Mastercard Jobs

Job Information

MasterCard Senior Java Developer in O'Fallon, Missouri

Our Purpose

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 respects 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.

Job Title

Senior Java Developer

Software Engineer – All Experience Levels

Our Mission: To Build a Connected and Inclusive Economy

We are looking for Software Engineers who want to design, code, test, and future-proof solutions that shape a better tomorrow. We’re hiring across all levels, from entry-level engineers to leadership roles. If you’re a change maker who wants to develop tech with social impact that leverages the data and insights from billions of customers across the globe, let’s create Priceless possibilities together.

As a Software Engineer at Mastercard, you will deliver products and solutions with speed and agility. You will have opportunities to grow your network of mentors and coaches, diversify your tech stack and soft skills, and build a career that challenges you to improve every day.

If the idea of developing high performance, highly scalable software solutions for one of the world’s top brands sounds appealing to you, please apply! Our teams create products in the areas of Payment Processing, Open Banking, Crypto & Digital Currencies, Cyber Security, and Financial Inclusion.


All Mastercard Software Engineers must have the ability to write secure and high-performance code in at least one of the following languages: Java, C, C++, Go, or Perl.

Additionally, we are looking for varying levels of experience and knowledge in:

• Prior exposure to Spring, Microservices and/or REST Webservices

• Secure coding standards (e.g. OWASP, CWE, and/or SEI CERT)

• Understanding the basic principles of software architecture / event-driven architecture, automation, software development, cloud platforms, and/or testing

• People management, if seeking a leadership role at the Manager level and up

• Engineering principles used in building and running mission-critical software (i.e. security, customer experience, testing, and/or operability)

• Understanding how to prioritize and accurately estimate efforts required for new software builds


And of course, we expect all our employees to share in our Mastercard Values:

• You have a relentless focus on the customer

• You know how to simplify processes and do the work to uncomplicate

• You are an inclusive colleague that welcomes new perspectives and strives to create a culture of belonging

• You own tasks end-to-end and empower your team members to bring their A game every day

• You are a thoughtful risk-taker and bring innovative ideas to the table


Our St. Louis Tech Hub is home to the North American Operations Command Center, Fusion Center, Data Center, and several other critical business functions. As our largest global tech hub, the St. Louis campus has more than 4,000 residents throughout our environmentally friendly campus. If you prefer working from the office, take advantage of our on-site café, fitness center, and health center to keep your health and wellbeing top of mind.

At Mastercard, we support our Software Engineers with competitive compensation, generous benefit programs, and flexibility to work away from the office.

We are hiring across all levels – from entry-level engineers to leadership roles – through the application linked below.

Apply today to unlock your potential and Start Something Priceless!

COVID-19 Considerations

We value the safety of each member of our community because we know we’re all in this together. In many locations, which may change over time, we’ve implemented a virtual hiring process and continue to interview candidates by video or phone. In addition, in some locations, only individuals who have been fully vaccinated will be permitted inside Mastercard offices until further notice.

In the US, Mastercard is a government contractor, which may legally require most Mastercard employees to be vaccinated unless a verified approved medical or religious exemption is granted. Further, we are currently making every effort towards having employees return to work in the office 2 days per week, if that makes sense for their team. Everyone must be vaccinated to enter Mastercard offices at this time. Therefore, we expect all candidates to be vaccinated or to be approved for a medical or religious accommodation prior to commencing work at Mastercard.

In the US, Mastercard is an inclusive Equal Employment 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. If you require accommodations or assistance to complete the online application process, please contact 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.

Requisition ID: R-156628