Job Description
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
Overview
The Transaction Switching team is looking for a Software Engineer II to help drive our software delivery strategy forward by building secure reliable and scalable cloud-native solutions. The ideal candidate is passionate about software engineering highly motivated intellectually curious collaborative and committed to delivering high-quality services that support customer and business needs.
Role
In this position you will:• Analyze design develop and deliver software solutions with an emphasis on cloud-native microservices• Partner with development teams product management and scrum masters to clarify requirements solve problems and deliver secure software solutions • Write maintainable and efficient code to build and enhance applications services and REST APIs• Apply appropriate data structures and design principles to ensure performance scalability and maintainability• Participate in agile scrum ceremonies contribute to story estimation and follow team working agreements coding standards and engineering best practices• Participate in code reviews code scanning unit testing and other development practices to deliver high-quality artifacts to production• Contribute to test automation strategy and help simplify or automate aspects of software development and delivery• Troubleshoot debug and resolve technical issues using a structured and analytical approach• Participate in a blameless postmortem culture by helping identify root causes of incidents and applying learnings to improve system reliability
All About You
The ideal candidate for this position should:• Have a Bachelor's degree in Computer Science or equivalent education or experience. • Demonstrate intermediate to advanced knowledge of Java Spring Boot and REST API development• Understand relational database concepts and have experience working with databases such as Oracle or PostgreSQL• Be familiar with CI/CD concepts unit testing test-driven development and test automation practices• Be committed to building secure reliable scalable and maintainable software using established standards and best practices• Be comfortable working in an agile scrum environment and collaborating with engineers product managers scrum masters and other stakeholders• Demonstrate the ability to troubleshoot technical issues and optimize system performance through structured problem-solving• Be a continuous learner who actively shares software engineering practices and contributes to team or engineering community initiatives
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. 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: $92000 - $147000 USD
Skills Required
- Bachelor's degree in Computer Science or equivalent education or experience
- Intermediate to advanced knowledge of Java Spring Boot and REST API development
- Experience with relational databases such as Oracle or PostgreSQL
- Familiarity with CI/CD concepts unit testing and test automation practices
- Ability to troubleshoot technical issues and optimize system performance
What the Team is Saying


Mastercard Compensation & Benefits Highlights
- Retirement Support—Retirement programs include an employer match up to 10% (401k or local equivalent) consistently highlighted in careers materials. Feedback suggests this is a standout component of total rewards.
- Parental & Family Support—A global minimum of 16 weeks paid new‑parent leave is offered for birth adoption or foster placements with financial assistance for fertility adoption and surrogacy where allowed. Feedback suggests these provisions are robust relative to many large employers.
- Flexible Benefits—Flexibility features include hybrid work a four‑week “work from elsewhere” program quarterly meeting‑free days and five paid volunteer days. Feedback suggests these options support work/life balance across many roles.
Mastercard Insights
What We Do
Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers we’re building a resilient 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.
Why Work With Us
We live the Mastercard Way: creating value in the communities we touch growing together through the opportunities we see and moving fast to innovate and scale. Our collaborative culture and our passionate people are the key to what we do driving meaningful change as one team and connecting everyone to priceless possibilities.
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Mastercard Teams
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Hybrid Workspace
Employees engage in a combination of remote and on-site work.
In our ongoing workplace evolution we’ve introduced hybrid work Work-From-Elsewhere Weeks and Meeting-Free Days.










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Date Posted
05/21/2026
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