Software Engineer I

Mastercard Inc.; O’Fallon (MO); Vor Ort; USD 72.000 - 115.000; Vollzeit

Benefits dieser Stelle

Medical insurance

401k match

Paid time off

Tuition reimbursement

Holiday pay

Zusammenfassung

Mastercard in O'Fallon, Missouri is seeking a Software Engineer I to develop, test, and maintain secure, scalable software. You’ll work with cross-functional teams and gain expertise in cloud technologies, DevOps practices, and modern architectures.

The role focuses on translating business needs into reliable software, writing clean code, and contributing to APIs and microservices while learning architectural principles for scalable systems.

Qualifikationen

• Bachelor's degree in computer science, engineering, IT, or equivalent.
• Strong fundamentals in data structures, algorithms, and OO design.
• Experience with Java, Golang, Kotlin, or similar languages.
• Familiarity with Spring Boot, Spring, Hibernate, and React/Angular.
• Understanding REST APIs, microservices, and distributed systems.
• Experience with Git, CI/CD, cloud platforms, and Agile methods.
• Exposure to AWS, Docker, Kubernetes, Kafka, and observability tools.

Aufgaben

• Develop, test, maintain, and support software applications and services with guidance.
• Write clean, secure code honoring standards and best practices.
• Translate requirements into scalable software components and services.
• Implement tests and contribute to CI/CD, observability, and reliability.
• Collaborate with cross-functional teams to meet business needs.
• Contribute to APIs, microservices, and event-driven architectures.

Kenntnisse

Programming fundamentals

Data structures

Object-oriented design

Java

Golang

Kotlin

Spring Boot

React

REST APIs

Unit testing

Git/CI-CD

Cloud platforms

Agile methodology

Docker

Kubernetes

Security best practices

Ausbildung

Bachelor's degree in CS/Engineering

Tools

Docker

Kubernetes

Kafka

NATS.io

Splunk

Dynatrace

AWS

PCF

Jobbeschreibung

Title and Summary Software Engineer I

Who is Mastercard?

We work to connect and power an inclusive, digital economy that benefits everyone, everywhere, by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships, and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion for all employees that respect their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation, and delivers better business results.

About the Role

We are looking for a motivated Software Engineer to develop, test, maintain, and support secure, reliable, high-performing, and scalable software applications. You will work alongside experienced engineers and cross-functional teams while building expertise in modern application development, software design, cloud technologies, automated testing, performance optimization, DevOps, and engineering best practices. In this role, you will contribute throughout the software development lifecycle, helping translate business and technical requirements into well-designed software solutions while learning architectural principles that support scalable, maintainable, and secure systems.

Role

• 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 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 experience in Java, Golang, Kotlin, or similar programming languages.
• Familiarity with Spring Boot, Spring, Hibernate, or similar frameworks.
• Exposure to React, Angular, or similar front-end technologies.
• 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.
• Exposure to AWS, PCF, Docker, Kubernetes, Kafka, NATS.io, Splunk, Dynatrace, or similar technologies is a plus.
• 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.
• Curiosity in AI and large language models and their responsible use in software engineering.
• Strong analytical thinking, problem-solving, communication, collaboration, and continuous learning skills.

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 (Full Time)

• 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 (Interns)

• 56 hours of Paid Sick and Safe Time;
• jury duty leave;
• and on-site fitness facilities in some locations.

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 USD

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.

THIS POSTING RELECTS ONE OR MORE CURRENT VACANCIES ON OUR TEAM, AND MASTERCARD INTENDS TO FILL THIS POSITION BY 01/03/2027. If the fill date has passed, Mastercard intends to fill this position as soon as possible.

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.