Senior Full-Stack Engineer - C# / Java / React

Job Title : Senior Full-Stack Engineer - C# / Java / React

Overview

Senior Full-Stack Engineer – Open Finance

Location : Copenhagen, Gdańsk or Dublin

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 payment 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.

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

Responsibilities

• Plan, design, and develop full‑stack solutions that meet business requirements while adhering to Mastercard’s standards, processes, and best practices.
• Collaborate with UI / UX designers to implement responsive, accessible user interfaces with React.
• Ensure front‑end applications meet WCAG accessibility guidelines, deliver great performance, and are optimized for multiple devices.
• Build and maintain scalable backend services and APIs, integrating with Mastercard’s Open Finance ecosystem.
• Ensure high code quality with unit / integration testing, peer reviews, and continuous integration.
• Contribute to the full software development life cycle, from requirements gathering to release and ongoing support.
• Troubleshoot, debug, and resolve production issues, ensuring service reliability and performance.
• Mentor junior engineers and promote knowledge sharing across the team.
• Partner with product owners and stakeholders to prioritize features, communicate progress, and manage trade‑offs.
• Stay current with industry trends, frameworks, and best practices in both frontend and backend technologies.

Qualifications

Corporate Security Responsibility

Mastercard is an inclusive equal‑opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disability, veteran status, or any other characteristic protected by law. If you require accommodations or assistance to complete the online application process or during the recruitment process, please contact and identify the type of accommodation or assistance you are requesting. The Reasonable Accommodations team will respond to your email promptly.

Microsoft is an inclusive equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disability, veteran status, or any other characteristic protected by law.

#J-18808-Ljbffr