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Senior Information Security Engineer

Mastercard
Fallon, MO Full Time
POSTED ON 9/25/2025
AVAILABLE BEFORE 11/25/2025

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

Overview

Mastercard is seeking candidates to join our Security Engineering team in St Louis.

Mastercard is developing the next generation of applications and services to enable consumers and businesses to securely, efficiently, and intelligently conduct payment transactions and related services.

Whether through traditional retail, mobile, or e-commerce, Mastercard innovation is leading the digital convergence of traditional and emerging payments technologies across a wide variety of new devices and services.

  • Can you demonstrate a high level of expertise in information security and secure development disciplines?
  • Can you provide detailed guidance on the securely implement systems in public cloud environments?
  • Can you advise development teams on how to securely design applications and services following industry best practices and enhance existing approaches to security engineering?
  • Have you performed security analysis of mobile applications, web applications and web services and understand the threats, attacks and risks to payment applications?
  • Can you analyze an application architecture to reduce the security risk to an acceptable level, while still providing beneficial functionality for the end user?

Role

  • Provide technical design and architecture advice to internal teams on how to securely develop and build applications and supporting systems
  • Define secure mechanisms for critical business functions in cloud environments
  • Work closely with developers and evaluate business requests and proposed designs to determine feasibility; work with software development teams to define alternatives and recommend optimal solutions to meet security and regulatory requirements in the design of new and enhanced systems
  • Leverage security experience and knowledge within the mobile and digital commerce arena to cultivate and maintain effective working relationships with a variety of internal MasterCard stakeholders, including business owners, end-users, customers, project managers, engineers, and senior management
  • Define security requirements and guidelines to ensure repeatable processes are followed by worldwide teams
  • Assist in the strategy, standards, and architecture for the security aspects of the SDLC including application, mobile, web service, DevOps, cloud, and CICD efforts

All About You

  • Strong understanding of information security, risk and data privacy within the domain of digital commerce including relevant practical experience
  • Demonstrate a broad awareness of security engineering concepts and practices across all phases of the software development lifecycle
  • Experience providing security architecture advice for web based network environments and secure communication, including mobile applications, web applications and web services
  • Knowledge and technical security experience in cryptography, including several of the following encryption, hashing, key management, digital certificates, TLS
  • Knowledge of virtualization platforms such as Amazon Web Services (AWS) EC2, ECS, VMware vCloud Director, VMware vSphere and Google AppEngine, OpenStack or Azure
  • Experience of continuous delivery, continuous integration processes and procedures including critical security considerations in automated workflows
  • Technical experience with Java or similar enterprise programming language, especially related to secure coding best practices
  • Demonstrated experience designing secure multi-domain Internet-facing applications
  • Demonstrate technical competency in security engineering based on hands-on experience or relevant qualifications
  • Working knowledge and technical security experience with UNIX, Linux, Solaris, or AIX
  • Demonstrate the ability to articulate and communicate effectively to diverse audiences and properly translates security and risk management terminology into business terms, and recommends alternative solutions to these stakeholders.
  • Strong verbal and written communication skills

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.

Pay Ranges

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

Salary : $115,000 - $184,000

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