Senior API Engineer for Real-Time Fraud Platform

Mastercard; Bray (OK); Hybrid; USD 104,000 - 151,000; Full time

Job summary

Mastercard in Dublin is seeking a Senior Java Software Engineer to join our real-time decisioning platform. You will own complex features across the full SDLC, from architecture to deployment, delivering high-performance, low-latency services in a distributed environment.

You will mentor teammates, define design patterns, and collaborate with Product and Security teams to ensure robust, scalable solutions that meet PCI-DSS considerations and security best practices.

Qualifications

• Bachelor's degree in Computer Science or related field.
• Strong Java skills with experience in distributed systems.
• Proficiency in RESTful APIs, JSON, and modern frameworks.
• Experience with Agile/SAFe environments and code quality practices.

Responsibilities

• Own complex features and services end-to-end across the full software lifecycle.
• Design high-performance, scalable, and secure Java capabilities for a distributed platform.
• Mentor teammates, drive coding standards and architectural direction.
• Lead release coordination and ensure robust testing and deployment practices.
• Collaborate with Product, Security and Ops to improve resiliency and observability.
• Participate in incident response, root-cause analysis and performance optimization.

Skills

Java proficiency

Distributed systems

RESTful APIs

Agile / SAFe

Education

Bachelor's degree in Computer Science or related field

Tools

Spring Boot

Hibernate

Jenkins

Maven

Redis

Job description

Mastercard in Dublin is seeking a Senior Java Software Engineer to join our real-time decisioning platform. You will own complex features across the full SDLC, from architecture to deployment, delivering high-performance, low-latency services in a distributed environment.

You will mentor teammates, define design patterns, and collaborate with Product and Security teams to ensure robust, scalable solutions that meet PCI-DSS considerations and security best practices.