Principal DevOps Engineer (Decision Management Platform)

Mastercard; Ireland; On-site; EUR 80,000 - 100,000; Full time

Benefits offered by this job

Gym membership

Pension plan

Share purchase options

Extra holiday purchase

25 days holiday

Work from home opportunities

Health insurance

Job summary

Mastercard is seeking a DevOps Principal Engineer to join their Services Technology organization. This role involves designing systems for managing critical services and architectures in both public and private cloud environments.

The ideal candidate should have a strong software engineering background, with proficiency in scripting, container orchestration, and deep familiarity with AWS. Benefits include health insurance, gym membership, and work-from-home opportunities.

Qualifications

• 8+ years of experience in Software Engineering and DevOps roles.
• Proven experience with container orchestration.
• Strong understanding of CI/CD pipelines.

Responsibilities

• Design systems for deployment and management of financial systems.
• Architect and manage cloud infrastructure.
• Drive observability and reliability through monitoring systems.

Skills

Scripting (Bash, Python, Java)

Container orchestration (Kubernetes, Helm, Docker Compose)

CI/CD pipelines (GitHub Actions, Jenkins, XLR)

Linux systems administration

AWS cloud environments

Monitoring and observability platforms (Prometheus, Grafana, Splunk)

Tools

Terraform

CloudFormation

Job description

Responsibilities

• 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

Benefits

• Gym membership
• Pension plan
• Share purchase options
• Extra holiday purchase optional
• 25 days holiday(excl. bank holidays)
• Work from home opportunities
• Health insurance

Qualifications

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