Principal DevOps Engineer (Decision Management Platform)

Mastercard; Ireland; On-site; EUR 120,000 - 180,000; Full time

Job summary

Mastercard's Services Technology organization seeks a DevOps Principal Engineer for the Decision Management Program (DMP), a real-time decisioning platform powering fraud prevention, risk scoring, and identity verification across the global payments network.

You will design and operate high-volume, low-latency cloud and on-prem infrastructure, build and optimize CI/CD pipelines, contribute to IaC with Terraform and CloudFormation, and drive observability with Prometheus, Grafana, and Splunk.

Qualifications

• 8+ years in Software Engineering and DevOps roles.
• Experience leading technical teams and programs.
• Strong Linux systems administration background.
• Hands-on coding and automation experience required.
• Proficiency with AWS and cloud/infrastructure tooling.
• Deep knowledge of CI/CD pipelines and IaC practices.
• Familiar with monitoring/observability platforms and container orchestration.
• Proficiency in Bash, Python, and Java.

Responsibilities

• Architect, provision, and manage cloud and on-prem infra for high-volume systems.
• Design, implement, and optimize CI/CD pipelines for safe, fast delivery.
• Collaborate with R&D to design scalable, low-latency architectures.
• Champion Infrastructure as Code using Terraform and CloudFormation.
• Drive observability with Prometheus, Grafana, Druid, Splunk, Loki.
• Lead DevOps initiatives and mentor global engineering teams.
• Ensure uptime, deployment velocity, and cost efficiency across data centres.

Skills

CI/CD

AWS

Kubernetes

Docker

Terraform

CloudFormation

Monitoring

Observability

SRE

Scripting

Python

Java

Bash

Linux

GitHub Actions

Jenkins

XLR

Helm

Docker Compose

FinOps

Leadership

Tools

Terraform

CloudFormation

AWS

Kubernetes

Helm

Docker

Docker Compose

Prometheus

Grafana

Splunk

Druid

Loki

Job description

• Join Mastercard's Services Technology organization as a DevOps Principal Engineer for the Decision Management Program (DMP)-a patented, real-time decisioning platform that powers fraud prevention, risk scoring, and identity verification across the global payments network
• The platform processes billions of transactions each month, consistently delivering results in milliseconds to support mission critical business solutions
• In this role you will design systems to enable deployment and management of critical high-volume, low-latency financial systems into public and private cloud environments
• You will work with global engineering teams to drive DevOps initiatives across the platform utilizing a highly scalable architecture leveraging In-Memory data grids and real time processing technologies
• This is a unique opportunity to shape the future of Mastercard's decisioning ecosystem—advancing innovative, high-performance solutions and driving engineering and operational excellence across a critical real-time platform
• Architect, provision, and manage public and on-prem cloud infrastructure, including containerized and virtualized systems
• Design, build, and optimize CI/CD pipelines to enable fast, safe, and repeatable delivery of complex distributed systems across a global network of data centres
• Collaborate cross-functionally with R&D teams to design scalable systems, troubleshoot complex issues, and support new product initiatives
• Champion Infrastructure as Code principles using tools like Terraform and CloudFormation
• Drive observability and reliability through monitoring, logging, and alerting systems (Prometheus, Grafana, Druid, Splunk etc.)
• Foster innovation and continuous improvement, adopting new tools and practices to increase efficiency, scalability, and cost optimization
• Contribute to hands-on coding and automation efforts when needed — lead by example
• Partner with stakeholders to align DevOps initiatives with business objectives, including uptime, deployment velocity, and cost efficiency

Strong understanding of CI/CD pipelines (GitHub Actions, Jenkins, XLR etc.)Hands-on experience with infrastructure-as-code (Terraform, CloudFormation)Demonstrated ownership mindset, prioritization skills, and ability to thrive in a fast-paced, multi-tasking environmentDeep familiarity with AWS cloud environmentsExperience with monitoring and observability platforms (Prometheus, Grafana, Druid, Splunk, Loki)Proven experience with container orchestration and tooling (Kubernetes, Helm, Docker Compose)Proficient in scripting and programming (Bash, Python, Java)Experience with FinOps or cost optimization in cloud environmentsExcellent communication skills and the ability to work effectively with Developers, QE, Operations and support teams8+ years of experience in Software Engineering and DevOps roles, including at least 2 years in a technical leadership capacityStrong Linux systems administration background