Senior Software Engineer

Mastercard•Salt Lake City, UT

About The Position

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 As a Senior Full‑Stack Engineer, you will design, build, and deliver cutting‑edge Open Finance solutions that power Mastercard’s next generation of data products. You’ll work across the entire technology stack—from highly available backend services built in Java to engaging front‑end experiences using React—partnering closely with designers, product managers, and architects to bring ideas to life. You will contribute to Connect, the frontend component of our Open Finance applications, helping to drive innovative solutions in pursuit of a world beyond cash. This role requires strong backend engineering expertise (Java), robust frontend development skills (React), and the ability to collaborate across disciplines to deliver secure, scalable, and accessible software aligned to Mastercard’s highest standards.

Requirements

5+ years of software engineering experience across backend and frontend development.
Strong hands-on experience in backend development with applicable JAVA technologies (Core JAVA, Spring Integration, Spring Boot, REST/SOAP web services)
Solid experience building RESTful APIs, microservices, and working in cloud environments (AWS, GCP, or Azure).
Has ability to write secure code in JavaScript and Node.js
A deep understanding of methodologies and design patterns for JavaScript, HTML5, complex CSS and responsive design
Strong hands‑on experience in developing front end applications in React and frameworks RxJS
Proven experience working with SQL Databases (preferable PostgreSQL).
Experience in AI coding assistants tools like GitHub Copilot, Cursor, Claude Code, or Codex for code generation, refactoring, and debugging.
Experience in AI prompt engineering to design, test, and refine prompts to improve the quality, accuracy, and relevance of AI-generated code.
Experience with containerized applications (Docker and Kubernetes)
Familiar with secure coding standards (e.g., OWASP, CWE, SEI CERT) and vulnerability management
Able to perform debugging and troubleshooting to analyze core, heap, thread dumps and remove coding errors
Understands and implements standard branching (e.g., Gitflow) and peer review practices
Has skills in test driven and behavior driven development (TDD and BDD) to build just enough code and collaborate on the desired functionality
Understands use cases for advanced design patterns (e.g., service-to-worker, MVC, API gateway, intercepting filter, dependency injection, lazy loading, all from the gang of four) to implement efficient code
Understands and implements Application Programming Interface (API) standards and cataloging to drive API/service adoption and commercialization
Has skills to author test code with lots of smaller tests followed by few contract tests at service level and fewer journey tests at the integration level (Test Pyramid concept)
Apply tools (e.g., Sonar, Zally, Checkmarx ) and techniques to scan and measure code quality and anti-patterns as part of development activity
Has skills to collaborate with team and business stakeholders to estimate requirements (e.g., story pointing) and prioritize based on business value
Has skills to elaborate and estimate non-functional requirements, including security (e.g., data protection, authentication, authorization), regulatory, and performance (SLAs, throughput, transactions per second)
Has skills to orchestrate release workflows and pipelines, and apply standardized pipelines via APIs to achieve CI and CD using industry standard tools (e.g., Gitlab, Jenkins, AWS/Azure pipelines, others).
Has skills to understand, report, and optimize delivery metrics to continuously improve upon them (e.g., velocity, throughput, lead time, defect leakage, burndown)
Has skills to document and drive definition-of-done for requirements to meet both business and operational needs
Understands how to build robust tests to minimize defect leakage by performing regression, performance, deployment verification, and release testing
Has skills to conduct product demos and co-ordinate with product owners to drive product acceptance signoffs
Has skills to Understands customer journeys and ensure a Mastercard good experience by continuously reducing Mean time to mitigate (MTTM) for incidents and ensuring high availability (99.95% as a starting point)
Bachelor's Degree in Computer Science or Computer Engineering or Information Technology, or relevant experience in software development

Responsibilities

Participate in team prioritization discussions with Product/Business stakeholders
Estimate and own delivery tasks (design, dev, test, deployment, configuration, documentation) to meet the business requirements
Automate build, operate, and run aspects of software
Drive code/design/process trade-off discussions within their team when required
Report status and manage risks within their primary application/service
Drive integration of services focusing on customer journey and experience
Perform demos/acceptance discussions in interacting with Product owners
Understands operational and engineering experience, actively works to improve experience and metrics in ownership area
Develop complete understanding of end-to-end technical architecture and dependency systems
Drive adoption of technology standards and opinionated frameworks, and review coding, test, and automation work of team members
Mentor and guide new and less-experienced team members
Identify opportunities to improve an overall process and trim waste
Share and seek knowledge within their Guild/Program to drive reuse of patterns/libraries/practices and enhance productivity

Benefits

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

Stand Out From the Crowd

Upload your resume and get instant feedback on how well it matches this job.

Upload and Match Resume