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Mastercard

Lead Software Engineer

Mastercard

Published 06 Mar 2026
O'Fallon, MO, USA
140K - 231K USD Annual
Part Time
Full Time

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Role Highlights

Languages used

Java
Python

Key skills

Prompt Engineering
Integrations
API
Design Patterns
Operating Systems
Information Security
AI
Streaming
Operations
Architecture
Prioritization
Debugging
TroubleShooting
Logging
MVC
Infrastructure
Database
Storage
Deployment
CI
CD
Automation

Tools, Libraries and Frameworks

Spring Boot
OWASP
Linux
Jenkins
AWS
Azure
Angular

Description

\\\\Our Purpose\\\\ \Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were 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 The AI & DPE team enables intelligent decision-based products through real time and near real time streaming analytics with the ability to govern these decisions and manage their outcomes with business agility at global scale to support Cyber Intelligence and prevent Fraud. The Decision Operations team manages and maintains the components that are critical to the DMP platform and its globally distributed architecture. We are looking for a Lead Software Development Engineer to join us on this amazing journey as we succeed on many tremendous opportunities ahead. Responsibilities Own complex problems having dependency across services and facilitate cross-functional team interactions to drive resolution Write code to build and enhance applications/services and promote code-reviews, code scanning, and other standard development practices to deliver high-quality artifacts to production. Define, design, and develop procedures and solutions at a service level to meet the business requirements/enhancements Drive prioritization decisions and trade-offs in working with product partners Identify opportunities and build roadmaps to enhance primary service/function Automate and simplify all aspects of software delivery and development actively evangelizing the need to automate and simplify where needed. Drive seamless integration across all connected services to meet end-user expectations Drive blameless postmortems culture to identify root causes of incidents and implement learnings Introduce new technologies and architecture by following enterprise guidelines Advocate for engineering principles outside of current organization/platform Provide development and architecture guidance to team members Build relationships and effective partnerships across organizations Write and evaluate recommendations for job promotions based on an unbiased view of one's accomplishments Conduct technical interviews for hiring engineering staff and raising the performance bar Lead by example with hands-on approaches to demonstrate engineering excellence Encourage staff to share and seek knowledge within their Guild/Program to drive reuse of patterns/libraries/practices and enhance productivity Experiences Has the ability to write secure code in three or more languages (e.g., Java, Python, GO,JavaScript) and familiar with secure coding standards (e.g., OWASP, CWE, SEI CERT) and vulnerabilities Has skills in building applications using open frameworks to achieve reuse and reduce development times (e.g., Spring Boot, Steeltoe, Angular, DXP, others) Understands internals of operating systems (Windows, Linux) to write interoperable and performant code Able to perform debugging and troubleshooting to analyze core, heap, thread dumps and remove coding errors Has skills to document and coach team on the development practices and coding guidelines (e.g., branching, peer reviews, library use, logging, scanning rules, test-driven development, error handling) Understands use cases for advanced design patterns (e.g., service-to-worker, MVC, API gateway, intercepting filter, dependency injection, lazy loading, all from the gang of four) to implement efficient code Has skills to undertake a technical review of code across applications and their dependencies to look for anti-patterns and promote continuous refactoring Understands and elaborates technical debt and operational issues to drive prioritization discussions with stakeholders to improve the run experience Understands system architecture to plan for platform and infrastructure capacity (e.g., database, compute, network, storage) and drives the dependency prioritization to reduce the delivery lead time Has skills to understand customer journeys and ensure a Mastercard good experience by continuously reducing Mean time to mitigate (MTTM) for incidents and ensuring high availability (99.95% as a starting point) Has skills to simplify deployment and eliminate software and infrastructure snowflakes using standardized platforms, ephemeral instances, and automation Has skills to orchestrate release workflows and pipelines and apply standardized pipelines via APIs to achieve CI and CD using industry-standard tools (e.g., Jenkins, Bamboo, AWS/Azure pipelines, XL Release, others) Able to configure rules and build automation for code with vulnerability scanning and software composition analysis using standard tools (e.g., Sonar, Checkmarx, Nexus, JFrog XRay, Veracode, others) Has skills to define, organize, and report on test runs for major, minor, and hotfix releases (including unit, component level, system level, customer journeys, past customer issues, and regulatory controls) Has skills to conduct various performance tests (e.g., load, spike, breakpoint, endurance) to Understands application/service limits and behaviors 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, Mastercard is responsible for information security and must: \\+ Abide by Mastercards 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 Mastercards guidelines. In line with Mastercards 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: $140,000 - $231,000 USD

Required Qualifications and Skills

The role requires the ability to write secure code in at least three languages such as Java, Python, GO, or JavaScript, and familiarity with secure coding standards and vulnerabilities. Experience in building applications using open frameworks like Spring Boot, Steeltoe, or Angular is necessary to achieve reuse and reduce development times. Understanding operating system internals for writing interoperable and performant code, along with debugging and troubleshooting skills, is essential. The candidate should also possess skills in documenting and coaching teams on development practices and coding guidelines, and an understanding of advanced design patterns for efficient code implementation. Experience in technical code reviews, managing technical debt, and understanding system architecture for capacity planning is also required.

Disclaimer

Disclaimer: Job and company description information and some of the data fields may have been generated via GPT-4 summarisation and could contain inaccuracies. The full external job listing link should always be relied on for authoritative information.

About the company

Mastercard

Size

38185

HQ

Purchase, US

Description

MasterCard is framed as a technology company in the global payments business, emphasizing its role in connecting various stakeholders worldwide and enabling the use of secure and convenient electronic forms of payment. It describes its mission as working to connect and power an inclusive digital economy that benefits everyone everywhere by ensuring transactions are safe, simple, smart, and accessible. The company culture is driven by a decency quotient (DQ), cultivating an inclusive environment that values individual strengths, views, and experiences. It leverages secure data, networks, partnerships, and a passion for innovation to support various entities, including individuals, financial institutions, governments, and businesses, in realizing their potential.

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