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Lead Software Engineer

Job in O'Fallon, St. Charles County, Missouri, 63366, USA
Listing for: MasterCard
Full Time position
Listed on 2026-04-25
Job specializations:
  • Software Development
    Software Engineer
Job Description & How to Apply Below
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

Lead Software Engineer

Overview

Be part of the Artificial Intelligence & Decision Processing Engineering team developing new capabilities for Master Card's Decision Management Platform, which serves as the core for multiple business solutions to combat fraud and validate cardholder identity. Our patented Java-based platform processes billions of transactions per month in tens of milliseconds using a multi-tiered, message-oriented approach for high performance and availability.

* Would you like to develop industry leading solutions for fighting fraud?

* Are you motivated by speeding business solutions to market?

* Do you want to innovate, using cutting edge technologies on challenging business problems?

Role

* Successfully lead major projects and complex assignments with broad scope and long-term business implications.

* Work closely with other technical leads on assigned projects to assist in design and implementation tasks.

* Assist with production support issues by acting as a subject matter expert in resolving incidents and problem tickets.

* Plan, design and develop technical solutions and alternatives to meet business requirements in adherence with Master Card standards, processes, and best practices.

* Participate in PoCs (Proof of Concept) and help the Department with selection of Vendor Solutions, Technologies, Methodologies and Frameworks.

* Design and build technical roadmaps to optimize services and functions with a focus on performance and cost/benefit optimization

* Conduct brownbag sessions on new and upcoming technologies, methodologies, and application appropriate frameworks.

* Actively look for opportunities to enhance standards and improve process efficiency.

* Be an integral part of the Agile SAFe discover and elaboration sessions. Perform requirements and design reviews, peer code reviews and PCI security reviews to ensure compliance with Master Card standards.

* Have strong ownership of your team's software and are deep in the maintenance characteristics, runtime properties and dependencies including hardware, operating system, and build.

* Communicate, collaborate, and work effectively in a global environment. Public speaking as a technology evangelist for Mastercard.

All About You

* Must be high-energy, detail-oriented, proactive and can function under pressure in an independent environment.

* Must provide the necessary skills to have a high degree of initiative and self-motivation to drive results.

* Possesses strong communication skills -- both verbal and written - and strong relationship, collaborative skills, and organizational skills.

* Willingness and ability to learn and take on challenging opportunities and to work as a member of matrix based diverse and geographically distributed project team.

* Knowledge of software development processes including agile processes and test-driven development

* Experience with the design and development of complex, multi-tier cloud native architectures.

* Degree in Computer Science or related field

Essential

Skills required:

* Technical experience using Java/J2EE

* Spring Framework (including Spring Boot)

* Distributed Computing at scale

* Cloud technologies like cloud foundry, Kubernetes

* Strong Linux and shell scripting

* Oracle & PL/SQL and advanced SQL scripting

* IDE such as JBoss Developer Studio/IntelliJ

Desirable

Skills:

* Experience working in at-scale distributed compute such as Gemfire, Apache Spark, Distributed Redis, Hazelcast, Grid Gain or similar

* Messaging - MQ and JMS

* Experience integrating vendor and open-source products into an overall system

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 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,…
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