Senior DevOps Architect – Real-Time Decision Platform

Mastercard; Clondalkin; On-site; EUR 140,000 - 170,000; Full time

Job summary

Mastercard is seeking a Principal DevOps Engineer for the Decision Management Platform, a high‑volume, real‑time fraud risk and identity verification system. You will design and operate scalable public and on‑prem infrastructure, drive CI/CD, and lead cross‑functional teams to deliver secure, low‑latency services globally.

Responsibilities include IaC with Terraform/CloudFormation, strong observability with Prometheus/Grafana, and collaboration with R&D to deploy new product initiatives.

Qualifications

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

Responsibilities

• 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 Terraform and CloudFormation.
• Drive observability and reliability through monitoring, logging, and alerting systems (Prometheus, Grafana, Druid, Splunk).
• 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.

Skills

Linux administration

AWS

Kubernetes

Terraform

CloudFormation

CI/CD

Bash scripting

Python

Java

Prometheus

Grafana

Splunk

Loki

Druid

Communication

Tools

Docker

Kubernetes

Helm

Terraform

CloudFormation

GitHub Actions

Jenkins

XLR

Prometheus

Grafana

Splunk

Loki

Job description

Mastercard is seeking a Principal DevOps Engineer for the Decision Management Platform, a high‑volume, real‑time fraud risk and identity verification system. You will design and operate scalable public and on‑prem infrastructure, drive CI/CD, and lead cross‑functional teams to deliver secure, low‑latency services globally.

Responsibilities include IaC with Terraform/CloudFormation, strong observability with Prometheus/Grafana, and collaboration with R&D to deploy new product initiatives.