Find Principal security engineer Jobs in County Dublin

Principal Security Engineer
Mastercard —Dublin, County Dublin
- Full-time
- Continuous improvement
- Leadership
- Communication skills
Principal AI Engineer
Mastercard —Dublin, County Dublin
- Full-time
- Azure
- System design
- Research
Principal BMS Engineer - Dublin
Tractebel —DUBLIN 2, County Dublin
- Full-time
- Hybrid work
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
- Annual leave
Application Security Engineer
Millennium Management —Dublin, County Dublin
- Azure
- Computer Science
- Java
Senior/Principal System Safety Engineer - Rail
WSP —Dublin, County Dublin
- Part-time
- Hybrid work
- Work from home
- Gym membership
Principal Software Engineer - Architecture
Mastercard —Dublin, County Dublin
- Full-time
- Java
- Software development
- Leadership
Principal ML Engineer
Solventum —Dublin, County Dublin
- Full-time
- Azure
- Doctoral degree
- Computer Science
Principal Engineer, Cloud Engineering
iCIMS Talent Acquisition —DUBLIN 2, County Dublin
- Full-time
- Azure
- AWS
- Scripting
- Annual leave
- Life insurance
Principal Software Engineer
Mastercard —Dublin, County Dublin
- Full-time
- Azure
- Java
- AWS
Staff Security Software Engineer
eBay Inc. —Dublin, County Dublin
- Full-time
- Azure
- System design
- SQL
Principal Engineer, Cloud Engineering
iCims —DUBLIN 2, County Dublin
- Full-time
- Azure
- AWS
- Scripting
- Annual leave
- Life insurance
Privileged Access Management Engineer
American International Group UK Limited, Ireland Branch & AIG Europe S.A. (Ireland Branch) —DUBLIN 1, County Dublin
- Full-time
- Azure
- Oracle
- Windows
Quick apply
12d
Principal Civil Engineer – HV Substations
AtkinsRéalis —Dublin, County Dublin
- Full-time
- Hybrid work
- Microsoft Powerpoint
- Microsoft Office
- Communication skills
12d
Principal BMS Engineer - Dublin
ENGIE —DUBLIN 2, County Dublin
- Hybrid work
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
- Annual leave
10d
Principal OT Cybersecurity Consultant
Jacobs —Dublin, County Dublin
- Hybrid work
- IT
- Communication skills
Principal Engineer, Full Stack
Storyful —Dublin, County Dublin
- Full-time
- AWS
- Python
Principal Engineer, Component Engineering
Analog Devices —Glasnevin, County Dublin
- Full-time
- Doctoral degree
- Master's degree
- Electrical Engineering
8d
Staff Engineer
Solance —Dublin, County Dublin
- Full-time
- Hybrid work
- System design
- Java
- AWS
Quick apply
Principle Android Engineer
Elwood Roberts —Dublin, County Dublin
- €60,000–€70,000 a month
- Full-time
- System design
- English
- AWS
Quick apply
Principal Architect (Remote – Ireland)
Hadfield Green —DUBLIN 2, County Dublin
- Remote
- System design
- Java
- Leadership

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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 county dublin

Principal Security Engineer

Principal AI Engineer

Principal BMS Engineer - Dublin

Application Security Engineer

Senior/Principal System Safety Engineer - Rail

Principal Software Engineer - Architecture

Principal ML Engineer

Principal Engineer, Cloud Engineering

Principal Software Engineer

Staff Security Software Engineer

Principal Engineer, Cloud Engineering

Privileged Access Management Engineer

Principal Civil Engineer – HV Substations

Principal BMS Engineer - Dublin

Principal OT Cybersecurity Consultant

Principal Engineer, Full Stack

Principal Engineer, Component Engineering

Staff Engineer

Principle Android Engineer

Principal Architect (Remote – Ireland)

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