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MasterCard Engineer, Software Engineering in O'Fallon, Missouri

Who is Mastercard?

We are the global technology company behind the world’s fastest payments processing network. We are a vehicle for commerce, a connection to financial systems for the previously excluded, a technology innovation lab, and the home of Priceless at ®. We ensure every employee has the opportunity to be a part of something bigger and to change lives. We believe as our company grows, so should you. We believe in connecting everyone to endless, priceless possibilities.

Job Title

Engineer, Software Engineering

Providing Innovative, Secure, and Reliable Switching Solutions is the lifeblood of Mastercard Core Products, we are currently seeking a passionate, collaborative, and experienced software engineer to join Crypto-Services Squad.

Are you a collaborator capable of communicating effectively with Business and IT stakeholders across all organizational levels?

Are you an innovator who embraces, adopts, and studies the latest technology to solve challenging business problems?

If this describes you, Mastercard wants to talk to you about the creation of our new agile Cryptographic-Services Squad. Our fully autonomous, cross functional team supports value added switching security services (e.g. Authentication and Validation) around the globe in order to improve the consumer experience.

About the Role:


  • Ensure quality of one or more application codebases and alignment with development standards.

  • Provides input into design of automation for full infrastructure deployment; manages review of and tests for compatibility and integration processes needed to connect with other devices

  • Automates large scale systems spanning multiple locations and environments.

  • Writes code automating public cloud, private cloud, and bare metal.

  • Automates common tasks, deploy with an IaaS model, utilizing chef, ansible, or similar

  • Ability to write moderately complex scripts and programs for automation, tools, frameworks,

dashboards, alarms. (common uses: Python, Perl, PHP, JavaScript, Go).

  • Orchestrates the deployment/maintenance of complex applications.

  • Responsible for performance engineering of the enterprise software architecture.

  • Significant code development, commitment of code/review of pull-requests, and modest day-to-day

support duties.

About You:


  • Engineering experience, preferably in high volume, low latency transaction processing systems (such as payments

transaction switching, high frequency trading systems or global real-time event streaming systems etc.)

  • Experience in CI/CD pipeline creation via Jenkins.

  • Delivered scalable products through a CI/CD pipeline deploying on-prem or in a public cloud infrastructure.

  • Ensure quality across the full stack via rigorous CI/CD practices in all aspects of the SDLC (Builds, Test, and


  • Strong writing and verbal communication skills

Preferred Skills:


  • Extensive knowledge and experience with C

  • Experienced in event driven systems (Apache Kafka, NATS, etc)

  • Experience in financial system encryption (PIN Blocks, CHIP, CVC) would be beneficial

-Experience with testing frameworks and methodologies (Gtest, JUnit, mocking, etc.)

  • Experienced in building platforms with Microservice architecture and RESTful APIs.

  • Experience using cloud-native approaches running on Linux, leveraging Spring Boot

  • Exposure to symmetric cryptography would be desired. Experience with HSM’s (Thales, AEP) is desired

  • Experience with virtualization like Cloud Foundry (PCF), Kubernetes (PKS), Docker etc.

  • Experience with deployment via Concourse CI.

  • Experience with various coding languages Java, Go, C++,ESQL, etc.


BS or MS in Computer Science

Mastercard is an inclusive Equal Employment 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.​

If you require accommodations or assistance to complete the online application process, please contact 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.

Everyone wants easier ways to pay;

we invent them.

Checkout lines are slow;

we speed them along.

Merchants want more sales;

we give them data and insights.

People need financial access;

we connect them.

Corporate purchasing is complicated;

we make it simple.

Commuters are busy;

we speed them on their way.

Governments need greater efficiencies;

we help create them.

Small businesses are virtual;

we give them access to a world of buyers.

Retailers want to fight fraud;

we provide the tools.

Requisition ID: R-86439