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

Overview:
Mastercard’s Mastercard Checkout Services team is seeking a Senior Software Engineer to join our team. This role involves collaborating closely with product and business stakeholders, owning delivery across the software development lifecycle, driving automation, integration efforts, and mentoring team members. You will contribute to building secure, scalable, and high-performing systems while enhancing the customer journey and operational excellence.
This is a hybrid position based in New York, NY requiring three days per week onsite.

Role:
•\tOwn the end-to-end delivery of complex features and services, including architecture, development, testing, deployment, and documentation.
•\tDesign and implement scalable, secure, and high-performance solutions, driving technical excellence across the stack.
•\tParticipate in team prioritization discussions with Product and Business stakeholders.
•\tAutomate the build, operation, and run aspects of software.
•\tLead code, design, and process trade-off discussions within the team as needed.
•\tReport status and manage risks within the primary application or service area.
•\tDrive integration of services with a focus on customer journey and experience.
•\tConduct demos and acceptance discussions with Product Owners.
•\tUnderstand operational and engineering challenges, and proactively work to improve experience and key performance metrics in the area of ownership.
•\tDevelop a comprehensive understanding of end-to-end technical architecture and dependent systems.
•\tChampion the adoption of technology standards and opinionated frameworks; review code, tests, and automation created by team members.
•\tMentor and support junior or less-experienced team members.
•\tIdentify opportunities to streamline processes and eliminate inefficiencies.
•\tShare and seek knowledge within the Guild or Program to promote reuse of patterns, libraries, and best practices that enhance productivity.

All About You:
•\tExtensive experience as a full-stack Software Engineer or Software Developer in a fast-paced, collaborative environment.
•\tProficiency in writing secure code using Java.
•\tFamiliarity with secure coding standards and vulnerability management.
•\tSolid understanding of foundational engineering principles for secure, reliable, and scalable systems.
•\tExperience working with operating system internals (Windows, Linux) to develop efficient code.
•\tStrong debugging and troubleshooting skills, including analyzing core/heap/thread dumps.
•\tFamiliarity with Git-based workflows and peer review processes.
•\tExperience with Test-Driven Development (TDD) and Behavior-Driven Development (BDD).
•\tUnderstanding of advanced design patterns (e.g., MVC, API Gateway, Dependency Injection).
•\tExperience designing, building, and cataloging APIs with a focus on reusability and commercialization.
•\tAbility to apply the Test Pyramid concept: unit, contract, and integration testing.
•\tExperience using code quality tools (e.g., Sonar, Zally, Checkmarx) to maintain high standards.
•\tAbility to track and improve delivery metrics (e.g., velocity, lead time, defect leakage).
•\tSkilled in documenting requirements and ensuring definition-of-done is met.
•\tExperience in regression, performance, deployment, and release testing.
•\tAbility to conduct product demos and manage product acceptance processes.
•\tStrong understanding of customer journeys and driving high availability and performance (e.g., 99.95% uptime).
•\tExperience working in an Agile development environment.
•\tExcellent verbal and written communication skills, with the ability to articulate complex ideas clearly and concisely to both technical and non-technical stakeholders.
•\tStrong analytical and problem-solving abilities, with a focus on improving processes to accelerate delivery, foster innovation, reduce costs, and improve quality.
•\tBachelor’s degree in Computer Science, Engineering, or a related field. Equivalent practical experience will be considered.

This role is not eligible for Mastercard’s work authorization sponsorship. As such, candidates must be eligible to work in the United States, now as well as in the future, without employer sponsorship.

#LI-NF1

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 reasonable_accommodation@mastercard.com 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 based on location, experience and other qualifications for the role and may be eligible for an annual bonus or commissions depending on the role. 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 new parent leave, up to 20 paid days bereavement leave), 10 annual paid sick days, 10 or more annual paid vacation days based on level, 5 personal days, 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, gender-inclusive benefits and many more.

Pay Ranges

New York City, New York: $138,000 - $221,000 USD