Software Engineer II

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
Software Engineer II
Who is Mastercard?
Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.
Team Overview: Infrastructure Design Engineering Automation (IDEA)
The IDEA team is focused on transforming Mastercard's infrastructure delivery by automating legacy processes and integrating with Mastercard APIs. Our flagship platform, RAA (Reference Architecture Automation), enables scalable, secure, and efficient infrastructure provisioning with minimal manual intervention.
Role Summary
As a Software Engineer II, you'll contribute to the development and enhancement of automation tools and services that support Mastercard's infrastructure modernization efforts. You'll work closely with senior engineers and cross-functional teams to build reliable, secure, and performant software solutions.
Responsibilities
Collaborate with product and engineering teams to understand requirements and deliver features that support infrastructure automation.
Design, develop, test, and deploy full-stack applications using Mastercard's standard tools and frameworks.
Contribute to the automation of build, operate, and run aspects of infrastructure software.
Participate in code reviews and apply secure coding practices.
Troubleshoot and debug issues across services and environments.
Document technical designs, decisions, and processes.
Continuously learn and apply new technologies and patterns relevant to Mastercard's infrastructure goals.
Required Skills
Aptitude for learning new languages/frameworks.
Proficiency in one or more programming languages: Python, Go, JavaScript, Typescript.
Experience with React.js or similar frontend frameworks.
Familiarity with secure coding standards (e.g., OWASP, CWE).
Understanding of software engineering principles including testing, operability, and service-oriented architecture.
Experience with Git-based workflows (e.g., Gitflow), CI/CD pipelines (e.g., Jenkins), and code quality tools (e.g., SonarQube).
Ability to write unit, integration, and regression tests.
Exposure to API development and consumption using standardized patterns.
Preferred Qualifications
2-4 years of professional software development experience.
Experience with infrastructure automation or DevOps practices.
Familiarity with Mastercard's internal tools such as RAA, Bitbucket, Blazemeter, and VMware.
Understanding of performance, security, and regulatory requirements in enterprise environments.
Corporate Security Responsibility
Every person working for, or on behalf of, Mastercard is responsible for information security. This includes:
Abiding by Mastercard's security policies and practices.
Ensuring the confidentiality and integrity of accessed information.
Reporting any suspected security violations.
Completing mandatory security training as required.
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 [email protected] 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: $92,000 - $147,000 USD