Principal Security Engineer: Developer‑Focused Threat Modeling

MasterCard; Dublin; Hybrid; EUR 120,000 - 150,000; Full time

Job summary

Mastercard is seeking a Principal Security Engineer focused on developer enablement and threat modeling. You will lead efforts to make security practical and scalable for engineers, shaping how threat modeling is taught, adopted, reviewed, and governed across the development lifecycle.

You will collaborate with developers and architects to embed security into workflows, ensuring security adds value without hindering delivery, in a senior hands-on leadership capacity.

Qualifications

• Senior security practitioner with hands-on threat modeling and secure software design.
• Experience at scale and across multiple teams.
• Strong coaching, communication, and developer‑focused mindset.
• Ability to influence without formal authority.

Responsibilities

• Create scalable threat modeling collateral, blueprints, and templates.
• Evolve threat modeling methodologies for the engineering lifecycle.
• Establish review and governance practices for secure outcomes.
• Design learning programs to help engineers apply threat modeling daily.
• Partner with development teams to embed security into workflows.

Skills

Threat modeling

Secure software design

Developer enablement

Coaching

Cross-team collaboration

Job description

Mastercard is seeking a Principal Security Engineer focused on developer enablement and threat modeling. You will lead efforts to make security practical and scalable for engineers, shaping how threat modeling is taught, adopted, reviewed, and governed across the development lifecycle.

You will collaborate with developers and architects to embed security into workflows, ensuring security adds value without hindering delivery, in a senior hands-on leadership capacity.