Principal Security Engineer: Developer-First Leader

Mastercard; Leixlip; On-site; EUR 120,000 - 160,000; Full time

Job summary

Mastercard is seeking a Principal Security Engineer to serve as a trusted advisor to developers, embedding security into the software lifecycle and shaping threat modeling practices across the organization. You will lead scalable, developer-focused security enablement, deliver formal learning programs, and establish governance that ensures high-quality security outcomes across engineering teams.

This senior role combines deep technical practice with leadership to accelerate secure delivery at

Qualifications

• Senior security practitioner with hands-on threat modeling experience.
• Experience at scale and influencing across teams.
• Strong coaching and communication skills.
• Passionate about developer-centric security practices.

Responsibilities

• Create scalable threat modeling collateral such as blueprints, threat libraries, and templates.
• Implement threat modeling methodologies.
• Establish review and governance practices for consistent, high-quality outcomes.
• Design and deliver formal learning and enablement programs for engineers and architects.

Skills

Threat modeling

Secure design

Developer enablement

Coaching

Job description

Mastercard is seeking a Principal Security Engineer to serve as a trusted advisor to developers, embedding security into the software lifecycle and shaping threat modeling practices across the organization. You will lead scalable, developer-focused security enablement, deliver formal learning programs, and establish governance that ensures high-quality security outcomes across engineering teams.

This senior role combines deep technical practice with leadership to accelerate secure delivery at