Own the architecture, development, testing, deployment, and operation of high-performance Java services for Mastercard’s distributed fraud decisioning and caching platform. Design scalable APIs and resilient systems, troubleshoot complex multi-tier issues, coordinate releases, support on-call operations, lead incident remediation, review code, improve automation and performance, collaborate with product stakeholders, and mentor engineers.
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 (API) - Fraud Platform
SENIOR SOFTWARE ENGINEER (JAVA) - DATA CACHING / DISTRIBUTED SYSTEMS
Location: Dublin, Ireland
OVERVIEW
We are hiring a Senior Java Software Engineer to join a Dublin-based engineering team working on Mastercard's real-time decisioning platform. The team designs, builds and operates a high-performance, distributed, in-memory data caching layer that supports mission-critical transaction processing at global scale, with a strong focus on low latency, high availability and resiliency.
This is a hands-on senior role for an engineer who enjoys working close to complex distributed systems, owning features end-to-end, and helping shape technical direction within a collaborative Agile team.
• Want to work on industry-leading, mission-critical distributed systems at global scale?• Motivated by solving complex performance, resiliency and data-consistency problems?• Keen to take end-to-end ownership and mentor others in a high-trust team?
ROLE & KEY RESPONSIBILITIES
As a Senior Software Engineer, you will act as a technical owner and leader within the team:
• End-to-end delivery - Own complex features and services across the full software development lifecycle: architecture, design, development, testing, deployment, rollback planning and documentation.• Design & innovation - Design and implement high-performance, scalable and secure Java capabilities; apply advanced design patterns and API standards; produce high- and low-level design documentation to a professional standard.• Independent problem-solving - Drive solutions for complex problems; debug and troubleshoot across multi-tiered systems, including core, heap and thread-dump analysis; design resilient solutions.• Technical leadership & influence - Lead code, design and process trade-off discussions; drive adoption of coding standards and frameworks; review code, tests and automation produced by other team members.• Release & delivery coordination - Support coordinated releases across a follow-the-sun, multi-region engineering model, including scope tracking, cross-team sign-offs and release execution.• Operational excellence - Participate in on-call support; lead incident management, root-cause analysis and remediation; proactively improve performance and stability metrics.• Stakeholder engagement - Contribute to prioritisation with Product and Business stakeholders; lead demos and acceptance discussions with Product Owners; report status and manage risks in owned service areas.• Mentoring & knowledge sharing - Mentor less-experienced engineers, deliver knowledge-transfer and brown-bag sessions, and help build shared understanding across the team.• Continuous improvement - Identify inefficiencies and drive automation of build, operate and run activities; research and evaluate emerging technologies and frameworks.
REQUIRED SKILLS & EXPERIENCE• Strong proficiency with modern Java (JDK 17 or later); distributed systems and multi-threading experience.• Experience with Spring, Spring Boot, Hibernate, RESTful APIs, JSON; application servers (e.g. JBoss/Tomcat); Shell scripting.• Experience with distributed caching or in-memory data grid technologies (e.g. Apache Geode, Hazelcast, Redis, Coherence) is highly desirable.• Solid experience with Linux, SQL and message-queuing systems, and with design patterns.• Expertise in JUnit or equivalent automated testing frameworks; designing test plans across unit, regression, performance and integration.• CI/CD proficiency - tools such as Jenkins and Maven; source control in a multi-developer, distributed environment.• Familiarity with observability and monitoring tooling for alerting, dashboards and performance analysis.• Understanding of secure development practices (secure-by-design) and awareness of PCI-DSS considerations for handling payment card data.• Passionate about Agile ways of working (SAFe / SCRUM), code quality and engineering best practices.
OTHER ATTRIBUTES• Excellent written and verbal communication and strong cross-team, cross-geography collaboration.• Shows initiative, takes on challenging opportunities, and demonstrates end-to-end ownership.• Driven, highly motivated, strong team player. Fluency in English.
EDUCATION
Bachelor's degree in Computer Science, Information Technology or equivalent work experience.
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:
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 (API) - Fraud Platform
SENIOR SOFTWARE ENGINEER (JAVA) - DATA CACHING / DISTRIBUTED SYSTEMS
Location: Dublin, Ireland
OVERVIEW
We are hiring a Senior Java Software Engineer to join a Dublin-based engineering team working on Mastercard's real-time decisioning platform. The team designs, builds and operates a high-performance, distributed, in-memory data caching layer that supports mission-critical transaction processing at global scale, with a strong focus on low latency, high availability and resiliency.
This is a hands-on senior role for an engineer who enjoys working close to complex distributed systems, owning features end-to-end, and helping shape technical direction within a collaborative Agile team.
• Want to work on industry-leading, mission-critical distributed systems at global scale?• Motivated by solving complex performance, resiliency and data-consistency problems?• Keen to take end-to-end ownership and mentor others in a high-trust team?
