Software Engineer II (Java/Spring)

Engg; Dún Laoghaire-Rathdown; On-site; EUR 70,000 - 100,000; Full time

Job summary

Mastercard seeks a Software Engineer II to design, develop and maintain backend services and APIs. You will build secure, scalable software and support RESTful interfaces across internal platforms.

Collaborate with product owners, architects, and data teams to translate requirements into technical solutions, participate in reviews and releases, and uphold security and compliance standards throughout the lifecycle.

Qualifications

• 3+ years hands-on backend software engineering experience.
• Strong Java or Python programming skills.
• Experience building and consuming RESTful APIs with microservices.
• Familiarity with SDLC, CI/CD, testing, and production support.
• Experience with SQL and data stores; Git and Unix/Linux basics.
• Understanding secure coding practices and data protection.

Responsibilities

• Design, develop, test, and maintain backend services, APIs, and integration components.
• Build secure, scalable software solutions using modern engineering practices.
• Develop and support RESTful APIs and service-to-service integrations.
• Collaborate with cross-functional teams to translate requirements into solutions.
• Participate in design discussions, code reviews, testing, and releases.
• Apply secure coding, logging, monitoring, and operational readiness practices.
• Troubleshoot production issues and perform root cause analysis.
• Contribute to automation, CI/CD pipelines and process improvements.
• Follow Mastercard security, privacy, and compliance standards.

Skills

3+ years experience

Java

Python

RESTful APIs

Microservices

SQL

Git

Unix/Linux

CI/CD

Debugging

Security

Tools

Git

Job description

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

Software Engineer II (Java/Spring) Job Overview: As a Software Engineer II, you will:

• Design, develop, test, and maintain backend services, APIs, and integration components that support business and technology capabilities.
• Build secure, scalable, and maintainable software solutions using modern engineering practices.
• Develop and support RESTful APIs, service-to-service integrations, and data exchange patterns across internal platforms.
• Collaborate with product owners, architects, software engineers, data engineers, and data scientists to translate requirements into technical solutions.
• Participate in design discussions, code reviews, testing, and release activities to ensure high-quality software delivery.
• Apply secure coding, logging, monitoring, and operational readiness practices throughout the development lifecycle.
• Troubleshoot production issues, perform root cause analysis, and contribute to long-term improvements in reliability and supportability.
• Contribute to automation, CI/CD pipelines, and engineering process improvements that reduce manual effort and improve delivery speed.
• Follow Mastercard technology, security, privacy, and compliance standards in the design and implementation of solutions.

Essential Skills & Experience

• 3+ years of hands‑on software engineering experience building backend services, APIs, or integration solutions.
• Strong programming experience in Java, Python, or a similar modern programming language.
• Experience developing and consuming RESTful APIs and working with service-based or microservices‑style architectures.
• Good understanding of software development lifecycle practices, including design, coding, testing, code review, CI/CD, and production support.
• Experience with SQL and relational or analytical data stores.
• Familiarity with Git, Unix/Linux environments, shell scripting, and automated build/deployment pipelines.
• Strong debugging, troubleshooting, and problem‑solving skills, including the ability to independently investigate and resolve technical issues.
• Understanding of secure coding practices, authentication/authorization patterns, data protection, and operational controls.
• Excellent communication skills, with a collaborative approach to working across engineering, data science, product, and architecture teams.

Preferred Qualifications

• Experience with Java/Spring Boot or similar backend application frameworks.
• Experience with API gateways, integration platforms, event‑driven patterns, messaging, or batch/streaming integration approaches.
• Exposure to AI/ML‑enabled platforms, model integration patterns, or data‑driven applications.
• Experience with observability tools, logging, monitoring, alerting, and production support practices.
• Exposure to Agile delivery methods and working in cross‑functional delivery teams.
• Ability to work across multiple priorities while maintaining a strong sense of ownership and delivery accountability.
• Proactive, self‑motivated, and comfortable operating in a fast‑paced technology environment.

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.
• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

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.