Senior Software Engineer

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?
Mastercard is a global technology company in the payments industry. Our mission is 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. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.
Overview
The Mastercard Builders' Enablement Team in Mastercard's Architecture & Technology team is looking for a Senior Software Engineer to drive our customer experience strategy forward by consistently innovating and problem-solving. The ideal candidate is passionate about the customer experience journey, highly motivated, intellectually curious, analytical, and possesses an entrepreneurial mindset. The successful candidate will be responsible for analyzing, designing, developing, and delivering high-quality software solutions. This role involves defining requirements for new applications and system customizations while ensuring adherence to established standards, processes, and best practices
Role
• Collaborate with Product and Business stakeholders to prioritize work and deliver against requirements.• Estimate, own, and deliver end-to-end tasks across design, development, testing, deployment, and documentation.• Automate build and operational processes to improve reliability and efficiency.• Drive technical trade-off discussions and guide design, code, and process decisions within the team.• Own service delivery, reporting status, managing risks, and improving operational metrics.• Lead service integrations with a focus on customer journey and experience.• Conduct product demos and acceptance discussions with Product Owners.• Develop and maintain a strong understanding of end-to-end architecture and system dependencies.• Promote and enforce technology standards, frameworks, and best practices, including code and test reviews.• Mentor team members, share knowledge across guilds/programs, and identify opportunities to improve processes and reduce waste.
All About You
• Proficient in writing secure, high-quality code in three or more languages (e.g., C/C++, C#, Java, JavaScript) with knowledge of OWASP, CWE, and secure coding best practices.• Strong understanding of mission-critical software design principles, including security, scalability, testing, operability, and service-oriented architectures.• Experience working with Windows and Linux internals and troubleshooting complex issues using core, heap, and thread dumps.• Hands-on experience with Git-based workflows, peer code reviews, and modern development practices such as TDD/BDD.• Solid knowledge of design patterns and API standards to build scalable, reusable services.• Experience designing effective test strategies aligned with the Test Pyramid to minimize defect leakage.• Familiarity with code quality and security scanning tools (e.g., Sonar, Checkmarx, Zally).• Ability to collaborate with cross-functional teams to estimate, prioritize, and deliver high-value features.• Experience defining non-functional requirements, including security, performance, and reliability.• Hands-on experience with CI/CD pipelines and release automation using industry-standard tools.• Data-driven mindset with the ability to track and improve delivery metrics.• Customer-focused approach, ensuring high availability (e.g., 99.95% uptime) and rapid incident mitigation.
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
New York City, New York: $138,000 - $221,000 USD