MastercardSoftware Engineer I
Mastercard is hiring a Software Engineer I. Level rates it ; you can apply on Level.
AI in this role
Develop, test, and maintain global software applications and services supporting real-time payment networks at Mastercard.
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 IAbout the RoleJoin Mastercard’s Transaction Stream team in O’Fallon, Missouri, and help build the applications and services that power critical capabilities across the real-time payment network. This is an opportunity to work on software that operates on a global scale, where speed, reliability, and resilience matter every day. As a Software Engineer I, you will collaborate with engineers and product partners to build, test, and enhance solutions that support the movement of transactions around the world.
Role and Responsibilities
Develop, test, maintain, and support software applications and services with guidance from experienced engineers
Write clean, maintainable, reusable, and secure code following established engineering standards, software design principles, and best practices
Participate in software design activities by translating functional and non-functional requirements into scalable, maintainable, and secure software components and services
Contribute to the implementation of established software architecture patterns and system designs while gaining experience with scalability, reliability, security, and long-term maintainability considerations
Develop and maintain unit, functional, and integration tests to ensure software quality, reliability, and correct system behavior
Apply knowledge of data structures, algorithms, and software engineering fundamentals to develop efficient and scalable software solutions
Participate in code reviews and incorporate feedback to improve code quality, maintainability, and engineering practices
Contribute to APIs, microservices, distributed applications, and event-driven solutions.
Apply secure coding practices and security-by-design principles throughout the software development lifecycle
Collaborate with Product, QA, Architecture, Security, DevOps, and Operations teams to deliver software solutions that meet business and technical requirements
Support cloud-based applications and services while assisting with monitoring, troubleshooting, root cause analysis, and issue resolution
Assist in monitoring, analyzing, and optimizing application performance, scalability, and resource utilization to meet business and operational requirements
Contribute to CI/CD, automation, observability, reliability, performance, and operational excellence initiatives
Help implement operational readiness practices, including logging, monitoring, alerting, and system supportability considerations
Continuously learn and adopt modern software engineering technologies, tools, and practices
All About You
Bachelor's degree in computer science, engineering, information technology, or a related field, or equivalent practical experience in Software Development through a relevant internship, Co-Op, research, or professional business is preferred.
Strong understanding of programming fundamentals, data structures, algorithms, and object-oriented design concepts.
Knowledge of software design principles and the ability to develop maintainable, scalable, and reusable software solutions.
Understanding common architectural concepts and patterns such as layered architectures, microservices, event-driven systems, and distributed applications.
Working knowledge of Java, Golang, Kotlin, C#, or similar programming languages.
Familiarity with Spring Boot, Spring, Hibernate, or similar frameworks.
Exposure to JavaScript, Angular, or similar front-end technologies is a plus.
Understanding REST APIs, microservices, relational databases, SQL, and software testing practices.
Familiarity with unit testing frameworks and automated testing methodologies.
Familiarity with Git, CI/CD pipelines, cloud platforms, DevOps practices, and Agile software development methodologies.
Basic understanding of application performance, scalability, monitoring, and observability concepts.
Understanding troubleshooting methodologies, root cause analysis, and problem-solving techniques.
Basic understanding of secure coding principles, OWASP guidelines, and application security best practices.
Strong analytical thinking, problem-solving, communication, collaboration, and continuous learning 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.
Pay Ranges
O'Fallon, Missouri: $72,000 - $115,000 USDHow we rate this
Software Engineer I at Mastercard rates 0 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.
Little AI. AI is not part of the work.
- ●●●● Builds AI80 to 100
- ●●●○ Works on AI60 to 79
- ●●○○ Uses AI40 to 59
- ●○○○ Little AI0 to 39
Levels come from how often the tools, models and workflows of the role are named in the posting itself. Open the description and count.
Prepare for this job
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Skills and AI tools this role asks for
Questions you could be asked
- Tell me about a project where software engineering was part of your work. What did you do?
- Tell me about a project where java was part of your work. What did you do?
- Tell me about a project where distributed systems was part of your work. What did you do?
- Tell me about a project where cloud computing was part of your work. What did you do?
- Walk me through how you've used Apis in your day-to-day work.
Adapt your resume
- List these exact terms on your resume: Software Engineering, Java, Distributed Systems, Cloud Computing, and Apis. An applicant tracking system matches the wording, not the idea.
- Attach one line of real, concrete experience to at least one of them — a tool named with nothing behind it rarely survives a human read.
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