Senior Blockchain Security Architect

Mastercard; Malahide; On-site; EUR 120,000 - 170,000; Full time

Job summary

Mastercard seeks a Principal Information Security Engineer to lead security for Crypto Products and Solutions Blockchain Networks, shaping architecture, threat modelling and security-by-design in high-availability payment ecosystems.

You will partner with engineering, product, and business teams to ensure compliance and customer trust, mentor junior engineers, and influence security strategy across global programs.

Qualifications

• Undergraduate degree in computer science or information security.
• 10–15 years in information security with leadership experience.
• Strong knowledge of blockchain security principles and crypto concepts.
• CISSP/CISM or equivalent certifications are an advantage.

Responsibilities

• Define platform security architecture and drive long-term security strategy for Crypto Blockchain Networks.
• Lead threat modelling, risk assessments, and security design reviews for high-velocity systems.
• Mentor junior engineers and security practitioners across global teams.
• Collaborate with engineering and product to embed security into CI/CD pipelines and APIs.

Skills

Security leadership

Security architecture

Threat modelling

Cross-functional collaboration

Communication

Risk assessment

Education

Undergraduate degree in CS or information security

CISSP/CISM certification

Tools

SOC 2

PCI DSS

DORA

CRI

Job description

Mastercard seeks a Principal Information Security Engineer to lead security for Crypto Products and Solutions Blockchain Networks, shaping architecture, threat modelling and security-by-design in high-availability payment ecosystems.

You will partner with engineering, product, and business teams to ensure compliance and customer trust, mentor junior engineers, and influence security strategy across global programs.