Senior Information Security Engineer

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

Senior Information Security Engineer

Senior Information Security Engineer, Cryptographic Compliance & Risk Management Location: O'Fallon, MO

Position Overview Mastercard is seeking a highly motivated security professional to join the Cryptographic Compliance & Risk Management team. This role is responsible for strengthening Mastercard's enterprise cryptographic governance capabilities by assessing compliance with cryptographic and key management requirements, identifying risk, and driving remediation across technology platforms.

As cryptographic threats, regulatory expectations, and technology ecosystems continue to evolve, this position will help ensure that Mastercard's applications, infrastructure, cloud services, and operational environments comply with enterprise security standards and industry regulations. The ideal candidate combines technical security expertise with risk management and governance skills and can effectively influence stakeholders to achieve sustainable compliance outcomes.

Key Responsibilities

• Drive execution of Mastercard's Cryptographic Compliance strategy and roadmap.
• Assess applications, platforms, infrastructure, cloud environments, and services for adherence to cryptographic and key management standards.
• Identify cryptographic compliance gaps, control weaknesses, and security risks, and partner with stakeholders to develop remediation plans.
• Provide guidance on risk-based remediation approaches, compensating controls, and modernization strategies for legacy cryptographic implementations.
• Support enterprise-wide cryptographic assessments, reviews, audits, and reporting activities.
• Collaborate with engineering, architecture, product, infrastructure, and security teams to integrate cryptographic requirements into technology delivery processes.
• Define, document, and maintain repeatable governance processes, compliance validation activities, and control assessment methodologies.
• Analyze emerging regulatory, industry, and security requirements and translate them into actionable guidance.
• Develop metrics, dashboards, and reports that provide visibility into cryptographic compliance posture, risk exposure, and remediation progress.
• Support strategic initiatives including:

o Cryptographic inventory and discovery o Key management modernization o Cryptographic risk reduction programs o Post-Quantum Cryptography (PQC) readiness and migration planning

• Influence technology teams and business partners to prioritize remediation activities and achieve compliance objectives.

Required Qualifications

• Experience in Information Security, Security Risk Management, Governance, Risk and Compliance (GRC), or Security Engineering.
• Strong understanding of information security principles, risk management frameworks, and compliance practices.
• Knowledge of applied cryptography and key management concepts, including:

o Encryption o Hashing o Digital certificates o TLS/SSL o PKI o HSMs o PKCS#12

• Experience assessing security controls and driving remediation in complex enterprise environments.
• Familiarity with industry and regulatory standards, including:

o PCI DSS o FIPS o ISO 27001/27002 o NIST frameworks and guidance

• Ability to evaluate risk, prioritize remediation efforts, and influence technical and non-technical stakeholders.
• Strong analytical, problem-solving, verbal, and written communication skills.
• Ability to communicate complex security requirements in a clear, business-focused manner.

Preferred Qualifications

• Experience leading or supporting cryptographic inventory and discovery programs.
• Knowledge of Post-Quantum Cryptography (PQC) initiatives and migration planning.
• Cloud security experience across modern cloud platforms and services.
• Experience with PKI technologies and certificate lifecycle management.
• Experience supporting payment industry or retail HSM environments.
• Security metrics, reporting, and risk analytics experience.
• Familiarity with modern application architectures and software delivery pipelines.

Core Competencies

• Cryptographic Compliance
• Key Management Governance
• Security Risk Assessment
• Security Controls Validation
• Regulatory Compliance
• Security Engineering
• Risk Remediation Management
• Stakeholder Engagement and Influence
• Security Reporting and Analytics
• Enterprise Governance

Relevant Experience Candidates with experience in one or more of the following areas are encouraged to apply:

• Security Governance, Risk, and Compliance (GRC)
• Security Engineering
• Security Consulting
• Technology Risk Management
• Cryptographic Compliance Programs
• Key Management Programs
• Application Security
• Infrastructure Security
• Cloud Security

Keywords Cryptography, Key Management, TLS, PKI, HSM, PKCS#12, Compliance, Governance, Risk Assessment, Control Validation, Security Standards, PCI DSS, FIPS, ISO, NIST, PQC, Post Quantum Cryptography, Cryptographic Inventory, Security Engineering, Remediation, Risk Management.

Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact reasonable_accommodation@mastercard.com and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.

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.

In line with Mastercard’s total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.

Pay Ranges

O'Fallon, Missouri: $115,000 - $184,000 USD