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.

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.

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.

• 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

• 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 Postgre
  
  SQL).
• Experience in AI coding assistants tools like Git Hub 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…