineer Summary Overview: Who is Mastercard? At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits everyone ...

Senior Site Reliability Engineer

Berkeley, MO · On-site

$53.50 - $71/hr

Senior Site Reliability Engineer Company: The Boeing Company The Boeing Company is looking for a Senior Site Reliability Engineer to join the Air Dominance Site Reliability Engineering team located ...

Lead Site Reliability Engineer

Berkeley, MO · On-site

$53.50 - $71/hr

Lead Site Reliability Engineer Company: The Boeing Company The Boeing Company is looking for a Lead Site Reliability Engineer to join the Air Dominance Site Reliability Engineering team located in ...

Lead Site Reliability Engineer

O Fallon, MO · On-site

$53.25 - $70.75/hr

Title and Summary Lead Site Reliability Engineer Summary Overview: Who is Mastercard? At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits everyone ...

Lead Site Reliability Engineer

O Fallon, MO · On-site

$53.25 - $70.75/hr

Title and Summary Lead Site Reliability Engineer Summary Overview: Who is Mastercard? At Mastercard technology, we work to connect and power an inclusive, digital economy that benefits everyone ...

Lead Site Reliability Engineer

Berkeley, MO · On-site

$53.50 - $71/hr

Lead Site Reliability Engineer Company: The Boeing Company The Boeing Company is looking for a Lead Site Reliability Engineer to join the Air Dominance Site Reliability Engineering team located in ...

Lead Site Reliability Engineer

Berkeley, MO · On-site

$53.50 - $71/hr

Lead Site Reliability Engineer Company: The Boeing Company The Boeing Company is looking for a Lead Site Reliability Engineer to join the Air Dominance Site Reliability Engineering team located in ...

Lead Site Reliability Engineer

Berkeley, MO · On-site

$53.50 - $71/hr

Lead Site Reliability Engineer Company: The Boeing Company The Boeing Company is looking for a Lead Site Reliability Engineer to join the Air Dominance Site Reliability Engineering team located in ...

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Site Reliability Engineer I information

What are the key skills and qualifications needed to thrive as a Site Reliability Engineer I?

To excel as a Site Reliability Engineer I, you need a foundational understanding of systems administration, networking, and programming, usually backed by a degree in computer science or related experience. Familiarity with cloud platforms (such as AWS or GCP), automation tools (like Ansible or Terraform), and monitoring solutions are typically expected, and certifications in these areas can be advantageous. Strong problem-solving abilities, effective communication, and a proactive mindset help you collaborate with development teams and respond efficiently to incidents. These skills are vital for maintaining reliable, scalable, and high-performing systems that support business operations.

What are some common challenges faced by a Site Reliability Engineer I, and how can they be addressed?

As a Site Reliability Engineer I, you may frequently encounter challenges such as managing incidents under pressure, balancing proactive improvements with urgent operational tasks, and learning to automate repetitive processes. To address these, it's important to develop strong communication skills for effective incident response, prioritize tasks with guidance from senior engineers, and continuously learn about automation tools and monitoring technologies. Collaborating closely with development and operations teams also helps build context and confidence in solving complex reliability issues.

What is the difference between Site Reliability Engineer I vs Software Engineer?

AspectSite Reliability Engineer ISoftware Engineer
Primary FocusEnsuring system reliability, uptime, and performanceDesigning, developing, and maintaining software applications
Required SkillsBasic scripting, monitoring, troubleshootingProgramming, software design, coding
CertificationsOften entry-level certifications in cloud or LinuxVaries; often no specific certifications required
Work EnvironmentOperations, DevOps teams, cloud platformsDevelopment teams, software projects

Site Reliability Engineer I focuses on maintaining system stability and performance, often working closely with operations teams. Software Engineers primarily develop new software features and applications. While both roles require technical skills, SRE I emphasizes reliability and monitoring, whereas Software Engineers focus on coding and software design.

Are site reliability engineers in demand?

Yes, site reliability engineers are in high demand due to the increasing reliance on cloud infrastructure, automation, and system stability. Companies seek SREs with skills in scripting, monitoring tools, and cloud platforms to ensure reliable service delivery, making it a growing and competitive field.

What job categories do people searching Site Reliability Engineer I jobs in Missouri look for?

The top searched job categories for Site Reliability Engineer I jobs in Missouri are:

Infographic showing various Site Reliability Engineer I job openings in Missouri as of August 2026, with employment types broken down into 1% As Needed, 86% Full Time, 11% Part Time, and 2% Contract. Highlights an 93% Physical, 3% Hybrid, and 4% Remote job distribution.

Site Reliability Engineer I

MasterCard

O Fallon, MO • On-site

$61 - $102/hr

Other

Medical, Dental, Vision, Life, Retirement, PTO

This job post has expired today. Applications are no longer accepted.


Job description

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 Site Reliability Engineer I Overview:
  • Are you a born problem solver who loves to figure out how something works?
  • Are you a CI/CD geek who loves all things automation?
  • Do you have a low tolerance for manual work and look to automate everything you can?

Business Operations is leading the DevOps transformation at Mastercard through our tooling and by being an advocate for change & standards throughout the development, quality, release, and product organizations. We need team members with an appetite for change and pushing the boundaries of what can be done with automation. Experience in working across development, operations, and product teams to prioritize needs and to build relationships is a must. The role of business operations is to be the production readiness steward for the platform. This is accomplished by closely partnering with developers to design, build, implement, and support technology services. A business operations engineer will ensure operational criteria like system availability, capacity, performance, monitoring, self-healing, and deployment automation are implemented throughout the delivery process. Business Operations plays a key role in leading the DevOps transformation at Mastercard through our tooling and by being an advocate for change and standards throughout the development, quality, release, and product organizations. We accomplish this transformation through supporting daily operations with a hyper focus on triage and then root cause by understanding the business impact of our products. The goal of every biz ops team is to shift left to be more proactive and upfront in the development process, and to proactively manage production and change activities to maximize customer experience, and increase the overall value of supported applications. Biz Ops teams also focus on risk management by tying all our activities together with an overarching responsibility for compliance and risk mitigation across all our environments. A biz ops focus is also on streamlining and standardizing traditional application specific support activities and centralizing points of interaction for both internal and external partners by communicating effectively with all key stakeholders. Ultimately, the role of biz ops is to align Product and Customer Focused priorities with Operational needs. We regularly review our run state not only from an internal perspective, but also understanding and providing the feedback loop to our development partners on how we can improve the customer experience of our applications.

All About You
  • Engage in and improve the whole lifecycle of services—from inception and design, through deployment, operation and refinement.
  • Analyze ITSM activities of the platform and provide feedback loop to development teams on operational gaps or resiliency concerns
  • Support services before they go live through activities such as system design consulting, capacity planning and launch reviews.
  • Maintain services once they are live by measuring and monitoring availability, latency and overall system health.
  • Scale systems sustainably through mechanisms like automation, and evolve systems by pushing for changes that improve reliability and velocity.
  • 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 postmortems.
  • 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

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.

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: $61,000 - $102,000 USD

Everyone wants easier ways to pay; we invent them. Checkout lines are slow; we speed them along. Merchants want more sales; we give them data and insights. People need financial access; we connect them. Corporate purchasing is complicated; we make it simple. Commuters are busy; we speed them on their way. Governments need greater efficiencies; we help create them. Small businesses are virtual; we give them access to a world of buyers. Retailers want to fight fraud; we provide the tools.

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