Senior Software Engineer (API) – Fraud Platform
Mastercard · Dublin 18
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- Company
- Mastercard
- Location
- Dublin 18
- Employment type
- Full-time
- Posted
- August 21, 2026
About this job
Job Title: Senior Software Engineer (API) – Fraud Platform Overview: 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.…
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