The Senior Software Engineer will design build and maintain resilient Java Spring-based services for secure data movement ensuring high availability and engineering best practices while mentoring junior engineers.

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
Senior Software Engineer
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 seeking a Senior Software Engineer to join our File Transfer platform team responsible for building and operating mission-critical highly available services that support secure large-scale data movement across global environments. This role is hands-on and requires deep expertise in Java and Spring-based platforms strong engineering ownership and the ability to collaborate effectively with distributed teams in an agile delivery model.
Role
Design build and maintain highly available resilient Java Spring-based services supporting enterprise-grade file transfer workloads.
Contribute to the end-to-end lifecycle of platform capabilities from design and development through production support and continuous improvement.
Build systems with a strong focus on reliability scalability security and performance suitable for mission-critical environments.
Partner with global engineering SRE product and operations teams to deliver features and resolve complex production issues.
Drive engineering best practices including code quality automated testing CI/CD and operational readiness.
Participate actively in agile ceremonies (sprint planning reviews retrospectives) and contribute to continuous delivery.
Support platform observability incident analysis and post-incident improvements to reduce operational risk.
Mentor junior engineers and contribute to a culture of technical excellence and ownership.
All About You
Strong written and verbal communication skills with the ability to clearly articulate technical concepts and collaborate across functions.
Hands-on experience building backend platforms using Java and Spring (Spring Boot preferred).
Knowledge working with event driven platforms such as Apache KAFKA RabbitMQ NATS or other equivalents.
Experience working with Cloud Services such as AWS GCP Azure or PCF.
Proven experience developing and operating mission-critical highly available systems in production environments.
Strong understanding of distributed systems including scalability fault tolerance concurrency and performance tuning.
Experience working with global geographically distributed teams.
Solid experience working in an agile (Scrum / SAFe) environment.
Demonstrate a sense of ownership and accountability for delivered software and operational outcomes.
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: $115000 - $184000 USD