Find Principal security engineer Jobs in Ireland

Principal Security Engineer
Mastercard —Dublin, County Dublin
- Full-time
- Continuous improvement
- Leadership
- Communication skills
Principal Engineer
Primark —Dublin, County Dublin
- Software development
- Agile
- Communication skills
Principal Engineer Product Applications
Analog Devices —Limerick, County Limerick
- Full-time
Principal Site Reliability Engineer
FIS Global —Dublin, County Dublin
- Full-time
- Azure
- AWS
- Bachelor's degree
Senior/Principal System Safety Engineer - Rail
WSP —Dublin, County Dublin
- Part-time
- Hybrid work
- Work from home
- Gym membership
Principal Software Engineer, Amazon DynamoDB
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- AWS
- Software development
- SDLC
Principal Software Engineer, AWS Lambda Experience
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- Computer Science
- AWS
- C++
6d
Principal Cybersecurity Architect / Cybersecurity Strategist
McKesson —Cork, County Cork
- €101,300–€168,800 a year
- Full-time
- Communication skills
- Wellness program
- Employee stock purchase plan
Principal ML Engineer
Solventum —Dublin, County Dublin
- Full-time
- Azure
- Doctoral degree
- Computer Science
Azure Cloud Engineer - 12 month contract
DAA —Dublin, County Dublin
- Full-time
- Azure
- DevOps
- Scripting
Principal Software Engineer
Red Hat, Inc. —Waterford, County Waterford
- Full-time
- Remote
- Computer Science
- Master's degree
- AWS
1d
Principal BMS Engineer - Dublin
Tractebel —DUBLIN 2, County Dublin
- Full-time
- Hybrid work
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
- Annual leave
10d
Principal RF Design Engineer
Analog Devices —Limerick, County Limerick
- Full-time
- Doctoral degree
- Master's degree
- Mentoring
Field Services Engineer
BoyleSports —Dundalk, County Louth
- Full-time
- Hybrid work
- Software troubleshooting
- Customer service
- Windows
Quick apply
Principal Software Engineer - MLOps
Liberty Information Technology —Galway, County Galway
- Hybrid work
- AWS
- IT
- SDLC
- Employee discount
Principal Software Engineer - MLOps
Liberty IT —Galway, County Galway
- Hybrid work
- AWS
- IT
- SDLC
- Employee discount
Principal Engineer, Cloud Engineering
iCIMS Talent Acquisition —DUBLIN 2, County Dublin
- Full-time
- Azure
- AWS
- Scripting
- Annual leave
- Life insurance
7d
Principal AI Engineer
OpenText —Cork, County Cork
- Azure
- Computer Science
- DevOps
Principal AI Engineer
Mastercard —Dublin, County Dublin
- Full-time
- Azure
- System design
- Research
Principal Test Development Engineer
Analog Devices —Limerick, County Limerick
- Full-time
- Analysis skills
- Leadership
- Communication skills

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Principal Security Engineer

Mastercard -
Dublin, County Dublin

Apply Now

Job details

Full-time

Qualifications

Continuous improvement
Leadership
Communication skills

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

Principal Security Engineer

Overview
The Principal Security Engineer serves as a trusted advisor and partner to developers, providing hands‑on support, coaching, and real‑time guidance to integrate security seamlessly into the development lifecycle. This role plays a critical part in shaping how security and threat modeling is taught, adopted, reviewed, and governed across Mastercard’s development lifecycle. The focus is on making security accessible, actionable, and aligned with how developers actually build software, driving adoption through collaboration, continuous feedback, and a strong developer experience.

Role
This is a senior, hands‑on security leadership role focused first and foremost on developer enablement and engagement, responsible for driving security excellence at scale across Mastercard. The Principal Security Engineer blends deep individual‑contributor expertise with practice‑building leadership, including:
Creating scalable, developer‑friendly threat modeling collateral such as blueprints, threat libraries, and templates
Implementing and evolving threat modeling methodologies
Establishing review and governance practices that support consistent, high‑quality outcomes
Designing and delivering formal learning and enablement programs that help engineers and architects confidently apply threat modeling in their day‑to‑day work
The role partners closely with development teams to embed security naturally into workflows, ensuring security enhances—not hinders—delivery.

About You
You are a senior security practitioner with deep, hands‑on experience in threat modeling and secure software design. You are comfortable operating at scale, influencing across teams, and working directly with developers and architects. You combine technical depth with strong coaching and communication skills, and you are passionate about building practical, developer‑centric security practices. You thrive in environments where collaboration, continuous improvement, and strong developer experience are key to success.

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.

Apply Now

Refine Your Search

principal security engineer jobs in ireland

Principal Security Engineer

Principal Engineer

Principal Engineer Product Applications

Principal Site Reliability Engineer

Senior/Principal System Safety Engineer - Rail

Principal Software Engineer, Amazon DynamoDB

Principal Software Engineer, AWS Lambda Experience

Principal Cybersecurity Architect / Cybersecurity Strategist

Principal ML Engineer

Azure Cloud Engineer - 12 month contract

Principal Software Engineer

Principal BMS Engineer - Dublin

Principal RF Design Engineer

Field Services Engineer

Principal Software Engineer - MLOps

Principal Software Engineer - MLOps

Principal Engineer, Cloud Engineering

Principal AI Engineer

Principal AI Engineer

Principal Test Development Engineer

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