Mastercard

Technology

SeniorSiteReliabilityEngineer

$96–163k O'Fallon, Missouri, United States FULL TIME
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Senior Site Reliability Engineer at Mastercard. Skills: Site Reliability Engineering, DevOps, Automation, Observability, Incident Management, Capacity Planning, CI/CD. Support daily operations. Incident triage”

What You'll Achieve.

ensuring platform stability, reliability, and health; ensuring the reliability, scalability, and performance of applications

Industry & Context.

Technology
Problems you'll solve

analytical and problem-solving skills

Eligibility Requirements

Participate in on-call rotations

What They're Looking For.

Must Have

Ability to read, write, and understand code in at least one programming language, understanding of DevOps principles and configuration management, Experience designing and operating large-scale distributed systems, analytical and problem-solving skills, Excellent communication skills and ownership mindset, Passion for observability, automation, and continuous improvement, Ability to collaborate across geographically distributed and matrixed teams

Nice to Have

Hands-on experience with Kubernetes, Docker, and container registries, Public cloud architecture experience (AWS, Azure, GCP), Blue/green deployment strategies, DevSecOps expertise and modern CI/CD practices, Azure certifications (AZ-203, AZ-400) preferred, Security fundamentals including: TLS/SSL, Certificate lifecycle management, Encryption methods (symmetric/asymmetric)

What You'll Do.

Support daily operations

Business impact assessment

Blameless post-mortems

Engage early in the development lifecycle

Proactively manage production readiness

Optimize production changes

Enhance customer experience

Drive risk management

and resiliency across environments

Align product and customer priorities with operational requirements

Own overall application health

Support services pre-launch

Design and operate highly reliable and scalable systems

Perform root cause analysis and collaborate with development teams on remediation

Participate in on-call rotations and incident response

Implement sustainable incident management and blameless post-mortems

Define and improve Service Level Objectives (SLOs)

Automate data-driven alerting to proactively identify issues

Improve the full service lifecycle—from design to production and optimization

Support CI/CD pipelines with validation and operational gating

Lead DevOps automation and best practices

Reduce operational toil through increased automation and tooling

Optimize capacity planning and performance

Analyze ITSM activities and identify operational gaps

Provide continuous feedback to development teams on resiliency improvements

How You'll Work.

Team & Collaboration

fostering developer run ownership; Enable teams to build resilient, fault-tolerant, and scalable products; Support developers during application build phases; holistic view of systems; enforce operational standards; facilitating an agile, learning-focused culture; collaborate with development teams on remediation; Partner with product and development teams; Ability to collaborate across geographically distributed and matrixed teams

Communication Scope

Excellent communication skills

Process & Methodology

Align product and customer priorities with operational requirements through continuous feedback throughout the application lifecycle

Full 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** ### Senior Site Reliability Engineer ### Biz Ops Engineer / Site Reliability Engineer (SRE) Who Is Mastercard? At Mastercard Technology, we work to connect and power an inclusive, digital economy that benefits everyone, everywhere—by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships, and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our Decency Quotient (DQ) drives our culture and everything we do inside and outside of our company. We cultivate an inclusive workplace that respects individual strengths, perspectives, and experiences. We believe our differences make us stronger—enabling better decisions, greater innovation, and stronger business results. ________________________________________ Technology at Mastercard What we create today will define tomorrow. We develop revolutionary technologies that reshape the digital economy to be more connected, inclusive, safe, fast, and sustainable. Working at Mastercard means being part of a unique culture—collaborative, diverse, and globally connected. Our employees are empowered to shape careers across disciplines and continents while working alongside experts and leaders at every level of the business to improve what exists and invent what’s next. ________________________________________ About the Role The Business Operations (Biz Ops) Team is seeki

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