ROLE & KEY RESPONSIBILITIES
As a Senior Software Engineer, you will act as a technical owner and leader within the team:
• End-to-end delivery - Own complex features and services across the full software development lifecycle: architecture, design, development, testing, deployment, rollback planning and documentation.• Design & innovation - Design and implement high-performance, scalable and secure Java capabilities; apply advanced design patterns and API standards; produce high- and low-level design documentation to a professional standard.• Independent problem-solving - Drive solutions for complex problems; debug and troubleshoot across multi-tiered systems, including core, heap and thread-dump analysis; design resilient solutions.• Technical leadership & influence - Lead code, design and process trade-off discussions; drive adoption of coding standards and frameworks; review code, tests and automation produced by other team members.• Release & delivery coordination - Support coordinated releases across a follow-the-sun, multi-region engineering model, including scope tracking, cross-team sign-offs and release execution.• Operational excellence - Participate in on-call support; lead incident management, root-cause analysis and remediation; proactively improve performance and stability metrics.• Stakeholder engagement - Contribute to prioritisation with Product and Business stakeholders; lead demos and acceptance discussions with Product Owners; report status and manage risks in owned service areas.• Mentoring & knowledge sharing - Mentor less-experienced engineers, deliver knowledge-transfer and brown-bag sessions, and help build shared understanding across the team.• Continuous improvement - Identify inefficiencies and drive automation of build, operate and run activities; research and evaluate emerging technologies and frameworks.
REQUIRED SKILLS & EXPERIENCE• Strong proficiency with modern Java (JDK 17 or later); distributed systems and multi-threading experience.• Experience with Spring, Spring Boot, Hibernate, RESTful APIs, JSON; application servers (e.g. JBoss/Tomcat); Shell scripting.• Experience with distributed caching or in-memory data grid technologies (e.g. Apache Geode, Hazelcast, Redis, Coherence) is highly desirable.• Solid experience with Linux, SQL and message-queuing systems, and with design patterns.• Expertise in JUnit or equivalent automated testing frameworks; designing test plans across unit, regression, performance and integration.• CI/CD proficiency - tools such as Jenkins and Maven; source control in a multi-developer, distributed environment.• Familiarity with observability and monitoring tooling for alerting, dashboards and performance analysis.• Understanding of secure development practices (secure-by-design) and awareness of PCI-DSS considerations for handling payment card data.• Passionate about Agile ways of working (SAFe / SCRUM), code quality and engineering best practices.
OTHER ATTRIBUTES• Excellent written and verbal communication and strong cross-team, cross-geography collaboration.• Shows initiative, takes on challenging opportunities, and demonstrates end-to-end ownership.• Driven, highly motivated, strong team player. Fluency in English.
EDUCATION
Bachelor's degree in Computer Science, Information Technology or equivalent work experience.
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.
Mastercard Chicago, Illinois, USA Office
8755 W Higgins Rd, Chicago, IL, United States
Similar Jobs at Mastercard
Blockchain • Fintech • Payments • Consulting • Cryptocurrency • Cybersecurity • Quantum Computing
Develop and maintain distributed payment platform applications using Java, Spring, and Hibernate. Design, test, deploy, and improve performant APIs and cloud-native solutions. Manage project priorities and deliverables while participating in agile ceremonies and collaborating with geographically distributed teams. Apply AI-driven solutions to improve customer experience, operational efficiency, and software development processes. Ensure product quality, security, responsiveness, and reliability.
Top Skills:
AWSCloud FoundryHibernateJavaJSONRestful ApisSoapSpring
Blockchain • Fintech • Payments • Consulting • Cryptocurrency • Cybersecurity • Quantum Computing
Develop and maintain distributed payment platform applications for Mastercard’s VCN, Spend Controls & Alerts team. Responsibilities include designing, coding, testing, deploying, and improving performant software; managing project deliverables; participating in Agile ceremonies; collaborating across geographically distributed teams; and applying AI-driven solutions to improve customer experience, operational efficiency, and development processes.
Top Skills:
AgileAWSCloud FoundryHibernateJavaJSONRestful ApisSoapSpring
Blockchain • Fintech • Payments • Consulting • Cryptocurrency • Cybersecurity • Quantum Computing
Leads platform engineering and automation for mission-critical payment systems. Designs and maintains Ansible, Python, and scripting solutions; builds dashboards for asset inventory, health, capacity, and lifecycle visibility; modernizes legacy operational workflows; establishes automation, monitoring, and configuration-management standards; analyzes platform data for optimization and modernization; and provides technical leadership, mentorship, and guidance on secure, highly available infrastructure.
Top Skills:
AnsibleAutomationConfiguration ManagementMonitoringPower BIPythonScripting
What you need to know about the Chicago Tech Scene
With vibrant neighborhoods, great food and more affordable housing than either coast, Chicago might be the most liveable major tech hub. It is the birthplace of modern commodities and futures trading, a national hub for logistics and commerce, and home to the American Medical Association and the American Bar Association. This diverse blend of industry influences has helped Chicago emerge as a major player in verticals like fintech, biotechnology, legal tech, e-commerce and logistics technology. It’s also a major hiring center for tech companies on both coasts.
Key Facts About Chicago Tech
- Number of Tech Workers: 245,800; 5.2% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: McDonald’s, John Deere, Boeing, Morningstar
- Key Industries: Artificial intelligence, biotechnology, fintech, software, logistics technology
- Funding Landscape: $2.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Pritzker Group Venture Capital, Arch Venture Partners, MATH Venture Partners, Jump Capital, Hyde Park Venture Partners
- Research Centers and Universities: Northwestern University, University of Chicago, University of Illinois Urbana-Champaign, Illinois Institute of Technology, Argonne National Laboratory, Fermi National Accelerator Laboratory
